Hard magnetic material

Details Hard magnetic material Hard magnetic material

C - Chemistry, Metallurgy

22

C

75/2, 148/7

C22C 1/04 (2006.01) H01F 1/055 (2006.01)

Patent

CA 1037293

Abstract Bulk hardened magnetic materials with compositions expressed by a general formula SmuCe1-u(Co1-x-yFexCuy)z are provided. Compositions in the limited range of 0.3?u?1.0, 0?x?0.1, 0.09?y?0.18, 6.0?z?7.5 lead to magnetic materials with unexpectedly large maximum energy product and with a newly found two phase structure. Magnetic materials with maximum energy product of over 13 Mg.Oe (megagauss oersted), residual induction over 7000 G and intrinsic coercive force over 3000 Oe are obtained by subjecting the compositions to a sintering process.

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