Rare Earth Permanent Magnet Alloys High Temperature Phase Transformation
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Author | : Shuming Pan |
Publisher | : Springer |
Total Pages | : 290 |
Release | : 2014-12-01 |
Genre | : Science |
ISBN | : 3642363881 |
The process of high temperature phase transition of rare earth permanent-magnet alloys is revealed by photographs taken by high voltage TEM. The relationship between the formation of nanocrystal and magnetic properties is discussed in detail, which effects alloys composition and preparation process. The experiment results verified some presumptions, and were valuable for subsequent scientific research and creating new permanent-magnet alloys. The publication is intended for researchers, engineers and managers in the field of material science, metallurgy, and physics. Prof. Shuming Pan is senior engineer of Beijing General Research Institute of Non-ferrous Metal.
Author | : Alden E. Ray |
Publisher | : |
Total Pages | : 44 |
Release | : 1971 |
Genre | : |
ISBN | : |
Intermetallic phases with the formulas R2Co17, R2Fe17, and R2(Co1-xFex)17 are of potential interest as permanent magnets. Procedures for the preparation of these intermetallic phases are described. Descriptions are given of the design and operation of differential thermal analysis equipment and of a high temperature-high vacuum furnace for the metallurgical and magnetic evaluation of rare earth-transition metal intermetallic phases. (Author).
Author | : G.H.M. Koper |
Publisher | : Springer Science & Business Media |
Total Pages | : 162 |
Release | : 2012-12-06 |
Genre | : Technology & Engineering |
ISBN | : 9401136688 |
The present study complements the study on patents, patent applications and other literature on rare earth metals based permanent magnets by Frits Andriessen and Marten Terpstra, published by Elsevier Applied Science in 1989, and complements in part the book on Nd-Fe permanent magnets edited by LV. Mitchell, which was the result of a workshop organized by the Commission of the European Communities and held in Brussels on 25 October 1984. The difference between the content of the first book and that of the present study is that the first is more specifically directed to various kinds and compositions of alloys used in newly developed magnets, while the present book emphasises the improvements obtained when using particular alloys. The study edited by Mitchell deals more specifically with the economic, physical and chemical aspects of rare earth metals based magnet alloys, their properties compared with the more common and classical magnets such as ferro-cobalt alloy magnets, and their applications to various fields of technology. From the present study it has become apparent that there exist only a few patents and patent applications covering a specific use of particular magnets having specific properties to a circuit, arrangement, device or electric motor. This appears to be due to the fact that every manufacturer of such circuits or arrangements applying magnets naturally wants to employ the most effective magnets.
Author | : K.H.J. Buschow |
Publisher | : Trans Tech Publications Ltd |
Total Pages | : 90 |
Release | : 1999-01-10 |
Genre | : Technology & Engineering |
ISBN | : 3035705887 |
Permanent magnets play an increasingly important role in modern society because they are vital components of numerous domestic and industrial devices. The last few decades have witnessed a quite extraordinary development in the use of hard magnetic materials, especially after the advent of rare earth permanent magnets. The rare earth permanent magnets are unequalled because they combine a high magnetization with an extraordinary magnetic hardness which allows the use of such magnets having the extreme shapes and small dimensions as required in modern devices.
Author | : Ekkes H. Brück |
Publisher | : Elsevier |
Total Pages | : 216 |
Release | : 2020-11-29 |
Genre | : Technology & Engineering |
ISBN | : 0128210249 |
Handbook of Magnetic Materials, Volume 29, highlights new advances in the field, with this new volume presenting interesting chapters written by an international board of authors on topics such as spin-orbit torque. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in the Handbook of Magnetic Materials series
Author | : |
Publisher | : |
Total Pages | : 872 |
Release | : 1988 |
Genre | : Power resources |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 680 |
Release | : 1976 |
Genre | : Nuclear energy |
ISBN | : |
Author | : Changzhen Wang |
Publisher | : Springer Nature |
Total Pages | : 369 |
Release | : 2023-05-18 |
Genre | : Technology & Engineering |
ISBN | : 9811941785 |
This book starts with a theoretical introduction of the rare earth materials, and it subsequently analyzes the essential characteristics of these materials from elements, compounds to physical chemistry and metal materials, etc. Under the supplementary explanation of experimental data and results, the research is gradually guided into the multi-domain application scene. Through extensive analyses, this book displays comprehensively the distinguished values of the rare earth materials and the theoretical, empirical, and practical significance of rare earth materials is unraveled. It also covers an exhaustive review of 17 rare earth elements, their characteristics, and more possibilities in physical chemistry, functional materials, metallurgy, composites and engineering, and their prospects in production and technical applications. In-depth account of the whole spectrum of rare earth material research makes this book a unique reference to academic researchers, students, and engineers.
Author | : A. E. Ray |
Publisher | : |
Total Pages | : 11 |
Release | : 1987 |
Genre | : |
ISBN | : |
A primary objective of this research has been to test and refine a model to describe the metallurgical behavior of Sm(Co, Fe, Cu, Zr) alloys and the complex relationships between the compositions, heat treatments, microstructures and compositions of the phase observed, and the corresponding magnetic properties developed by the alloys. A second objective was to develop laboratory techniques and procedures for the processing of 2:17 type permanent magnet in order to be reasonably confident that observed variations in the magnetic and other physical properties measured would reflect intentional changes in compositional and heat treating parameters. A third objective of developing higher energy product 2:17 type permanent magnets than were known at the beginning of the research effort was not accomplished. Keywords: Magnets, Permanent Magnet Alloys Rare Earths, Magnetic Fields, Alloys, Samarian, Cobalt, Iron, Copper Zirconium.
Author | : S. G. Sankar |
Publisher | : |
Total Pages | : 592 |
Release | : 1990 |
Genre | : Anisotropy |
ISBN | : |