Factors affecting coercivity in rare-earth based advanced permanent magnet materials

Technical Report · Sat Feb 01 00:00:00 EST 1997

DOI:https://doi.org/10.2172/432961· OSTI ID:432961

Lewis, L H ^[1]; Sellers, C H ^[2]; Panchanathan, V ^[3]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Lockheed Idaho Technologies Co., Idaho Falls, ID (United States)
3. Magnequench International, Inc., Anderson, IN (United States)

The relationships that link microstructural properties of advanced permanent magnet materials with magnetic properties such as the coercivity are often difficult to quantify, especially in materials with nano-scale structures. Recent work on RE{sub 2}Fe{sub 14}B-based powders fabricated with rapid-solidification techniques such as inert gas atomization (IGA) and melt-spinning provide insight into the nanostructural features which affect the acquisition and stability of coercivity. In all cases the coercivity is found to be a function of both the scale of the constituent microstructure and of the presence and distribution of minor phases.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016; AC07-94ID13223
• OSTI ID: 432961
• Report Number(s): BNL-63508; CONF-970201-5; ON: DE97001556; TRN: AHC29704%%77
• Resource Relation: Conference: 126. annual meeting of the Minerals, Metals and Materials Society, Orlando, FL (United States), 9-13 Feb 1997; Other Information: PBD: [1997]
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MICROSTRUCTURE
MAGNETIC PROPERTIES
NEODYMIUM ALLOYS
IRON BASE ALLOYS
BORON ALLOYS
PERMANENT MAGNETS
MAGNETIC MATERIALS
EXPERIMENTAL DATA
COERCIVE FORCE