Fe-cr-co permanent magnet alloy and alloy processing

C - Chemistry – Metallurgy – 21 – D

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C21D 8/12 (2006.01) C22C 38/30 (2006.01) H01F 1/04 (2006.01)

Patent

CA 1130179

1 JIN, S. 2 Fe-Cr-Co PERMANENT MAGNET ALLOY AND ALLOY PROCESSING Abstract of the Disclosure Fine-grained Fe-Cr-Co magnetic alloys are disclosed which have desirable magnetic properties such as, in particular, a coercive force in the range of 300- 600 Oersted, a remanence in the range of 8000-13000 Gauss, and a maximum energy product in the range of 1-6 MGOe. Disclosed alloys consist essentially of 25-29 weight percent Cr, 7-12 weight percent Co, and remainder iron; processing of disclosed alloys may typically include low- temperature solution annealing, cold shaping, and an aging heat treatment. Disclosed magnetic alloys may be used, e.g., in the manufacture of ringers, relays, and electro- acoustic transducers.

328510

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