Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Patent
1995-11-29
1999-08-24
Bell, Bruce F.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having metal particles
428548, 428551, 428552, 428564, 428565, 75235, 75236, 75244, 75245, 75246, 75248, B22F 300
Patent
active
059435461
ABSTRACT:
A disclosed gradient function material is produced by molding and thereafter firing a slurry which contains a plurality of groups of particles having different specific gravities. The plurality of groups of particles include at least a first group of particles and a second group of particles. The first group of particles comprises a group of non-metal particles having a specific gravity ranging from about 3 to 7 and a maximum particle diameter equal to or smaller than a deflocculation limit, said non-metal particles being made of one or more materials selected from the group consisting of an oxide, a carbide, a nitride, and an oxynitride. The second group of particles comprises a group of metal particles having a specific gravity which is about 1.5 times the specific gravity of said first group of particles, and particle diameters distributed across the deflocculation limit. The gradient function material is manufactured by preparing a slurry containing a plurality of groups of particles and/or a plurality of slurries, and supplying the slurry or slurries into a porous mold to form a deposited region in the porous mold initially primarily influenced by way of attraction of the porous mold and subsequently primarily influenced by a deflocculating effect of the particles in the slurry or slurries or under the influence of the gravity.
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Hayashi Koichi
Ishibashi Hirotaka
Nagayama Hiroyuki
Bell Bruce F.
Blackman William D.
Carrier Joseph P.
Toto Ltd.
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