biocompatibility of dental casting alloys



Dental Casting Alloys Dental Casting Alloys Новинка

Dental Casting Alloys

Nowadays, the use of pure metals is quite limited in dentistry because they appear to be soft and may tend to corrode rapidly.To optimize properties, most of the metals commonly used in dental applications are mixtures of two or more metallic elements or one or more metals and/or non-metals. Although such mixtures can be produced in a number of ways. The use of these cast metals has decreased because of increased consumer demand for aesthetics over durability. Knowledge of the structure and properties of cast metals and alloys is essential to ensure proper handling of these materials. Thus this book is a compilation of all dental casting alloys and their applications in clinical dentistry.
Biocompatibility of dental casting alloys Biocompatibility of dental casting alloys Новинка

Biocompatibility of dental casting alloys

With the advancements in technology more & more artificial metals, alloys and other implantable and non implantable materials are being used in the fields of medicine and dentistry. These materials directly or indirectly come in contact with skin, epithelium, connective tissue or bone. Given this long term intimate contact with vital tissues, it is paramount that alloy biocompatibility be investigated and understood. Moreover the oral and maxillofacial environment is complex and varied with different requirement and biocompatibility issues depending on the specific use. Unfortunately in our educational curriculums these important issues are not thoroughly understood, investigated or taught. In this book authors have made an utmost effort to make readers get a fair idea about these important issues and discuss the recent researches in this field. This will surely be a very useful piece of work for the medical and dental students, practitioners, assistants, technicians, manufacturer and many others who directly or indirectly come in contact with these materials.
Dendritic Microstructure of Directionally Cast Al and Mg Alloys Dendritic Microstructure of Directionally Cast Al and Mg Alloys Новинка

Dendritic Microstructure of Directionally Cast Al and Mg Alloys

The present book investigates the spacing and orientation selection in directional solidification of Aluminum and Magnesium alloys under transient growth conditions, which represent the conditions dominant in industrial casting. Dendritic spacing and morphology established during casting often sets the scales of the downstream microstructure during manufacturing of alloys. This is particularly true in emerging technologies such as twin belt casting. The mechanical and physical properties of alloys are thus highly dependent on the morphology established during solidification. It is shown both experimentally and through phase field modeling that the previously obtained geometrical models to predict the dendrite spacing is not valid under transient growth. Instead, the initial conditions and history of the growth highly influence the final spacing. The orientation selection of hexagonal dendrites is discussed in chapter four.
Casting Reliability of Oxidising Prone Metal Alloys Casting Reliability of Oxidising Prone Metal Alloys Новинка

Casting Reliability of Oxidising Prone Metal Alloys

Aluminium alloys are now used for various purposes in different industries like Automobile industries, Aerospace industries etc. The light weight of aluminium allows producing high strength to weight ratio materials. But these alloys are highly oxidising in nature which is responsible for poor casting products and thus deserves more research to develop the casting design. In this book the reliability of cast Al alloy, i.e. Al-7Si-0.6Mg (LM25), has been investigated using Weibull Modulus. The degree of degassing, ingate velocity are selected as the foundry variables to inspect their effect on the mechanical properties of castings. The ultimate tensile strength (UTS) values are then used to calculate the weibull Modulus which is the indicative parameter for casting reliability; the higher the Weibull Modulus, the higher the reliability of the casting. Gate velocity or the turbulence flow of the liquid metal in the mould has been found to have the second most detrimental effects on casting reliability. This book can help the various manufacturers, researchers to understand the appropriate casting design for sound casting of Aluminium alloys.
Innovative Ti Alloys for Biomedical Applications Innovative Ti Alloys for Biomedical Applications Новинка

Innovative Ti Alloys for Biomedical Applications

Increased applications of titanium and its alloys as biomaterials originates from their lower modulus, superior biocompatibility and better corrosion resistance when compared to conventional stainless and cobalt-based alloys. The topics of this book are composed of two parts, one is bioactive surface using inorganic treatments and grafted ALP molecule, and the other is the effects of rapid solidification and Cu addition on microstructures and martensitic transformation behaviors in Ti-Ni alloy.
Quality of Aluminum-Silicon Casting Alloys Quality of Aluminum-Silicon Casting Alloys Новинка

Quality of Aluminum-Silicon Casting Alloys

Quality indices and quality charts were used as evaluation tool for selecting the optimum conditions to be applied in practice in order to develop superior tensile properties and optimum quality in Al-Si casting alloys. The right alloy quality in engineering applications involves reaching a suitable compromise between numerous factors so as to present the maximum performance combined with cost efficiency. Alloy composition, solidification rate, and heat treatment procedures, are all parameters which closely affect alloy quality since they also influence the tensile properties of the casting. The quality of aluminum alloy castings may be defined using numerical values which correlate to their mechanical properties. Several models were proposed to correlate the quality of the Al-Si castings to the mechanical properties of these alloys.
Fractal Analysis Approach for Studying Pores in Cast Al Alloys Fractal Analysis Approach for Studying Pores in Cast Al Alloys Новинка

Fractal Analysis Approach for Studying Pores in Cast Al Alloys

The conventional method of reducing porosity in cast products includes sequential solidification, addition of risers and modification of the speed of pouring of the molten metal which are all pre-casting methods.In this study post casting method of reducing effects of harmful pores and identifying the point of crack initiations for eventual failure in cast products have been developed for aluminum alloys tested.These new methods were applied to the micro structures of the cast aluminum alloys to effect pore shape change,reduction in percentage porosity and identification of the point of crack initiation.In addition,it has been established that for heat treated samples, through the resulting curves that there is a critical value of sphericity (i.e a minimum point)above which any increase in sphericity causes a corresponding increase in fractal Dimension.
Volume Deficit Calculation of Cast Aluminium Silicon Alloys Volume Deficit Calculation of Cast Aluminium Silicon Alloys Новинка

Volume Deficit Calculation of Cast Aluminium Silicon Alloys

Volume deficit occurs in alloys during freezing and cooling due to decrease in specific volume and it is of major concern in the foundry industry. Volume deficit characteristic of cast Aluminium Silicon alloys has been discussed in the present study.Patterson and Engler have classified the volume deficit into four types namely, macro cavities, internal porosity, surface sinking and volumetric contraction. X-Ray computer tomography (XCT) is a more effective NDE tool in predicting the casting defects than conventional radiography. Quantification of internal closed porosity has been done through XCT.
Dentine Bonding Agents Dentine Bonding Agents Новинка

Dentine Bonding Agents

This book covers general concepts of dentine bonding agents with special reference to biocompatibility. Biocompatibility of all kinds of dental materials is of paramount importance in order to prevent/limit irritation or degeneration of the surrounding tissues where it is applied. The first part of this book gives an overview of dentine bonding agents and compared the cytotoxicity of human dental pulp cell lines to a mouse 3T3 cell line to cytotoxic challenges from dentine bonding agents. The second part of the book compared the cytotoxicity of recent dentine bonding agents through artificial membranes as well as thin dentine discs (after its reaction with apatite)as well as the primer part and the bond part separately. This book covers all relevant aspects of cytotoxicity of dentine bonding agents and will be a useful guide to dentists, dental students and researchers interested in the field of biocompatibility of dental materials.
Evolution Of Metals/Alloys Used In Prosthodontics Evolution Of Metals/Alloys Used In Prosthodontics Новинка

Evolution Of Metals/Alloys Used In Prosthodontics

This book reveals the history of metals and alloys and their importance in prosthodontics. This book covers the review of literature, classification, discuss the metals and alloys and also the recent alloys used in prosthodontics.This book also revels the recent classification of the alloys according to ADA. This book explains each alloys properties,uses, compositions, advantages and disadvantages of each alloy.
Modification of Al-Si Alloy by Non-Conventional Route Modification of Al-Si Alloy by Non-Conventional Route Новинка

Modification of Al-Si Alloy by Non-Conventional Route

Al-Si hypereutectic alloys find application in small engines, pistons for air conditioning compressors and other components in automatic transmission. They are lightweight and have an outstanding wear resistance, a lower thermal expansion coefficient, and very good casting characteristics. Use of such alloys gets limited because of the presence of extremely hard primary silicon phase which reduces its machinability. The present work makes an attempt to improve upon the mechanical properties of Al-17Si hypereutectic alloys by modification of primary silicon and eutectic silicon through non conventional route. The alloys are modified using oxides and chlorides addition. The effect of oxides and chlorides on the morphology and size of Si phases in the hypereutectic Al-Si alloys are investigated. The mechanical properties like hardness, tensile strength and % elongation were observed to increase in modified alloys. The improved properties are dependent on uniform distribution of fine fibrous eutectic Al–silicon and fine primary Si- particles. The results of the work should be useful for academic researchers and others interested in useful information about Al-Si alloys.
Study on Biodegradable Mg-Ca Alloy for Use in Biomedical Applications Study on Biodegradable Mg-Ca Alloy for Use in Biomedical Applications Новинка

Study on Biodegradable Mg-Ca Alloy for Use in Biomedical Applications

With the help of a great number of materials that have been implanted in the human body, advanced medical technology has had a great effect on the well being of human. In order to use metallic biomaterials in the body, they need to be non-toxic or non-carcinogenic, imposing no harm to the human body. At the present time, Magnesium and its alloys have experienced a significant increase in demand in biodegradable bone implant applications due to their biocompatibility as well as the fact that they have mechanical properties similar to natural bone. Previous studies on Calcium as an alloying element which has similar density to bone has shown that Mg-Ca alloys degrade within the bone and have biocompatibility both in vivo and vitro. The objectives of this book are to (a) study the effect of Ca content on the properties of binary Mg-Ca alloys and (b) assess the effect of forging parameters, forging temperature and speed, on the properties of binary Mg-1Ca alloy.
Recent Advancements In Dental Ceramics Recent Advancements In Dental Ceramics Новинка

Recent Advancements In Dental Ceramics

Dental Ceramic materials are best able to mimic the appearance of natural teeth. Metal ceramic restorations have been available for more than three decades.metal ceramic restoration has gained popularity from its predictable performance and reasonable esthetics. Despite its success, the demand for improved esthetics and the concerns regarding the biocompatibility of the metal has lead to the introduction of all-ceramic restorations. Recent advancements in ceramic processing methods have simplified the work of the dental technician and have allowed greater quality control for ceramic materials, which has increased their mechanical reliability.
An Investigation into Solidification of Hypereutectic Al-Si Alloys An Investigation into Solidification of Hypereutectic Al-Si Alloys Новинка

An Investigation into Solidification of Hypereutectic Al-Si Alloys

Prof A.L. Greer (University of Cambridge), external examiner (in his report): This research project has dealt with the solidification of hypereutectic Al-Si alloys, a topic of continuing practical importance. The candidate gives adequate reviews of the theory of crystal nucleation in melts and of prior work on hypereutectic Al-Si alloys. The experimental work has involved casting, heat treatment, X-ray diffraction, metallography, differential thermal analysis and electron back-scatter diffraction. It appears that all of the techniques used have been standard, but the work has been competently carried out. The heart of the work is examination of the effects of phosphorous and strontium additions on the number of primary silicon particles per unit volume. The results have been fitted to a nucleation model by Perepezko. The nucleation temperature has been identified as a key variable. Prof I. Todd (University of Sheffield, UK), the supervision team: Masoumeh's research at the time focused on the simultaneous modification of both primary and eutectic silicon in aluminium silicon casting alloys, a topic that remains challenging and has significant commercial and technological value.
Recasting of Nickel-Chromium Alloy Recasting of Nickel-Chromium Alloy Новинка

Recasting of Nickel-Chromium Alloy

Recasting of dental casting alloy is of great advantage both economically and environmentally. Properties such as castability, hardness and porosity are of prime importance and must be considered in selection of an alloy for cast dental restorations. As per the review of literature there are very few studies on recasting of dental casting alloy. This study was designed to find out effect of recasting on castability, hardness and porosities. Castability was studied as complete casting of any metal restoration is mandatory and it can be know by castability test. Whitlock’s castability test was implemented in this study. Ideally hardness should be high to resist any scratches and to maintain the smoothness of cast restorations during laboratory procedures and also in the oral environment. It denotes strength, stiffness, brittleness, resilience and toughness or combination of any of these qualities. Porosities in dental casting alloy can alter physical and mechanical properties of the metal which may lead to failure of crown and bridge and also cast partial denture prosthesis. Porosities were evaluated using a scanning electron microscope in this study.
Investigations for casting of Al-SiC metal matrix composite Investigations for casting of Al-SiC metal matrix composite Новинка

Investigations for casting of Al-SiC metal matrix composite

Aluminium (Al) based metal matrix composites (MMC) have many potential engineering applications. There has been a critical need for casting of cost-effective MMC. Not much work hitherto been reported for casting of Al based MMC with vacuum moulding. An approach to macro-model the micro hardness and dimensional accuracy for casting of MMC of Al and its alloys have been proposed and applied. Relationship between micro hardness, dimensional accuracy and other parameter has been deduced by using Taguchi’s technique L9 orthogonal array (OA). Results indicate that the hardness of MMC developed depends significantly on the component volume, pouring temperature and composition. The comparison with experimental results will also serve as future validation of the model.
Surface Engineering of Light Alloys Surface Engineering of Light Alloys Новинка

Surface Engineering of Light Alloys

Surface Engineering of Light Alloys
Surface Technology of Aluminum and its alloys Surface Technology of Aluminum and its alloys Новинка

Surface Technology of Aluminum and its alloys

The book "Surface technology of aluminum and its alloys" describing the surface treatment, anodization and coloring of aluminum and its alloys. Aluminum alloys have many kinds of composition and it mean has been difficult to find a certain preplating procedure that will be equally satisfactory for all types and tempers of aluminum alloys, since the various alloys and products exhibit different metallurgical structures and different electrochemical behavior. Every alloy elements have different characteristic and structure that can effect to the behavior when treat with electroplating on aluminum metal. This book will be helpful for the students and researchers whoever doing research in the field of electrodeposition, anodization and coloring of aluminum and its alloys.
Development of Magnesium Alloys for Automobiles Development of Magnesium Alloys for Automobiles Новинка

Development of Magnesium Alloys for Automobiles

During the last decade, Mg alloys have attracted much attention for their application in various fields as a light-weight structural material. The widespread application of Mg alloys is due to the fact that Mg is the eighth most abundant element in the earth's crust and the third most plentiful element dissolved in seawater, with a relatively low cost, low density, good machinability, high specific strength and easy recycling capability. All these properties make Mg alloys excellent candidates as a structural material. The specific gravity of the magnesium is 1.74 that is about 2/5 of the titanium or about 2/3 of aluminium. The magnesium is the most lightweight in metal structure materials, and the strength is at the same level as aluminium. Lightweight structure is very useful in aviation, aerospace, automotive, transportation and other fields. Magnesium alloy has an obvious advantage in these fields because of its low density and high specific strength. Magnesium-alloy components are generally produced by casting processes. Mg–Al based alloys, such as AZ and AM series magnesium alloys, are the most commonly used commercial materials in automotive fields.
Ghali Edward Corrosion Resistance of Aluminum and Magnesium Alloys. Understanding, Performance, and Testing Ghali Edward Corrosion Resistance of Aluminum and Magnesium Alloys. Understanding, Performance, and Testing Новинка

Ghali Edward Corrosion Resistance of Aluminum and Magnesium Alloys. Understanding, Performance, and Testing

12205.24 руб. Найти похожее
Valuable information on corrosion fundamentals and applications of aluminum and magnesium Aluminum and magnesium alloys are receiving increased attention due to their light weight, abundance, and resistance to corrosion. In particular, when used in automobile manufacturing, these alloys promise reduced car weights, lower fuel consumption, and resulting environmental benefits. Meeting the need for a single source on this subject, Corrosion Resistance of Aluminum and Magnesium Alloys gives scientists, engineers, and students a one-stop reference for understanding both the corrosion fundamentals and applications relevant to these important light metals. Written by a world leader in the field, the text considers corrosion phenomena for the two metals in a systematic and parallel fashion. The coverage includes: The essentials of corrosion for aqueous, high temperature corrosion, and active-passive behavior of aluminum and magnesium alloys The performance and corrosion forms of aluminum alloys The performance and corrosion forms of magnesium alloys Corrosion prevention methods such as coatings for aluminum and magnesium Electrochemical methods of corrosion investigation and their application to aluminum and magnesium alloys Offering case studies and detailed references, Corrosion Resistance of Aluminum and Magnesium Alloys provides an essential, up-to-date resource for graduate-level study, as well as a working reference for professionals using aluminum, magnesium, and their alloys.
Dental Implants.Inmediate Loading Full Arch. New concepts Dental Implants.Inmediate Loading Full Arch. New concepts Новинка

Dental Implants.Inmediate Loading Full Arch. New concepts

For the last two decades, dental implants have been regarded as a predictable means of achieving oral rehabilitation. In retrospect, this seems to be due to three main factors: the biocompatibility of titanium, the design and surface of the implants and the receptivity of the host. Since the 1990s, two other elements have been added to the list and have been changing constantly: surgical technique and load conditions.
Dental Cements in Operative Dentistry Dental Cements in Operative Dentistry Новинка

Dental Cements in Operative Dentistry

Operative dentistry has evolved through centuries with the advancement in the procedure techniques and material sciences.Success of the operative procedures depends not only on the techniques but also on the judicious use of the dental materials.The main goal of the operative dentistry is to restore the proper tooth form in its harmonious function and esthetics.To achieve this goal large number of research was done and even being carried out today by many researchers to develope new and better restorative techniques and dental materials.Various materials used in operative dentistry are metal alloys like gold, silver, cements, ceramic and composites. Among these materials used, dental cements play a major role in operative dentistry. This book is a compilation of all dental cements and their application with their advantages and disadvantages.
Estimation Of Shrinkage Of Cast Al-Si Alloy Using Simulation Estimation Of Shrinkage Of Cast Al-Si Alloy Using Simulation Новинка

Estimation Of Shrinkage Of Cast Al-Si Alloy Using Simulation

Shrinkage characteristic of US 413 cast aluminium alloys has been discussed in the present study. The reduction in specific volume leads to shrinkage in castings and it can be visualised as a casting defect. The shrinkage characteristic has been studied using finite difference-based casting process simulation software and it is quantified using mathematical formulae. CAD has been used for construction of three-dimensional model of the shrinkage defect. Shrinkage characteristic has also been quantified through experimental validation studies and compared well with casting process simulation. Shrinkage characteristic study and control is essential for producing defect-free castings
Nanocoatings by Atomic Layer Deposition for Medical Applications Nanocoatings by Atomic Layer Deposition for Medical Applications Новинка

Nanocoatings by Atomic Layer Deposition for Medical Applications

This book deals with synthesize high quality nanocoatings thin films of alumina, titania, and alumina/titania multilayers with 25 nm and 50 nm thickness by Atomic Layer Deposition (ALD) method on different implantable orthopedic alloys ( Co-28Cr-6Mo ASTM F75 and Stainless steel 316L), and then characterization the structure of thin films by advanced nanotechnology methods and facilities, study the localized corrosion resistance in SBF, determine the biocompatibility, and demonstrate the bioactivity.
Fe-based Glassy and Nanocrystalline Magnetic Alloys Fe-based Glassy and Nanocrystalline Magnetic Alloys Новинка

Fe-based Glassy and Nanocrystalline Magnetic Alloys

Since the first synthesis of an amorphous phase in Au-Si system by rapid quenching of melt in 1960, a great large number of amorphous and glassy alloys were prepared up to date. Their alloy systems cover almost all metallic elements in the periodic table and can be classified to ferrous and non-ferrous alloy groups. Considering the present application situation and its future prospect of amorphous and glassy alloys, ferrous metal-based amorphous and glassy alloys are particularly important and attractive and their engineering importance has steadily increased toward the creation of a low-carbon society. Here we introduce the development examples of Fe- and Co-based amorphous and nanocrystalline alloys with unique morphologies such as wire, flaky powder and spherical particle and Fe-C base amorphous steels with new alloy compositions, in conjunction with their applications.
Extrusion of Magnesium-Zinc based alloys Extrusion of Magnesium-Zinc based alloys Новинка

Extrusion of Magnesium-Zinc based alloys

In this work, the influence of the additions of Zn, Zr and Ce-Mischmetall on the casting, indirect extrusion processing, microstructural development and resulting mechanical properties of Mg and Mg-alloys were investigated. It was found that grain size of the cast alloys is controlled by a grain growth factor (Q) mechanism. Q predicts the grain size of the cast billet, a parameter which influenced strongly the deformation response of the alloy during extrusion. Zener-Hollomon parameter (Z) was determined using process variables. Z correlated alloy dependent deformation variables during extrusion with the resulting average recrystallised grain size. Texture measurements revealed a singular recrystallisation development. Obtained results show correlations between initial alloy conditions and process variables indicating that the resulting microstructure and mechanical properties can be estimated by an appropriate set-up of selected alloy compositions and process parameters. Most of these correlations were based on proved phenomenological assumptions, which make them reliable values of reference for additional research and development of Mg wrought alloys.
Non Ferrous Alloys Non Ferrous Alloys Новинка

Non Ferrous Alloys

Summary: Materials are the essential part of our daily life and civilizations have been known by the materials they introduced. As the science progressed, scientists used the different combinations of material to enhance their properties to cope with new challenges and requirements. Alloys are also the combination of different materials specifically of metals. In early ages Iron and their alloys were used in the manufacturing heavy machineries. Gradually elements of lighter weight replaced the ferrous material like Alloys of Mg and Al. The main focus of this book will be on Aluminum Alloys specifically on Aluminum Alloy 2024. Aluminium alloys called super alloys because of their preferable mechanical and chemical properties for wide range of applications and uses. 2024 aluminium alloy was fabricated by taking percentage weight composition of Al-Cu-Mg-Zn.Corrosion tests were performed in 0.1M NaCl, 1% aqua regia and 5% aqua regia, 1% Potassium Dichromate solution and weight change was recorded in different intervals of time. Corrosion rate was studied by using Atomic Absorption Spectroscopy and morphological studies was accomplished by using Optical Microscopy.
Study of Oxidation Resistance on Ti-Al Alloys Study of Oxidation Resistance on Ti-Al Alloys Новинка

Study of Oxidation Resistance on Ti-Al Alloys

Results show that a decrease in Al content resulted in an increase in the amount of alpha2-Ti3Al phase, which led to an increase in the strength of the alloys but gave detrimental effect to the specific weight. In contrast, the higher Cr addition shows an increase in both strength and specific weight of the alloys. In addition, suitable amount of Cr addition (
Rapid solidification technology and lead free solder alloys Rapid solidification technology and lead free solder alloys Новинка

Rapid solidification technology and lead free solder alloys

The present book included three of the published papers, which have been chosen in CSA's Mechanical & Transportation Engineering Abstracts Database, America, 2005. Also, one of the published paper has the name of " New lead free solder alloy". Also one paper has been published in Key to metals,2012. In this book, we explained some basic concepts of metallic alloys, types and applications of metallic alloys. Furthermore we explained the types of solder alloys. In addition, illustration the importance of the rapid solidification technology that is used for producing alloys with improved properties.
Cerrobend Metal and it's Applications Cerrobend Metal and it's Applications Новинка

Cerrobend Metal and it's Applications

This work aims to get alloy cerrobend and the study of the physical properties and structural analysis of this alloy low degree fused at 75oC and studies the effect of radiation on components cerrobend in order to make sure of getting good specification alloy for medical and industrial applications. Therefore alloys were divided into three groups: The first group: binary alloys consisting of Bi50-Pb50, Bi45-Sn55, and Bi50 -Cd50 in this group noticed effect of radiation on the physical characteristics and structural analysis of these alloys. The second group: three alloys consisting of Bi40-Pb40-Sn20, Bi40-Pb40-Cd20 and Bi40-Sn40-Cd20 these alloys have noted that the effect of radiation less than binary alloys and this shows the sequence in the selection of the best alloy. The third group: the alloy quaternary and this alloy is the basis of this work and are considered the best alloy obtained consisting of bismuth, lead, tin, cadmium and called (cerrobend) and that have not gets any effects her physical properties as a result of exposure to radiation.
High Temperature Oxidation of Pt-based Alloys High Temperature Oxidation of Pt-based Alloys Новинка

High Temperature Oxidation of Pt-based Alloys

This book is considered very critical for those who wish to understand the detailed behaviour of most protective-oxide forming alloys, especially Pt-based alloys, in aggressive high temperature environment. These alloys are being developed to operate at higher temperatures than nickel-based superalloys (NBSAs), currently being used for production of hot section components of turbine engines. Detailed information on oxidation kinetics, oxidation mechanisms, surface and cross-sectional morphology as well as stress measurements of these alloys are contained in this book. It is hereby recommended for researchers working on advanced high temperature materials as well as students at all levels studying materials science, metallurgy, metallurgical and materials engineering, physical chemistry, materials physics and other related fields to get a copy of this book. I am sure you will never regret your action. Kindly enjoy!
Cobalt - Physical Properties, Metallurgy, Alloys, Chemistry and Uses Cobalt - Physical Properties, Metallurgy, Alloys, Chemistry and Uses Новинка

Cobalt - Physical Properties, Metallurgy, Alloys, Chemistry and Uses

This is a compilation of two previous Canada Department of Mines titles, "The Physical Properties of the Metal Cobalt" (H.T. Kalmus), and "Cobalt - Its Occurrence, Metallurgy, Uses and Alloys" (Charles W. Drury), with some minor corrections and additions.
Effect of Laser treatment on Tribological behaviour of Al-Si alloys Effect of Laser treatment on Tribological behaviour of Al-Si alloys Новинка

Effect of Laser treatment on Tribological behaviour of Al-Si alloys

Al-Si alloys find wide application in many parts of internal combustion engines such as cylinder blocks, pistons, liners, clutches, rocket arms, pivots etc. Any reduction in friction and wear of these alloys not only increase the life of the bearings, but also reduces the emission and decreases the fuel consumption. Investigations on the variation of the counter-face mating material on friction and wear explored. The details of experimental methods, materials and testing procedures elucidated. This book reports the dry sliding behavior of Al sliding against itself, Al-5 Si and on steel. The wear behavior of hypo-eutectic, eutectic and hyper-eutectic Al-Si alloys (Al-5 Si, Al-12 Si and Al-20 Si) with and without CO2 laser and Nd:YAG laser treatment was illustrated. Unidirectional dry sliding wear behavior of as cast and laser processed with CO2 laser on Al-Si alloys sliding with steel disc had been presented. Solid particle erosion behavior of Al-Si alloys with as cast, laser re-melted and alloyed with SiC precursor using CO2 laser was discussed.
Novel amorphous and nanostructured Al-based alloys Novel amorphous and nanostructured Al-based alloys Новинка

Novel amorphous and nanostructured Al-based alloys

Studying the glass forming ability and devitrification of Al-based amorphous alloys we have prepared novel amorphous alloys which have primordial importance for preparation of compacts with the highest temperature stability and strength. The main results of the study are: 1. I have applied data processing methods known in the literature for Al-based amorphous alloys (both for the own and literature data) which was useful to place the Al-based alloys among the other metallic glasses (based on Zr, Fe, Cu,etc.) based on some physical characteristics, like heat of mixing, atomic mismatch, crystallization temperature and hardness: 1.1.A combination of the heat of mixing and atomic mismatch parameters have been used to assess the GFA of Al-based alloys.It can be stated that for Al based amorphous compositions the ?H is between -9 and -20 kJ/mole whereas for bulk metallic glasses (based on Fe, Cu, Pd, etc.) ?H is between -25 and -40 kJ/mole [S1,S2].The low GFA of Al based alloys can be attributed to relative low heat of mixing and low relative atomic volume differences of constituent elements. In addition, the lack of deep eutectic at the high Al concentration contributes to the low GFA.
High Temperature Corrosion of the Coated TiAl Alloys High Temperature Corrosion of the Coated TiAl Alloys Новинка

High Temperature Corrosion of the Coated TiAl Alloys

Titanium alloys are well known as materials for high temperature applications, especially in aero engines where weight is very important. These alloys were used in early 1940. Today in XXI century due to the high specific strength, light weight, TiAl – based alloys find increasing applications as structural materials in advanced engineering structures, as a bio compatible material (hip prosthesis). Unfortunately TiAl based materials show quite poor resistance at high temperatures, above 600 oC in different environments (oxidation. Sulphidation, oxidation/sulphidation), thus light weight materials as TiAl based alloys need to be protected by different protective coatings with a reservoir of Al and Cr. Further this book presents interdiffusion modelling studies based on Darken concept. This book describes is an excellent reference for materials scientists and engineers that need more knowledge about high temperature resistance of TiAl based alloys.
Potential release of in vivo trace metals from metallic medical implants in the human body Potential release of in vivo trace metals from metallic medical implants in the human body Новинка

Potential release of in vivo trace metals from metallic medical implants in the human body

Metal ion release from metallic materials, e.g. metallic alloys and pure metals, implanted into the human body in dental and orthopedic surgery are becoming a major cause for concern. This book briefly provides an overview of both metallic alloys and pure metals used in implant materials in dental and orthopedic surgery. Additionally, a short section is dedicated to important biomaterials and their corrosive behavior in both real solutions and various types of media that model human biological fluids and tissues. The present book gives an overview of analytical methods, techniques and different approaches applied to measurement of in vivo trace metals released into body fluids and tissues from patients carrying metal-on-metal prosthesis and metal dental implants. Reference levels of ion concentrations in body fluids and tissues that have been determined by a host of studies are compiled, reviewed and presented in this paper. Finally, a collection of published clinical data on in vivo released trace metals from metallic medical implants is included.
R. Revie Winston Uhlig's Corrosion Handbook R. Revie Winston Uhlig's Corrosion Handbook Новинка

R. Revie Winston Uhlig's Corrosion Handbook

14162.51 руб. Найти похожее
This book serves as a reference for engineers, scientists, and students concerned with the use of materials in applications where reliability and resistance to corrosion are important. It updates the coverage of its predecessor, including coverage of: corrosion rates of steel in major river systems and atmospheric corrosion rates, the corrosion behavior of materials such as weathering steels and newer stainless alloys, and the corrosion behavior and engineering approaches to corrosion control for nonmetallic materials. New chapters include: high-temperature oxidation of metals and alloys, nanomaterials, and dental materials, anodic protection. Also featured are chapters dealing with standards for corrosion testing, microbiological corrosion, and electrochemical noise.
Corrosion Behavior of tin, Indium and Sn-In alloys. Corrosion Behavior of tin, Indium and Sn-In alloys. Новинка

Corrosion Behavior of tin, Indium and Sn-In alloys.

The electrochemical behavior of tin, indium and Sn-In alloys in 0.5 M solutions of oxalic, Malic and citric acids at temperature 30-60 oC was studied by Potentiodynamic technique. The results showed that the peak height and corrosion rate increase with increasing the temperature. The corrosion of tin, indium and Sn-In alloys is affected by the formation of soluble complex species with organic acid anions and the order of decreasing aggressiveness is oxalic < malic < citric acid. The corrosion rate of Sn-In alloys also affected by percentage of In in the alloy. Where In form two phases alloys with Sn (? and ? phase), these results were confirm with X-ray diffraction. The corrosion inhibition of tin, indium and their alloys in aqueous acidic solutions in presence of Adenine, Adenosine and 2, 4, 6 tris (2pyridyl)-1, 3, 5-triazine (PYT) as corrosion inhibitors was studied.
Development of Damping Multiple Alloyed Steels Development of Damping Multiple Alloyed Steels Новинка

Development of Damping Multiple Alloyed Steels

Properties of iron-carbon alloys are determined by chemistry and chemical structure, which are results of material getting and its further working. For developing of materials and technologies, it is necessary to know physical and chemical phenomena and processes, passing in materials on different stages of its getting, working and running, its prediction, description and control by them. Therefore research studies are relevant in the sphere of metallurgy and science of materials, which are directed to making of materials with sufficient damping and soundproof properties. In this connection substantiation and working of alloyed damping alloys for details, working in impact mode is very important.In the book the questions on the development of multiple alloyed steels, the influence of chemical composition on the damping properties of alloys, methods of investigation of physical-mechanical characteristics of alloys, the types of treatment, the types of devices to study materials on sound insulation, the acoustic characteristics of materials, measurement of acoustic damping alloys and complexly etc.
Casting Procedures Casting Procedures Новинка

Casting Procedures

This work' CASTING PROCEDURES' describes the casting process in dentistry beginning from its evolution to its current status. Each and every step, right from fabrication of the wax pattern to final finish of the casting has been described in a simple and easy to understand language. Hope its serves the purpose to enable its readers understand the very process of CASTING in an easy manner.
Fluidized Bed Technique Fluidized Bed Technique Новинка

Fluidized Bed Technique

Heat treatment is the most common process used to alter the mechanical properties of aluminum alloys. Traditional heat treatment technology applies circulating air convection furnaces for the purposes of obtaining a T6 or T7 temper. With conventional heat treating systems, however, prolonged solution heat treatment and aging times of over 20 h are required for heat treatment of aluminum casting alloys, entailing high energy costs. The long cycle times required for heat treating with conventional systems go contrary to industry requirements where the goal is to improve the performance of the part and to reduce the time of manufacturing. The fluidized bed (FB) heat-treating process makes it possible to reduce the time required for heat treating significantly (2 h), while at the same time increasing the uniformity of the heat treatment process. The use of fluidized beds is considered to be an innovative technology for the heat treatment process of Al-Si cast alloys and appears to be more effective than conventional furnace techniques. This book,therefore, explains the influence of fluidized bed heat treatment on the performance of aluminum based castings used in automotive industry.
Effect of some Element Addition on the Mechanical of Lead Free Solder Effect of some Element Addition on the Mechanical of Lead Free Solder Новинка

Effect of some Element Addition on the Mechanical of Lead Free Solder

This work is devoted to investigate the tensile properties of the newly developed Sn–9Zn–xBi (1, and 4 wt.%) lead free solder alloys at different strain rates and temperatures to compare the results with the eutectic Sn–9Zn. also, the investigation of creep characteristics at different stresses and temperatures for selected lead-free solder alloys are presented. The microstructure and the thermal properties of these alloys were also thoroughly investigated and further, to determine the effect of Bi addition on promoting the properties of Sn–Zn alloys.
Twin Roll Casting of AZ31 Magnesium Alloy Twin Roll Casting of AZ31 Magnesium Alloy Новинка

Twin Roll Casting of AZ31 Magnesium Alloy

The current book comprises a study on twin roll casting (TRC) of AZ31 magnesium alloy. TRC process is an attractive manufacturing process in terms of sheet production. This process incorporates casting and hot rolling in one process. In the current book, a review of the past studies on the TRC of steel, aluminum and magnesium alloys is presented followed by developing a thermal-fluid-stress model to simulate the thermo-mechanical behavior of the AZ31 twin roll cast strip. The process was studied in terms of temperature distribution and stress-strain development in the cast strip, roll separating force, solidification cooling rate and.... The effect of roll diameter was also studied to develop a scale-up model. The results were then correlated to conditions which lead to inverse and center-line segregation formation to develop process maps. Using process maps, the optimum casting conditions to produce high quality magnesium sheets are determined.
Effects of ordering in III–V semiconductor alloy systems Effects of ordering in III–V semiconductor alloy systems Новинка

Effects of ordering in III–V semiconductor alloy systems

This work provides and highlights the effects of microscopic ordering on the properties of semiconductor alloys. It brings us one–step closer in understanding the fundamental ground that influences the properties of semiconductor alloys. For the alloy studied, i.e. AlGaAs, GaInP, BGaP, and AlGaInP, our results can serve as a guide for theoreticians, experimentalists, and device engineers to focus on the microscopic structures that are predicted to give their desired properties. This work will draw attentions to the fact that properties of semiconductor alloys can be adjusted by controlling the atomic ordering in addition to the alloy composition. This opens up a new way to control semiconductor properties, such as bandgap and electron effective mass. This work also helps to gain better understanding in the relationship between atomic arrangements in alloys and the observable properties.
In vivo Biodegradation and Biocompatibility studies of biomaterial In vivo Biodegradation and Biocompatibility studies of biomaterial Новинка

In vivo Biodegradation and Biocompatibility studies of biomaterial

Biomaterials play an important role in artificial organ replacement. These biomaterials are used as scaffolds for the tissue growth. One such materials is poly(?-caprolactone-co-lactide-co-glycolide) diacrylate (PCLLGA-DA), prepared by ring opening polymerization of lactide (LA), glycolide (GA) and ?- caprolactone (?-CL), diacrylation and photo polymerization. The photopolymerized polymer films had good physical and mechanical properties and the in vitro biocompatibility studies showed positive results. However, in vivo biocompatibility test are necessary because the in vivo condition may produce different effects on the biocompatibility of polymer. This project deals with the biocompatibility evaluation and biodegradation evaluation of the polymer poly(?-caprolactone-co-lactide-co-glycolide) diacrylate (PCLLGA-DA). The polymer is synthesized with different molecular weight by varying the amount of the initiator and the percentage of monomer is fixed at ?-CL-60 mol%, LA-20 mol% and GA-20 mol%. The resultant polymer films, produced after photopolymerization, were inserted into the subcutaneous layer of rats & bio compatibility was analysed
Development and characterization of biodegradable Fe-based alloys Development and characterization of biodegradable Fe-based alloys Новинка

Development and characterization of biodegradable Fe-based alloys

Iron and its alloys are currently evaluated for use as biodegradable materials for temporary medical implants. The concept of a metallic implant that degrades within the human body has become increasingly accepted in recent years. If the material degraded in the body while the tissue recovered implant removal would become obsolete. Fe is a promising candidate as a degradable implant material. This work develops a design strategy which takes into account electrochemical, microstructural and toxicological aspects. The aim is to find alloys whose performance is suitable for implant applications, in terms of both degradation rate and high strength and ductility. The austenitic high-Mn alloys developed in the study possess an impressive combination of high ductility, simultaneously high strength levels and a pronounced strain hardening response. Degradation properties were evaluated by means of immersion testing and electrochemical impedance spectroscopy in physiological media. In vitro cytocompatibility studies were performed by means of indirect cell tests using extracts from the alloys. The overall performance of the alloys developed and characterized in this study is very promising.
Role of Synthetic Hydroxyapatite in dentistry Role of Synthetic Hydroxyapatite in dentistry Новинка

Role of Synthetic Hydroxyapatite in dentistry

Hydroxyapatite (HAp) is the emerging bioceramic, which is widely used in various biomedical applications, mainly in dentistry. Hydroxyapatite has excellent biological behavior and its composition and crystal structure is same as apatite in human dental structures and skeletal system. It possesses exceptional biocompatibility and unique bioactivity. It has been widely used in hard tissue replacement and reconstruction applications, such as implant coatings, and bone substitues etc. Incorporation of hydroxyapatite into various restorative materials was found to improve mechanical properties of material without impeding their inherent biological properties
The electrochemical production of thin films of rhenium chalcogenides The electrochemical production of thin films of rhenium chalcogenides Новинка

The electrochemical production of thin films of rhenium chalcogenides

This book provides an electrochemical production of semi-conductor thin films of rhenium chalcogenide alloys. In the work mechanism and kinetics of rhenium-selenium alloy deposition process from acidic and alkaline Re-Te solutions and Re-S from thiocarbamide solutions were studied. Main regularities of co-deposition process, nature and character of rhenium chalcogenides polarization from solutions were researched. Some physical and electro-physical properties of rhenium alloys were studied. Photo-electrochemical activity of thin films on the basis of Re-Se alloys was studied and these thin films can be used as a photo-electrode material for conversion of solar energy into chemical. This book is a useful guide for students and scientists working on electrochemistry
Composites and its Commercial Systems Composites and its Commercial Systems Новинка

Composites and its Commercial Systems

Dental composites have proved to be a boon to restorative dentistry. Introduced more than 50 years ago, composite resin technology has given a new outlook in the field of restorative dentistry offering improved physical properties. However, composite restorative materials represents a unique class of biomaterials with severe restrictions on biocompatibility, curing behavior and esthetics ultimately resulting in shrinkage, polymerization induced shrinkage stress, improper marginal adaptation, secondary caries and limited toughness leading to failure of the restoration. Hence, the demands on these restorations with regard to mechanical properties, placement and need for in situ curing leave significant room for advancements. This book reviews the general characteristics of the dental composite restorative materials and its commercial systems available in the market so that while performing the procedure, it becomes easy and clear for the clinician to choose a particular material in a particular clinical situation.
Investigation of defects in Fe3Al-based alloys by PAS Investigation of defects in Fe3Al-based alloys by PAS Новинка

Investigation of defects in Fe3Al-based alloys by PAS

Positron annihilation spectroscopy is non-destructive method for studying defects in solid state materials. Binary alloys of iron and aluminium are industrially interesting materials and are suitable candidate for studying the behavior of intermetallics with vacancy concentrations several orders higher than in pure metals. Measuring of the positron lifetime enables to classify defects type, volume size and concentration. Measuring of coincidence Doppler broadening of annihilation peak carries information about chemical environment of a positron trapped at the defect. These measurements are supported by quantum-mechanics theoretical calculations which help us to interpret the measured data. Mechanical properties were studied simultaneously by the measuring of Vickers microhardness and compared with the positron annihilation spectroscopy results. The correlation of defect concentration with mechanical properties was observed in Fe-Al alloys with various composition and after various thermal treatments.
Ulla Åkerlind Solidification and Crystallization Processing in Metals and Alloys Ulla Åkerlind Solidification and Crystallization Processing in Metals and Alloys Новинка

Ulla Åkerlind Solidification and Crystallization Processing in Metals and Alloys

Solidification and Crystallization Processing in Metals and Alloys Hasse Fredriksson KTH, Royal Institute of Technology, Stockholm, Sweden Ulla Åkerlind University of Stockholm, Sweden Solidification or crystallization occurs when atoms are transformed from the disordered liquid state to the more ordered solid state, and is fundamental to metals processing. Conceived as a companion volume to the earlier works, Materials Processing during Casting (2006) and Physics of Functional Materials (2008), this book analyzes solidification and crystallization processes in depth. Starting from the thermodynamic point of view, it gives a complete description, taking into account kinetics and mass transfer, down to the final structure. Importantly, the book shows the relationship between the theory and the experimental results. Topics covered include: Fundamentals of thermodynamics Properties of interfaces Nucleation Crystal growth – in vapours, liquids and melts Heat transport during solidification processes Solidification structures – faceted, dendritic, eutectic and peritectic Metallic glasses and amorphous alloy melts Solidification and Crystallization Processing in Metals and Alloys features many solved examples in the text, and exercises (with answers) for students. Intended for Masters and PhD students as well as researchers in Materials Science, Engineering, Chemistry and Metallurgy, it is also a valuable resource for engineers in industry.
Effect Of Geometry On Quality Of Casting In Gravity Casting Process Effect Of Geometry On Quality Of Casting In Gravity Casting Process Новинка

Effect Of Geometry On Quality Of Casting In Gravity Casting Process

As in any Casting process, Gravity die casting process has a significant rejection due to defective casting process. There are many factors which affects these defects in the component. One of the main reasons is the improper design of the component itself. If the component geometry is properly studied and analyzed, it can effectively reduce the defects arising in the casting of a component. Design For Manufacturability (DFM) during the component design stage eliminates the need for tool correction and re-tooling at the later stage of product life cycle which will indirectly increase the cost of the end product. The main objective of this research work is to study the geometry of the Gravity Casting Part , understand the defect pattern using Non destructive testing and thermal analysis and relate the geometry parameters to the induced defect in the casting. The idea is also to prepare a set of recommendation as a tool for Design for Manufacturability for Gravity Casting Process.
Inverse Heat Flow Calculations Inverse Heat Flow Calculations Новинка

Inverse Heat Flow Calculations

Strip casting is an economically and fast method method to cast thin aluminum sheets at gauges close to the final product gauge. However, the metallurgy of many aluminum alloys is not suitable for strip casting and poor quality may be achieved in the process. The use of a pilot-scale belt-caster for research is expensive, and a single-belt casting simulator has been constructed to study a broad range of casting parameters that affect the cast quality. To achieve a sensible simulation, the conditions should be as identical as possible to a pilot-scale belt-caster. One of the most crucial factors is the heat-flow occurring in the interface between the solidifying metal and its surroundings. Since the flow is hard to measure, a numerical model for interfacial heat flow calculations was created. The model uses a finite difference inverse algorithm for calculations of the heat flow and is written in Matlab. It can be summarized as an automatic IHCP (inverse heat conduction problem) method.
Ulanovskiy I. B. Hydrogen Diffusion and Porosity Formation In Aluminium Ulanovskiy I. B. Hydrogen Diffusion and Porosity Formation In Aluminium Новинка

Ulanovskiy I. B. Hydrogen Diffusion and Porosity Formation In Aluminium

This book presents experimental data obtained by the author on hydrogen permeability, solubility and diffusion of hydrogen in aluminum and its alloys, as well as on porosity formation in aluminum and its alloys. The author offers new techniques for determining the surface tension of solid metals and the hydrogen content in aluminum alloys containing components with high vapour pressures. The book also considers the theory of porosity formation in metals. For the first time ever, the author presents a technique for metals and alloys treatment securing the removal of gases and eliminating gas unsoundness, known as the ‘hot isostatiс pressing technique’. The author proposes a technology, which ensures cutting down flaws caused by gas cavities in aluminum aircraft shell plates.
Development of Iron-Phosphorus alloys through Hot Powder Forging Development of Iron-Phosphorus alloys through Hot Powder Forging Новинка

Development of Iron-Phosphorus alloys through Hot Powder Forging

In this book, the full spectrum of processing of Iron-Phosphorus alloys through Powder Metallurgy (P/M) route has been addressed. Phosphorus in steel in general increases the yield strength, ultimate tensile strength and hardness. Phosphorus also improves wear resistance, corrosion resistance and soft magnetic characteristics of iron. Phosphorus contents however promote brittle behaviour in wrought route owing to segregation of Fe3P along grain boundaries. P/M route avoids embrittlement in high Phosphorus containing Iron based alloys. In the present work the alloys have been forged using a hot powder forging technique. In this process mild steel encapsulated powders were hot forged into slabs. Then the slabs were hot rolled and annealed to relieve the residual stresses. Densifications as high as 98.9% of theoretical density have been realized. Very little academic literature exists on how to reduce the brittle behaviour of Phosphorus. The properties of phosphoric irons manufactured by the powder route have not been studied extensively by the scientific community. This book, therefore, provides a new metric of success for development of Fe-P alloys.
Corrosion Of Copper Alloys In Acids Corrosion Of Copper Alloys In Acids Новинка

Corrosion Of Copper Alloys In Acids

The main aim of this book is to introduce the mechanisms of corrosion of copper and copper alloys in acidic media. Corrosion is phenomena occurred at the surface of materials exposed to chemically aggressive environments. Consequently, the use of copper corrosion inhibitors in such conditions is necessary since no protective passive layer can be expected. This book deals with the corrosion of copper in different ways.
Effect of Composition in As-Cast and Homogenized Al-Si-Cu Alloys Effect of Composition in As-Cast and Homogenized Al-Si-Cu Alloys Новинка

Effect of Composition in As-Cast and Homogenized Al-Si-Cu Alloys

Aluminium alloys with a wide range of properties are used in engineering structures. These properties can be largely modified by changing the alloy composition and by cold working. Si, Cu, Zn and Mg are the most commonly used alloying elements in aluminium, which have sufficient solid solubility. The as-cast microstructure of cast aluminium alloys normally displays significant segregation and supersaturation. For this, homogenization of aluminium alloys is often done to improve workability and mechanical properties. This book is based on the research about influence of Cu content, cold working and homogenization in Al-Si alloys. The effects were analysed using microstructure study, phase-property modelling, image analysis and hardness measurement. This work should help researchers and metallurgists who are working on modification of alloy properties. Also it will help students who have keen interest in study of microstructure, modelling and image analysis.
Alloys Plating Finger Ring for Women - Black + Silver Alloys Plating Finger Ring for Women - Black + Silver Новинка

Alloys Plating Finger Ring for Women - Black + Silver

Color Black + Silver Quantity 1 Set Shade Of Color Black Material Alloys plating Gender Women Suitable for Adults U.S Size 7.5 Ring Diameter 17 mm Ring Circumference 54 mm Packing List 1 x Finger ring

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Valuable information on corrosion fundamentals and applications of aluminum and magnesium Aluminum and magnesium alloys are receiving increased attention due to their light weight, abundance, and resistance to corrosion. In particular, when used in automobile manufacturing, these alloys promise reduced car weights, lower fuel consumption, and resulting environmental benefits. Meeting the need for a single source on this subject, Corrosion Resistance of Aluminum and Magnesium Alloys gives scientists, engineers, and students a one-stop reference for understanding both the corrosion fundamentals and applications relevant to these important light metals. Written by a world leader in the field, the text considers corrosion phenomena for the two metals in a systematic and parallel fashion. The coverage includes: The essentials of corrosion for aqueous, high temperature corrosion, and active-passive behavior of aluminum and magnesium alloys The performance and corrosion forms of aluminum alloys The performance and corrosion forms of magnesium alloys Corrosion prevention methods such as coatings for aluminum and magnesium Electrochemical methods of corrosion investigation and their application to aluminum and magnesium alloys Offering case studies and detailed references, Corrosion Resistance of Aluminum and Magnesium Alloys provides an essential, up-to-date resource for graduate-level study, as well as a working reference for professionals using aluminum, magnesium, and their alloys.
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