Magnetic powder compacts

Details Magnetic powder compacts Magnetic powder compacts

1985-09-06

1986-07-29

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

419 23, 419 25, 419 38, 419 39, 419 37, 419 57, B22F 300

Patent

active

046029575

ABSTRACT:
A magnetic powder core, suitable for use in a low frequency power device, is prepared by a method including the steps of coating an atomized iron powder from an aqueous solution of potassium dichromate, drying the powder, compressing the powder to form a compact and heat treating the compact until it becomes partially sintered. Cores having coercivities below 240.sup.A /m, saturation inductions exceeding 1.3 Tesla and resistivities exceeding 500 microhm cm are disclosed.

REFERENCES:
patent: 1403305 (1922-01-01), Elmer
patent: 1523109 (1925-01-01), Elmer
patent: 3884729 (1975-05-01), Jackson et al.
patent: 4261745 (1981-04-01), Watanabe
"The Magnetic Circuit," by A. E. De Barr, The Institute of Physics, London, England, 1953, pp. 19-24.

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