Author: M. J. KelleyPublisher:
ISBN:
Category : Alloys
Languages : en
Pages : 106
Book Description
Surface Composition of alloys
Author: M. J. KelleySurface Alloys and Alloy Surfaces
Author: Publisher: Elsevier
ISBN: 0080542123
Category : Technology & Engineering
Languages : en
Pages : 553
Book Description
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.
Electronic Structure of Alloys, Surfaces and Clusters
Author: Abhijit MookerjeePublisher: CRC Press
ISBN: 9780415272490
Category : Technology & Engineering
Languages : en
Pages : 396
Book Description
Understanding the electronic structure of solids is a basic part of theoretical investigation in physics. Application of investigative techniques requires the solid under investigation to be "periodic." However, this is not always the case. This volume addresses three classes of "non-periodic" solids currently undergoing the most study: alloys, surfaces and clusters. Understanding the electronic structure of these systems is fundamental not only for the basic science, but also constitutes a very important step in various technological aspects, such as tuning their stabilities, chemical and catalytic reactivities and magnetism. Expert practitioners give an up-to-date account of the field with enough detailed background so that even a newcomer can follow the development. The theoretical framework is discussed in addition to the present status of knowledge in the field. Electronic Structure of Alloys, Surfaces and Clusters also includes an extensive bibliography which provides a comprehensive reading list of work on the topic.
Surface Chemistry of Metals and Alloys
Author: Albert D. van LangeveldPublisher:
ISBN:
Category :
Languages : en
Pages : 200
Book Description
The Surface Composition of Binary Alloys
Author: Frank Lynn WilliamsElectronic Structure of Disordered Alloys, Surfaces and Interfaces
Author: Ilja TurekPublisher: Springer Science & Business Media
ISBN: 1461562554
Category : Science
Languages : en
Pages : 327
Book Description
At present, there is an increasing interest in the prediction of properties of classical and new materials such as substitutional alloys, their surfaces, and metallic or semiconductor multilayers. A detailed understanding based on a thus of the utmost importance for fu microscopic, parameter-free approach is ture developments in solid state physics and materials science. The interrela tion between electronic and structural properties at surfaces plays a key role for a microscopic understanding of phenomena as diverse as catalysis, corrosion, chemisorption and crystal growth. Remarkable progress has been made in the past 10-15 years in the understand ing of behavior of ideal crystals and their surfaces by relating their properties to the underlying electronic structure as determined from the first principles. Similar studies of complex systems like imperfect surfaces, interfaces, and mul tilayered structures seem to be accessible by now. Conventional band-structure methods, however, are of limited use because they require an excessive number of atoms per elementary cell, and are not able to account fully for e.g. substitu tional disorder and the true semiinfinite geometry of surfaces. Such problems can be solved more appropriately by Green function techniques and multiple scattering formalism.
Surface Composition of Copper-Nickel Alloys
Author: DT. LingPublisher:
ISBN:
Category : Alloy theory
Languages : en
Pages : 15
Book Description
The surface composition of alloys is of great importance in determining their chemical and catalytic properties. In this paper, a presentation is given of the application of Auger electron spectroscopy and photoemission spectroscopy to the study of the surface composition of copper-nickel alloys. An enrichment of copper in the surface region is observed for annealed surfaces. The effects of sputtering and chemisorption on the surface composition are also treated. By applying a nondestructive technique like photoemission, it has been demonstrated for the first time that there is at least one oscillation in the depth profile of the composition. This observation cannot be explained readily by the regular solution theory which, for instance, correctly predicts the copper enrichment at the surface.
Surface Alloys and Alloy Surfaces
Author: David Anthony KingPublisher:
ISBN:
Category : Medical
Languages : en
Pages : 560
Book Description
Description Surface 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 Topic The 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 Title This 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.
Theory of Determination of Surface Composition in Molten Metal Alloys by Rare Gas Scattering
Author: Jinze DaiCatalysis and Surface Properties of Liquid Metals and Alloys
Author: Yoshisada OginoPublisher: CRC Press
ISBN: 100014691X
Category : Science
Languages : en
Pages : 242
Book Description
This book presents up-to-date information about the catalysis and surface properties of liquid metals and liquid alloys. It is intended for use by chemical engineers and researchers in catalysis, surface science, liquid metals, and chemical process technologies.