Method of making anisotropic permanent magnets of mn-al-c...

Details Method of making anisotropic permanent magnets of mn-al-c... Method of making anisotropic permanent magnets of mn-al-c...

H - Electricity

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H01F 1/04 (2006.01) C22C 28/00 (2006.01) C22F 1/16 (2006.01)

Patent

CA 1053546

METHOD OF MAKING ANISOTROPIC PERMANENT MAGNETS OF Mn-Al-C ALLOYS Abstract of the Disclosure Anisotropic permanent magnets of Mn-Al-C polycry- stalline alloy are produced by warm extrusion at a temperature of 530°C to 830°C utilizing converging or tapered dies with lubricant interposed between the polycrystalline body and the converging die. With dies of rather small semiangles, alloys with improved magnetic properties with regard to (BH)max, and especially Br are obtained.

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