Powdered iron core magnetic devices

Details Powdered iron core magnetic devices Powdered iron core magnetic devices

1985-09-20

1986-07-22

Sheehan, John P.

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

148 3155, 148105, 428403, 428570, 427127, 427216, B22F 100

Patent

active

046017534

ABSTRACT:
A compacted powdered iron core utilizes iron powder in the 0.002 to 0.006 mean particle size range which is firt coated with an alkali metal silicate and then overcoated with a silicone resin polymer. The treated powder is compressed to approximately 94% of theoretical density and then annealed at approximately 600.degree. C. This results in a core component characterized by overall core losses as low as in conventional laminated cores in A.C. operation.

REFERENCES:
patent: 3245841 (1966-04-01), Clarke
patent: 3725521 (1973-04-01), Ebling
patent: 3917976 (1975-11-01), Nuckolls
patent: 4177089 (1979-12-01), Bankson
patent: 4227166 (1980-10-01), Tsuji et al.
patent: 4543208 (1985-09-01), Horie et al.

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