Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Metal and nonmetal in final product
Patent
1989-06-22
1991-06-25
Lechert, Jr., Stephen J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Metal and nonmetal in final product
419 27, 419 38, 419 66, 148101, B22F 326
Patent
active
050265180
ABSTRACT:
The invention relates to a method of making permanent magnets, especially rare-earth ion permanent magnets composed of compacted Fe-B-R type alloy particles. Accordingly, the method provides compacting the magnetic particles into a desired shape having voids between some of the compacted particles. The voids between the particles are filled with a sealing agent and the compact is further coated with either an organic coating or metallic coating.
REFERENCES:
patent: 3892600 (1975-07-01), Smeggil et al.
patent: 3892601 (1975-07-01), Smeggil et al.
patent: 3998669 (1976-12-01), Strnat
patent: 4063971 (1977-12-01), Greinacher et al.
patent: 4289549 (1981-09-01), Kasai
patent: 4558077 (1985-12-01), Gray
patent: 4626371 (1986-12-01), Ikenaga et al.
patent: 4684406 (1987-08-01), Matsuura et al.
patent: 4689163 (1987-08-01), Yamashita et al.
patent: 4734131 (1988-03-01), Arai et al.
patent: 4792367 (1988-12-01), Lee
patent: 4826546 (1989-05-01), Yamamoto et al.
patent: 4834812 (1989-05-01), Ghandehari
patent: 4863805 (1989-09-01), Suzuki et al.
Patent Abstracts of Japan, vol. 9, No. 185 (E-332) [1908], Jul. 31, 1985.
Patent Abstracts of Japan, vol. 9, No. 197 (E-335) [1920], Aug. 14, 1985.
Patent Abstracts of Japan, vol. 6, No. 144 (E-122) [1022], Aug. 3, 1982.
Kishi Matsuo
Muraishi Katsuyoshi
Ogawa Ken-ichi
Suzuki Teruo
Takashio Hiroshi
Adams Bruce L.
Bhat Nina
Lechert Jr. Stephen J.
Seiko Instruments Inc.
Wilks Van C.
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