Oxidation resistant compositions for use with rare earth magnets

Details Oxidation resistant compositions for use with rare earth magnets Oxidation resistant compositions for use with rare earth magnets

1989-02-21

1989-09-26

Marquis, Melvyn I.

Stock material or miscellaneous articles

Composite

Of epoxy ether

428413, 428450, 524779, 524785, 524780, 524401, 524434, 524435, 524431, 524403, 525523, 528 38, B32B 1508

Patent

active

048699640

ABSTRACT:
Oxidation of rare earth magnetic materials and powders thereof are greatly reduced when coated with a binary or a ternary composition made from (a) at least one amino containing silane compound such as an aminosilane or a polyaminosilane, or (b) at least one epoxy resin, or (c) an epoxy silane compound. The composition is utilized to coat rare earth magnet or magnet materials or in association with a binder to form a matrix substantially encapsulating the same.

REFERENCES:
patent: 3220878 (1965-11-01), Pines
patent: 3247280 (1966-04-01), Kanner
patent: 3602078 (1986-07-01), Joseph et al.
patent: 3868342 (1975-02-01), Magne
patent: 4241116 (1980-12-01), Taniyama et al.
patent: 4287326 (1981-09-01), Mikami
patent: 4474930 (1984-10-01), Mikami et al.
patent: 4558077 (1985-12-01), Gray
patent: 4559387 (1985-12-01), Kuniya
Effects of Surface Treatment for Thermoplastic Magnet by Satoh, et al., IEEE Translation Journal on Magnetics in Japan, Vol. TJMJ-1, No. 3, June, 1985, pages 387 and 388.
Thermoplastic Magnet Having High Improved Heat-Resistance by Satoh, et al., IEEE Translation Journal on Magnets in Japan, Vol. TJMJ-1, No. 8, Nov., 1985.
Julius Grant, Ed. Hackh's Chemical Dictionary (N.Y., McGraw-Hill Book Co., 1972), page 25.

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