Equivalent Crystal Theory Of Alloys
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Equivalent Crystal Theory of Alloys
Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 26 |
Release | : 2018-07-02 |
Genre | : |
ISBN | : 9781722206673 |
Equivalent Crystal Theory (ECT) is a new, semi-empirical approach to calculating the energetics of a solid with defects. The theory has successfully reproduced surface energies in metals and semiconductors. The theory of binary alloys to date, both with first-principles and semi-empirical models, has not been very successful in predicting the energetics of alloys. This procedure is used to predict the heats of formation, cohesive energy, and lattice parameter of binary alloys of Cu, Ni, Al, Ag, Au, Pd, and Pt as functions of composition. The procedure accurately reproduces the heats of formation versus composition curves for a variety of binary alloys. The results are then compared with other approaches such as the embedded atom and lattice parameters of alloys from pure metal properties more accurately than Vegard's law is presented. Bozzolo, Guillermo and Ferrante, John Glenn Research Center RTOP 505-90-51...
Determination of Parameters of a New Method for Predicting Alloy Properties
Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 28 |
Release | : 2018-08-16 |
Genre | : |
ISBN | : 9781725643970 |
Recently, a semiempirical method for alloys based on equivalent crystal theory was introduced. The method successfully predicts the concentration dependence of the heat of formation and lattice parameter of binary alloys. A study of the parameters of the method is presented, along with new results for (gamma)Fe-Pd and (gamma)Fe-Ni alloys. Bozzolo, Guillermo and Ferrante, John Glenn Research Center NASA-TM-105895, E-7361, NAS 1.15:105895 RTOP 505-90-53...
The Theory of the Properties of Metals and Alloys
Author | : Sir Nevill Francis Mott |
Publisher | : Courier Dover Publications |
Total Pages | : 380 |
Release | : 1958 |
Genre | : Science |
ISBN | : |
Quantum methods develop mathematical models: crystal structure, magnetic susceptibility, electrical and optical properties, thermal properties, etc. Unabridged republication of the original (1936) edition.
The Theory of Transformations in Metals and Alloys
Author | : John Wyrill Christian |
Publisher | : |
Total Pages | : 1000 |
Release | : 1965 |
Genre | : Physical metallurgy |
ISBN | : |
Solidification and Crystallization Processing in Metals and Alloys
Author | : Hasse Fredriksson |
Publisher | : John Wiley & Sons |
Total Pages | : 837 |
Release | : 2012-07-02 |
Genre | : Technology & Engineering |
ISBN | : 1119978327 |
Solidification and Crystallization Processing in Metals and Alloys Hasse Fredriksson KTH, Royal Institute of Technology, Stockholm, Sweden Ulla Ã…kerlind 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.
Surface Alloys and Alloy Surfaces
Author | : |
Publisher | : Elsevier |
Total Pages | : 553 |
Release | : 2002-08-21 |
Genre | : Technology & Engineering |
ISBN | : 0080542123 |
DescriptionSurface Alloys and Alloy Surfaces is concerned with the structural, compositional, electronic and chemical properties of the surfaces of solids in which the surface layers, at least are alloyed. Two different categories of system are covered - the surfaces of bulk alloys (alloy surfaces) and surface phases in which one or more outermost atomic layers are alloyed, while the underlying bulk involves no such intermixing (surface alloys).Importance of TopicThe surfaces of bulk alloys have long been known to be of practical interest for their chemical properties. It has also long been known that the surface composition of such alloys commonly differs from that of the underlying bulk. However, our understanding of these chemical and physical phenomena is far from complete and the application of surface science methods to investigate these phenomena is a manifestation of a general trend to study the surfaces of increasing complexity. Surface alloy formation, as a much more recently recognized phenomenon deserves more attention.Why This TitleThis title is important as it provides new insights into a mixture of new and old problems. It is the first to cover the important mixture of material on surface alloys and alloy surfaces. Each chapter is written by experts in different areas of these two interrelated topics, covering theory and experiment, physics and chemistry, geometrical and electronic structure. The coverage of the surface alloy topic is especially novel as it is relatively newly-recognised as quite a common phenomenon.