Bonded permanent magnets: Current status and future opportunities (invited)
- Technology and Permanent Magnets, The Arnold Engineering Company, Marengo, Illinois 60152 (United States)
- The Arnold Engineering Company, Marengo, Illinois 60152 (United States)
Permanent magnets play a vital role in modern society as a component in a wide range of devices utilized by many industries and consumers. In 1995, the world production of permanent magnets was estimated to be valued at {dollar_sign}3.6 billion and growing at an annual rate of 12{percent}. Bonded permanent magnets are the fastest growing segment of this market. Bonded magnet technology enables a wide variety of magnetic powders to be combined with several polymer and binder systems to produce magnetic components utilizing several processing options. In this article, we review the development of bonded magnet technology. The major classes of magnetic powders, binder systems, and processing technologies are described. Recent developments in magnetic material grades, e.g., anisotropic NdFeB, rare earth lean NdFeB, SmFe(N,C) are outlined. The current status of processing and binder options aimed at increasing the upper application temperature limit of these materials is highlighted. Finally, the improvements and future opportunities for bonded magnets are discussed. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 496523
- Report Number(s):
- CONF-961141-; ISSN 0021-8979; TRN: 97:016216
- Journal Information:
- Journal of Applied Physics, Vol. 81, Issue 8; Conference: 41. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 12-15 Nov 1996; Other Information: PBD: Apr 1997
- Country of Publication:
- United States
- Language:
- English
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