Method of making permanent magnets

Details Method of making permanent magnets Method of making permanent magnets

1975-07-23

1977-12-20

White, Robert F.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148 3157, 264 22, 264 24, 264111, 264115, 264104, 252 6254, 252 6255, H01F 102

Patent

active

040639703

ABSTRACT:
Method of making an anisotropic permanent magnetic body which has a (B.H).sub.max of at least 1.4 .times. 10.sup.6 Gauss . Oersted and a remanence of at least 2500 Gauss, utilizes magnetic powder particles having a coercivity .sub.J H.sub.C at least equal to the actual remanence B.sub.r of the finally prepared magnetic body, a remanence 4.pi.J.sub.r equal to about 1.3 to 1.6 of the actual remanence B.sub.r of the finally produced magnetic body and a fullness factor ##EQU1## which is at least 0.6.

REFERENCES:
patent: 1669648 (1928-05-01), Bandur
patent: 2979401 (1961-04-01), Szymaszek
patent: 3216074 (1965-11-01), Harrison
patent: 3663317 (1972-05-01), Westendorp et al.

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