Permanent magnet alloy

Details Permanent magnet alloy Permanent magnet alloy

1983-12-23

1986-01-21

Sheehan, John P.

Metal treatment

Compositions

Heat treating

420435, 420582, C04B 3500

Patent

active

045655871

ABSTRACT:
A permanent magnet of R.sub.2 Co.sub.17 type crystal structure consisting essentially of, in percent by weight, at least one rare earth element within the range of 24 to 28, cobalt within the range of 48 to 53, copper within the range of 2 to 4.9, iron within the range of 18 to 30 and zirconium within the range of 1.7 to 3.0. By substituting zirconium for a portion of copper an optimum combination of coercive force and residual magnetization (saturation induction) may be achieved.

REFERENCES:
patent: 4210471 (1980-07-01), Yoneyama et al.
patent: 4213802 (1982-07-01), Rothwarf et al.
patent: 4369075 (1983-01-01), Nobuo et al.

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