Technology Development for Transition Metal-Rare Earth High-Performance Magnetic Materials
Semiannual interim technical rept. no. 5, 1 Jul-31 Dec 1972
GENERAL ELECTRIC CORPORATE RESEARCH AND DEVELOPMENT SCHENECTADY NY
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The objective of this work is to develop the technology of high- performance transition metal-rare earth magnets for critical applications. High-performance permanent magnets are defined in this context as those having remanences greater than ten thousand gauss and permeabilities of very nearly unity throughout the second and into the third quadrants of their hysteresis loop. Such technology is to be developed through 1 studies of the origin of the intrinsic coercive force in high-anisotropy materials, 2 development of information on phase equilibria in these materials, and 3 identification and investigation of new materials. The progress that has been made during the period covered by this report is described under these three major headings.
- Electrical and Electronic Equipment
- Metallurgy and Metallography
- Electricity and Magnetism