Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Heat and pressure simultaneously to effect sintering
Patent
1997-10-14
2000-02-15
Parker, Fred J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Heat and pressure simultaneously to effect sintering
419 64, 419 66, 427212, 427213, 427215, 428546, 428570, B05D 700, B22F 312
Patent
active
060249153
ABSTRACT:
A process for producing a metal-base sinter, comprising sintering coated metal particles wherein the particles are prepared for sintering by the steps of: dispersing a powder of metal core particles in a gaseous atmosphere to form a mixture of a gas and particles in a powder of highly dispersed core particles; charging a precursor for the coat forming substance that has been formed via the vapor phase and/or a precursor for the coat forming substance in a vapor-phase state and the mixture of the gas and the powder of highly dispersed core particles that have a predetermined dispersity according to the average diameter of the core particles in a coating start region of a coating space; coating the surfaces of the core particles with the coat forming substance by allowing the precursor to contact and/or impinge against the core particles; shaping and sintering the thus coated metal core particles or a mixture containing them under appropriate sintering conditions. The metal-base sinter of high performance thus produced is uniform, dense, and sintered firmly to provide a fine and highly controlled microstructure.
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Akiyama Satoshi
Fuyuki Tadashi
Hamada Yoshiaki
Kume Shoichi
Kuroda Eisuke
Agency of Industrial Science & Technology
Harrison Schnader
Nisshin Flour Milling Co. Ltd.
Parker Fred J.
Weiser Gerald J.
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