Author: Sten SamsonPublisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
Structural Principles of Complex Intermetallic Compounds
Author: Sten SamsonStructural principles of complex intermetallic compounds
Author: Sten SamsonIntermetallics
Author: Walter SteurerPublisher: Oxford University Press
ISBN: 0198714556
Category : Science
Languages : en
Pages : 583
Book Description
The fascinating world of intermetallics is largely unexplored. There are many exciting physical properties and important technological applications of intermetallics, from magnetism to superconductivity. The main focus of this book is on the statistics, topology and geometry of crystal structures and structure types of intermetallic phases. The underlying physics, in particular chemical bonding, is discussed whenever it helps understand the stability of structures and the origin of their physical properties. The authors' approach, based on the statistical analysis of more than twenty thousand intermetallic compounds in the data base Pearson's Crystal Data, uncovers important structural relationships and illustrates the relative simplicity of most of the general structural building principles. It also shows that a large variety of actual structures can be related to a rather small number of aristotypes. The text aims to be readable and beneficial in one way or another to everyone interested in intermetallic phases, from graduate students to experts in solid state chemistry and physics, and materials science. For that purpose it avoids the use of enigmatic abstract terminology for the classification of structures. Instead, it focuses on the statistical analysis of crystal structures and structure types in order to draw together a larger overview of intermetallics, and indicate the gaps in it - areas still to be explored, and potential sources of worthwhile research. The text should be read as a reference guide to the incredibly rich world of intermetallic phases.
Intermetallic Compounds: Principles
Author: Jack Hall WestbrookPublisher:
ISBN:
Category : Alloys
Languages : en
Pages : 1178
Book Description
Intermetallic Compounds, Basic Mechanical Properties and Lattice Defects of
Author: J. H. WestbrookPublisher: Wiley
ISBN: 9780471611752
Category : Technology & Engineering
Languages : en
Pages : 284
Book Description
This volume is one of four, each of which consists of reprinted chapters from the highly acclaimed, comprehensive two-volume set Intermetallic Compounds: Principles and Practice, published in 1995. In some cases the author or authors have added a brief addendum to bring their chapter up to date and in other cases more recent references have been added. Chapters have been selected and grouped in subject areas to provide more easily accessible and user-friendly volumes for individual researchers. The other titles in this four-volume set are: Crystal Structures of Intermetallic Compounds Structural Applications of Intermetallic Compounds Magnetic, Electrical and Optical Properties and Applications of Intermetallic Compounds
Intermetallic Compounds
Author: Jack Hall WestbrookPublisher:
ISBN:
Category : Alloys
Languages : en
Pages : 1102
Book Description
This third volume continues to set the standard in the field, as originally defined by the best-selling two-volume set 'Intermetallic Compounds - Principles and Practice'. With contributions from 72 authors from 14 different countries, this book introduces a broad range of new topics including: new intermetallic families, new means of assessment of bonding and stability, new properties and phenomena, new applications, new practical processes and new research techniques. * Stand-alone chapters set out in a manner that is meaningful to non-specialists, progressing to include knowledge useful to experts * New, fully revised, and updated chapters on areas of intense research activity or great importance * Providing definitions of intermetallic families, intended to assist all readers * Written for clarity, consistency and thoroughness * Full and up-to-date referencing to the literature * Critical assessments of the state of the subject * Acronym list consolidating new entries with those compiled for the two earlier volumes As with Volumes 1 and 2, this is an invaluable aid to both scientists and engineers. Core reading for those who are starting research on intermetallics, and for those who wish to exploit the unique properties of intermetallics in practical applications.
Intermetallic Compounds
Author: J. H. WestbrookPublisher: Wiley-Blackwell
ISBN:
Category : Science
Languages : en
Pages : 288
Book Description
An intermetallic compound is one consisting of two or more metallic elements present in definite proportions in alloy. They are used in a wide range of industries such as semiconductors and the aerospace industry. Thousands of tons of the nickel aluminum alloy are used worldwide every year.
From Structural Complexity to Structure-property Relationships in Intermetallics
Author: Joshua EngelkemierPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The unparalleled structural diversity of intermetallic compounds provides nearly unlimited poten-tial for the discovery and optimization of materials with useful properties, such as thermoelectricity, superconductivity, magnetism, hydrogen storage, superelasticity, and catalysis. This same diversity, however, creates challenges for understanding and controlling the unpredictable structure of interme-tallic phases. Moreover, the fundamental design principles that have proven so powerful in molecular chemistry do not have simple analogues for metallic, solid state materials. One of these basic principles is the concept of atomic size effects. Especially in densely packed crys-tal structures where the need to fill space is in competition with the atoms' preferences for ideal intera-tomic distances, substitution of one element in a compound for another with similar chemical proper-ties yet different atomic size can have dramatic effects on the ordering of the atoms (which in turn af-fects the electronic structure, vibrational properties, and materials properties). But because the forces that hold metallic phases together are less easily understood from a local perspective than covalent or ionic interactions in other kinds of materials, it is usually unclear whether the atoms are organized to optimize stabilizing, bonding interactions or rather forced to be close together despite repulsive, steric interactions. This dissertation details the development of a theoretical method, called Density Functional Theo-ry-Chemical Pressure (DFT-CP) analysis, to address this issue. It works by converting the distribution of total energy density from a DFT calculation into a map of chemical pressure through a numerical ap-proximation of the first derivative of energy with respect to voxel volume. The CP distribution is then carefully divided into contact volumes between neighboring atoms, from which it is possible to deter-mine whether atoms are too close together (positive CP) or too far away from each other (negative CP). This technique is used in combination with the concept of structural plasticity (Berns, 2014) to demonstrate how complex intermetallic phases can be understood as a response of simpler structure types to the destabilizing buildup of CP. From this point of view, interfaces created in complex struc-tures relieve the CP manifest in the more basic, parent structures. This is shown specifically for Ca36Sn23 relative to a hypothetical W5Si3-type Ca5Sn3 phase, LnMn[x]Ga3 (Ln = Ho-Tm, x
Structural and Electronic Investigations of Complex Intermetallic Compounds
Author: Hyunjin KoProperties And Applications Of Complex Intermetallics
Author: Esther Belin-ferrePublisher: World Scientific
ISBN: 981446838X
Category : Science
Languages : en
Pages : 458
Book Description
Complex metal alloys (CMAs) comprise a huge group of largely unknown alloys and compounds, where many phases are formed with crystal structures based on giant unit cells containing atom clusters, ranging from tens of to more than thousand atoms per unit cell. In these phases, for many phenomena, the physical length scales are substantially smaller than the unit-cell dimension. Hence, these materials offer unique combinations of properties which are mutually exclusive in conventional materials, such as metallic electric conductivity combined with low thermal conductivity, good light absorption with high-temperature stability, high metallic hardness with reduced wetting by liquids, etc.This book is the second of a series of books issued yearly as a deliverable to the European Community of the School established within the European Network of Excellence CMA. Written by reputed experts in the fields of metal physics, surface physics, surface chemistry, metallurgy, and process engineering, this book brings together expertise found inside as well as outside the network to provide a comprehensive overview of the current state of knowledge in CMAs.