Title :
Application-oriented characterization of Sm2(Co,Fe,Cu,Zr)17 permanent magnets
Author :
Liu, Sam ; Hoffman, Eugene P.
Author_Institution :
Magnetics Lab., Dayton Univ., OH, USA
fDate :
9/1/1996 12:00:00 AM
Abstract :
Application-oriented characterizations were carried out for Sm2(Co,Fe,Cu,Zr)17 permanent magnets in which both high temperature effects and aging effects are taken into account. Experimental results indicate that application-oriented characterization may provide data more application-oriented than traditional high temperature aging test data. The irreversible loss of the maximum energy product of Sm2(Co,Fe,Cu,Zr)17 caused from thermal demagnetization increases rapidly with temperature. It should be possible to reduce this loss by optimizing magnet compositions and heat treatments, which would significantly improve the high temperature performance of Sm2(Co,Fe,Cu,Zr)17 magnets
Keywords :
ageing; cobalt alloys; copper alloys; demagnetisation; ferromagnetic materials; heat treatment; high-temperature effects; iron alloys; magnetic leakage; magnetisation; permanent magnets; samarium alloys; zirconium alloys; 0 to 3000 hour; 20 to 600 C; Sm2(Co,Fe,Cu,Zr)17 permanent magnets; Sm2(CoFeCuZr)17; aging effects; application-oriented characterization; heat treatments; high temperature effects; high temperature performance; irreversible loss; magnet composition optimization; maximum energy product; thermal demagnetization; vibrating sample magnetometer; Aerospace materials; Aging; Aircraft; Demagnetization; Magnetic flux; Magnetic materials; Magnetic properties; Permanent magnets; Samarium; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
