C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 1/04 (2006.01) C22C 33/02 (2006.01)
Patent
CA 2069700
A mixed powder for powder metallurgy comprising a Fe powder and an alloy powder mixed together in which the mean particle size and the solidus line temperature of the alloy powder and the amount of the liquid phase formed during sintering are so defined as to attain most suitable sintering behavior, that is, the mean particle size of the alloy powder is smaller than 20 µm, the solidus line temperature of the alloy powder is set to higher than 950°C and lower than 1300°C and the amount of the liquid phase formed during sintering is more than 20%. A sintered product having desired properties can be obtained by using the mixed powder described above.
L'invention concerne un mélange de poudre métallurgique constitué de poudre de Fe et d'une poudre d'alliage, dans lequel la taille moyenne des particules et la température Solidus de la poudre d'alliage ainsi que la quantité de la phase liquide formée au cours du frittage sont définies de manière à obtenir le comportement de frittage le plus approprié, c'est-à-dire que la taille moyenne de particules de la poudre d'alliage est inférieure à 20 m, la température Solidus de la poudre d'alliage est fixée à plus de 950 C et à moins de 1 300 C et la quantité de phase liquide formée au cours du frittage est supérieure à 20 %. Un produit fritté ayant les propriétés voulues peut être obtenu en utilisant le mélange de poudre décrit ci-dessus.
Kabushiki Kaisha Kobe Seiko Sho
Riches Mckenzie & Herbert Llp
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