Specialized metallurgical processes – compositions for use therei – Compositions – Loose particulate mixture containing metal particles
Patent
1999-05-17
2000-10-03
Mai, Ngoclan
Specialized metallurgical processes, compositions for use therei
Compositions
Loose particulate mixture containing metal particles
148513, B22F 100
Patent
active
061267112
ABSTRACT:
A raw material for powder metallurgy contains at least 0.5 vol % and at most 10 vol % of alumina powder of which the sieve fraction with a sieve opening of 30 .mu.m is at most 0.1 wt %, and a remaining part of aluminum alloy powder. The moisture content of the alumina powder is at most 0.15 wt. % with respect to the alumina powder. Agglomeration of particles is thereby minimized or avoided. Highly reliable raw material for powder metallurgy having superior fatigue strength, impact resistance and wear resistance can be obtained. A method of preparing such a mixed powder raw material involves air classifying the powder materials, dry ball mixing the materials, and then annealing the mixed powder.
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patent: 5372775 (1994-12-01), Hayashi et al.
patent: 5763109 (1998-06-01), Tabuchi et al.
"Hardness and Wear Property of SiCp Reinforced Aluminium Matrix Composite", by Fukaura et al.; Feb. 1997 in "Powder and Powder Metallurgy"; pp. 198-201.
Doi Kosuke
Fujii Kazuo
Hattori Hisao
Horimura Hiroyuki
Kaji Toshihiko
Fasse W. F.
Fasse W. G.
Honda Giken Kogyo Kabushiki Kaisha
Mai Ngoclan
Sumitomo Electric Industries Ltd.
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