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Research and Development of Rare Earth-Transition Metal Alloys as Permanent-Magnet Materials

1971
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Release : 1971
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Book Synopsis Research and Development of Rare Earth-Transition Metal Alloys as Permanent-Magnet Materials by : Alden E. Ray

Download or read book Research and Development of Rare Earth-Transition Metal Alloys as Permanent-Magnet Materials written by Alden E. Ray. This book was released on 1971. Available in PDF, EPUB and Kindle. Book excerpt: 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).

Rare Earth Permanent-Magnet Alloys’ High Temperature Phase Transformation

2014-12-01 Science
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Release : 2014-12-01
Genre : Science
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Book Rating : 881/5 ( reviews)

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Book Synopsis Rare Earth Permanent-Magnet Alloys’ High Temperature Phase Transformation by : Shuming Pan

Download or read book Rare Earth Permanent-Magnet Alloys’ High Temperature Phase Transformation written by Shuming Pan. This book was released on 2014-12-01. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Modern Permanent Magnets

2022-01-27 Technology & Engineering
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Release : 2022-01-27
Genre : Technology & Engineering
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Book Rating : 40X/5 ( reviews)

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Book Synopsis Modern Permanent Magnets by : John J. Croat

Download or read book Modern Permanent Magnets written by John J. Croat. This book was released on 2022-01-27. Available in PDF, EPUB and Kindle. Book excerpt: Modern Permanent Magnets provides an update on the status and recent technical developments that have occurred in the various families of permanent magnets produced today. The book gives an overview of the key advances of permanent magnet materials that have occurred in the last twenty years. Sections cover the history of permanent magnets, their fundamental properties, an overview of the important families of permanent magnets, coatings used to protect permanent magnets and the various tests used to confirm specifications are discussed. Finally, the major applications for each family of permanent magnets and the size of the market is provided. The book also includes an Appendix that provides a Glossary of Magnetic Terms to assist the readers in better understanding the technical terms used in other chapters. This book is an ideal resource for materials scientists and engineers working in academia and industry R&D. - Provides an in-depth overview of all of the important families of permanent magnets produced today - Includes background information on the fundamental properties of permanent magnets, major applications of each family of permanent magnets, and advances in coatings and coating technology - Reviews the fundamentals of permanent magnet design

Rapidly Solidified Neodymium-Iron-Boron Permanent Magnets

2017-10-24 Technology & Engineering
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Release : 2017-10-24
Genre : Technology & Engineering
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Book Rating : 263/5 ( reviews)

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Book Synopsis Rapidly Solidified Neodymium-Iron-Boron Permanent Magnets by : John J. Croat

Download or read book Rapidly Solidified Neodymium-Iron-Boron Permanent Magnets written by John J. Croat. This book was released on 2017-10-24. Available in PDF, EPUB and Kindle. Book excerpt: Rapidly Solidified Neodymium-Iron-Boron Permanent Magnets details the basic properties of melt spun NdFeB materials and the entire manufacturing process for rapidly solidified NdFeB permanent magnets. It covers the manufacturing process from the commercial production of the melt spun or rapidly solidified powder, to the production and properties of both isotropic bonded Nd and hot deformed anisotropic NdFeB magnets. In addition, the book discusses the development and history of bonded rare earth transition metal magnets and the discovery of the NdFeB compound, also covering melt spun NdFeB alloys and detailing the magnetization process and spring exchange theory. The book goes over the production of melt spinning development, the operation of a melt spinner, the processing of melt spun powder, commercial grades of NdFeB magnetic powder and gas atomized NdFeB magnetic powders. Lastly, the book touches on the major application and design advantages of bonded Nd Magnets. - Features a unique perspective as the author is not only the inventor of NdFeB magnetic powder, but also played a key role in developing many of the technologies covered - Provides a comprehensive look at the history, fundamental properties, production processes, design and applications of bonded NdFeB magnets - Includes discussion of the rare earth supply challenge, politics, and systems as it impacts bonded NdFeB magnets

Metallurgical Processes in Multi-Component Rare Earth-Transition Metal Permanent Magnet Alloys

1990
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Release : 1990
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Book Synopsis Metallurgical Processes in Multi-Component Rare Earth-Transition Metal Permanent Magnet Alloys by : Alden E. Ray

Download or read book Metallurgical Processes in Multi-Component Rare Earth-Transition Metal Permanent Magnet Alloys written by Alden E. Ray. This book was released on 1990. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this research has been to improve and extend the technology of 2:17 type permanent magnets. The research has proceeded by employing a model for the complex metallurgical behavior of these alloys. During the three year period of this research, we have succeeded in establishing a record value (BH)max=34 MGOe for energy product in uncompensated Sm(CouFevCuxZry)z magnets. This was achieved by increasing the Fe content to v=0.31-0.33 (28-30 at.%) while developing heat treatments to maintain the coercivity at high levels. Keywords: Permanent magnets; Rare earth-transition metal permanent magnets; R2:TM17 type rare earth magnets; Sm(Gd), Co, Fe, Cu, Zr alloys, Model for metallurgical behavior. (jes).

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