Method for manufacturing rhenium-containing alloy powder and...

B - Operations – Transporting – 22 – F

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B22F 9/22 (2006.01) C22C 19/03 (2006.01) C22C 27/00 (2006.01)

Patent

CA 2563856

Metal particles that can be alloyed with rhenium are dispersed as a main component in a gas phase, a rhenium oxide vapor is made to be present around these particles, the rhenium oxide is reduced, and the rhenium precipitated on the surface of the main component metal particles as a result of this reduction is diffused under a high temperature into the main component metal particles, which gives a rhenium-containing alloy powder including the main component metal and rhenium. The powder thus obtained preferably contains 0.01 to 50 wt% rhenium, has an average particle size of 0.01 to 10 µm, and is made into a conductor paste by being uniformly mixed and dispersed in an organic vehicle along with other additives as needed.

Des particules métalliques pouvant être alliées au rhénium sont dispersées comme composant principal dans une phase gazeuse, une vapeur d'oxyde de rhénium est présente autour de ces particules, l'oxyde de rhénium est réduit, et le rhénium précipité sur la surface du composant principal des particules métalliques à la suite de cette réduction est diffusé à haute température sur le composant principal des particules métalliques, ce qui donne une poudre d'alliage contenant du rhénium et comprenant le composant principal de rhénium et de métaux. La poudre ainsi obtenue contient de préférence de 0,01 à 50 % en poids de rhénium, présente une dimension de particule moyenne de 0,01 à 10µm, et est transformée en une pâte conductrice par mélange uniforme, puis dispersée dans un véhicule organique conjointement avec d'autres additifs, au besoin. en tant que de besoin.

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