Ferromagnetic powder for dust cores, dust core, and dust core fa

Details Ferromagnetic powder for dust cores, dust core, and dust core fa Ferromagnetic powder for dust cores, dust core, and dust core fa

1999-07-29

2000-11-21

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75252, 75246, 148104, 148306, 252 6253, 252 6254, 419 66, B22F 302

Patent

active

061497045

ABSTRACT:
A dust core ferromagnetic powder comprises a ferromagnetic metal powder, an insulating material, and a lubricant. The insulating material comprises a phenol resin and/or a silicone resin, and the lubricant comprises at least one compound selected from the group consisting of magnesium stearate, calcium stearate, strontium stearate, and barium stearate. It is possible to achieve a dust core having high saturation magnetic flux density, low losses, and satisfactory permeability with its dependence on frequency being improved.

REFERENCES:
patent: 4184972 (1980-01-01), Pevzner et al.
patent: 4308155 (1981-12-01), Tada et al.
patent: 5039559 (1991-08-01), Sang et al.
patent: 5651841 (1997-07-01), Moro et al.
patent: 5702630 (1997-12-01), Sasaki et al.
patent: 5800636 (1998-09-01), Tsukada et al.
patent: 5980603 (1999-11-01), Thomas et al.

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