bonding theory for metals and alloys

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Bonding Theory For Metals And Alloys

Author : Frederick E. Wang
ISBN : 0080459730
Genre : Technology & Engineering
File Size : 84. 92 MB
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Bonding Theory for Metals and Alloys exhorts the potential existence of covalent bonding in metals and alloys. Through the recognition of the covalent bond in coexistence with the 'free' electron band, the book describes and demonstrates how the many experimental observations on metals and alloys can all be reconciled. Subsequently, it shows how the individual view of metals and alloys by physicists, chemists and metallurgists can be unified. The physical phenomena of metals and alloys covered in this book are: Miscibility Gap between two liquid metals; Phase Equilibrium Diagrams; Phenomenon of Melting. Superconductivity; Nitinol; A Metal-Alloy with Memory; Mechanical Properties; Liquid Metal Embrittlement; Superplasticity; Corrosion; The author introduces a new theory based on 'Covalon' conduction, which forms the basis for a new approach to the theory of superconductivity. This new approach not only explains the many observations made on the phenomenon of superconductivity but also makes predictions that have been confirmed. * Openly recognizes the electrons as the most important and the only factor in understanding metals and alloys * Proposes "Covalon" conduction theory, which carries current in covalent bonded pairs * Investigates phase diagrams both from theoretical and experimental point of view

Catalysis By Metals And Alloys

Author : V. Ponec
ISBN : 0080528651
Genre : Science
File Size : 89. 13 MB
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Catalysis by Metals and Alloys

Diffusion Bonding Of Materials

Author : N.F. Kazakov
ISBN : 9781483150550
Genre : Technology & Engineering
File Size : 22. 95 MB
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Diffusion Beading of Materials is an attempt to pool the experience in vacuum diffusion bonding accumulated by a number of mechanical engineering works, research establishments, and colleges. The book discusses the principal bonding variables and recommended procedures for diffusion bonding in vacuum; the equipment for diffusion bonding and production rate; and the mechanization and automation of equipment. The text also describes the diffusion bonding of steels; the bonding of cast iron and cast iron to steel; and the bonding of dissimilar metals and alloys. The bonding of refractory and active metals and their alloys; the bonding of high-temperature alloys, nickel and nickel alloys; and the bonding of cemented carbides and of a cemented carbide to steel are also considered. The book further tackles the repair and reconditioning by diffusion bonding; the bonding of porous materials; and diffusion metallurgy. The text also encompasses nonmetals and their joining to metals; quality control of diffusion-bonded joints; accident prevention; and cleanliness in vacuum diffusion bonding.

Metal And Alloy Bonding An Experimental Analysis

Author : R. Saravanan
ISBN : 1447122046
Genre : Technology & Engineering
File Size : 90. 43 MB
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Charge density analysis of materials provides a firm basis for the evaluation of the properties of materials. The design and engineering of a new combination of metals requires a firm knowledge of intermolecular features. Recent advances in technology and high-speed computation have made the crystal X-ray diffraction technique a unique tool for the determination of charge density distribution in molecular crystal. Methods have been developed to make experimental probes capable of unraveling the features of charge densities in the intra- and inter-molecular regions of crystal structures. In Metal and Alloy Bonding - An Experimental Analysis, the structural details of materials are elucidated with the X-ray diffraction technique. Analyses of the charge density and the local and average structure are given to reveal the structural properties of technologically important materials. Readers will gain a new understanding of the local and average structure of existing materials. The electron density, bonding, and charge transfer studies in Metal and Alloy Bonding - An Experimental Analysis contain useful information for researchers in the fields of physics, chemistry, materials science, and metallurgy. The properties described in these studies can contribute to the successful engineering of these technologically important materials.

The Engel Brewer Theories Of Metals And Alloys

Author : William Hume-Rothery
ISBN : UOM:39015069200197
Genre : Technology & Engineering
File Size : 64. 34 MB
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Introduction To The Electron Theory Of Metals

Author : U. Mizutani
ISBN : 0521587093
Genre : Science
File Size : 38. 41 MB
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Electron theory of metals textbook for advanced undergraduate students of condensed-matter physics and related disciplines.

The Nature Of Metals

Author : Bruce A. Rogers
ISBN : 9781483227108
Genre : Technology & Engineering
File Size : 64. 89 MB
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The Nature of Metals focuses on the characteristics, properties, composition, and reactions of metals. The publication first takes a look at the composition of metals, arrangement of atoms in metals, and alloys. Discussions focus on solubility of metals in each other, constitutional diagrams, naming of planes, patterns of complex structures, sizes of atoms, space lattices, removal of metal by etching reagents, and how etching reveals structure. The text then examines solidification, movement of atoms in solid metals, some effects of atomic movements, and hardening of steel. Topics include effect of rate of cooling, hardenability, tempering, mechanism of age hardening, effect of temperature on the hardening behavior, effect of rate of cooling on the precipitation of tin, mechanism of diffusion, and relative rates of diffusion. The manuscript explores metals in nuclear reactors, recrystallization, and special arrangements of atoms, including peculiar behavior in copper-gold alloys, formation of subgrains, and screw dislocations. The book is a valuable source of information for researches interested in the nature of metals.

Nanostructured Metals And Alloys

Author : S H Whang
ISBN : 9780857091123
Genre : Technology & Engineering
File Size : 57. 70 MB
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Tensile strength, fatigue strength and ductility are important properties of nanostructured metallic materials, which make them suitable for use in applications where strength or strength-to-weight ratios are important. Nanostructured metals and alloys reviews the latest technologies used for production of these materials, as well as recent advances in research into their structure and mechanical properties. One of the most important issues facing nanostructured metals and alloys is how to produce them. Part one describes the different methods used to process bulk nanostructured metals and alloys, including chapters on severe plastic deformation, mechanical alloying and electrodeposition among others. Part two concentrates on the microstructure and properties of nanostructured metals, with chapters studying deformation structures such as twins, microstructure of ferrous alloys by equal channel angular processing, and characteristic structures of nanostructured metals prepared by plastic deformation. In part three, the mechanical properties of nanostructured metals and alloys are discussed, with chapters on such topics as strengthening mechanisms, nanostructured metals based on molecular dynamics computer simulations, and surface deformation. Part four focuses on existing and developing applications of nanostructured metals and alloys, covering topics such as nanostructured steel for automotives, steel sheet and nanostructured coatings by spraying. With its distinguished editor and international team of contributors, Nanostructured metals and alloys is a standard reference for manufacturers of metal components, as well as those with an academic research interest in metals and materials with enhanced properties.

Linus Pauling

Author : Linus Pauling
ISBN : 9812811966
Genre : Biography & Autobiography
File Size : 60. 13 MB
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Linus Pauling wrote a stellar series of over 800 scientific papers spanning an amazing range of fields, some of which he himself initiated. This book is a selection of the most important of his writings in the fields of quantum mechanics, chemical bonding (covalent, ionic, metallic, and hydrogen bonding), molecular rotation and entropy, protein structure, hemoglobin, molecular disease, molecular evolution, the antibody mechanism, the molecular basis of anesthesia, orthomolecular medicine, radiation chemistry/biology, and nuclear structure. Through these papers the reader gets a fresh, unfiltered view of the genius of Pauling's many contributions to chemistry, chemical physics, molecular biology, and molecular medicine. Contents.: The Chemical Bond: Metallic Bonding; Hydrogen Bonding; Crystal and Molecular Structure and Properties: Ionic Crystals and X-Ray Difraction; Molecules in the Gas Phase and Electron Diffraction; Entropy and Molecular Rotation in Crystals and Liquids; and other papers. Readership: Chemists, biochemists, molecular biologists and physicists.

Solidification And Solid State Transformations Of Metals And Alloys

Author : Maria Jose Quintana Hernandez
ISBN : 9780128126080
Genre : Technology & Engineering
File Size : 52. 87 MB
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Solidification and Solid-State Transformations of Metals and Alloys describes solidification and the industrial problems presented when manufacturing structural parts by casting, or semi-products for forging, in order to obtain large, flat or specifically shaped parts. Solidification follows the nucleation and growth model, which will also be applied in solid-state transformations, such as those taking place because of changes in solubility and allotropy or changes produced by recrystallization. It also explains the heat treatments that, through controlled heating, holding and cooling, allow the metals to have specific structures and properties. It also describes the correct interpretation of phase diagrams so the reader can comprehend the behaviour of iron, aluminium, copper, lead, tin, nickel, titanium, etc. and the alloys between them or with other metallic or metalloid elements. This book can be used by graduate and undergraduate students, as well as physicists, chemists and engineers who wish to study the subject of Metallic Materials and Physical Metallurgy, specifically industrial applications where casting of metals and alloys, as well as heat treatments are relevant to the quality assurance of manufacturing processes. It will be especially useful for readers with little to no knowledge on the subject, and who are looking for a book that addresses the fundamentals of manufacturing, treatment and properties of metals and alloys. Uses theoretical formulas to obtain realistic data from industrial operations Includes detailed explanations of chemical, physical and thermodynamic phenomena to allow for a more accessible approach that will appeal to a wider audience Utilizes micrographs to illustrate and demonstrate different solidification and transformation processes

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