Composite magnetic compacts and their forming methods

Details Composite magnetic compacts and their forming methods Composite magnetic compacts and their forming methods

1987-01-16

1990-08-28

Straub, Gary P.

Compositions

Magnetic

With wax, bitumen, resin, or gum

252 6255, 252 6256, 428900, 335302, 335299, 420902, 264DIG58, H02K 2106, C22B 1804, H01F 126

Patent

active

049523317

ABSTRACT:
Composite magnetic compacts having good conductivity and excellent mechanical and magnetic properties and their forming methods. The composite magnetic compacts are basically made by forming mixtures consisting essentially of 1 to 50 percent by weight of a magnetic powder and the remaining percentage of a powder of superplastic Zn-22A1 alloy. A drop in the strength of the compacts that occurs when the mixing percentage of the magnetic powder increases is made up for by the impregration of plastic in the compacts or the simpler addition of a plastic power to the mixture of the powders of magnetic material and superplastic Zn-22A1 alloy. The forming methods of the composite magnetic compacts are carried out at different temperatures and under different conditions depending on the composition of the powder mixtures and so on.

REFERENCES:
patent: 3864176 (1975-02-01), Swanson
patent: 3954515 (1976-05-01), Swanson
patent: 4004167 (1977-01-01), Meckling
patent: 4022701 (1977-05-01), Sawa et al.
patent: 4515866 (1985-05-01), Okamoto et al.
patent: 4538151 (1985-08-01), Hatakeyama et al.
patent: 4593333 (1986-06-01), Yanagi
patent: 4708847 (1987-11-01), Donomoto et al.

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