Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Powder shape or size characteristics
Patent
1989-12-18
1991-03-26
Lechert, Jr., Stephen J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Powder shape or size characteristics
419 29, 419 36, 419 37, 419 54, 419 58, B22F 100
Patent
active
050027280
ABSTRACT:
A method of manufacturing a soft magnetic Fe-Si alloy sintered product comprising a step of injection molding a composition comprising an Fe-Si powder mixture blended so as to contain from 1 to 10% by weight of Si and the substantial balance of Fe and a binder a step of applying binder-removal under heating to the resultant green body and applying a degassing and Si-diffusing; and a step of subsequently applying sintering. The sintered product is, preferably, applied with further heating for obtaining better soft magnetic property. Soft magnetic property of the sintered products is as comparable with or superior to products by conventional powder metallurgy.
REFERENCES:
patent: 4508567 (1985-04-01), Mizuno et al.
patent: 4603062 (1986-07-01), Ecer
Achikita Masakazu
Sogame Shinichi
Lechert Jr. Stephen J.
Sumitomo Metal Mining Company Ltd.
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