Process for producing alloy, alloy and alloy containing sheets m

Details Process for producing alloy, alloy and alloy containing sheets m Process for producing alloy, alloy and alloy containing sheets m

1997-03-04

2000-11-07

Wyszomierski, George

Metal treatment

Stock

Magnetic

148314, 252 6254, 252 6255, G11B 5706

Patent

active

06143096&

ABSTRACT:
A powdery alloy mainly composed of Mn--Bi having particle diameter of 5 .mu.m or less which has a magnetic anisotropy of 6000 Oe or more in coercive force and 35 emu/g or more in saturation magnetization, wherein the size of crystallite according to Scheler's formula is 700 .ANG. or less; and an alloy containing sheet of 0.5 to 10 .mu.m thickness in which a powdery alloy mainly composed of Mn--Bi having particle diameter of 5 .mu.m or less which has a magnetic anisotropy of 6000 Oe or more in coercive force and 35 emu/g or more in saturation magnetization is bound with a binder into a sheet of 0.5 to 10 .mu.m thickness in a state magnetically oriented toward said direction of magnetic anisotropy, wherein when said sheet is measured toward said magnetic anisotropy direction at 16 kOe and 5 kOe, the ratio of residual magnetic flux density Mr16k and Mr5k (Mr5k/Mr16k) is 0.85 or more.

REFERENCES:
patent: 4784703 (1988-11-01), Pirich et al.
patent: 5648160 (1997-07-01), Kishimoto et al.
"Atomization", Metals Handbook, 9th Ed., vol. 7, pp. 25-39, 1984.

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