H-bn modified p/m stainless steels

C - Chemistry – Metallurgy – 22 – C

Patent

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Details

C22C 33/02 (2006.01)

Patent

CA 2371439

In the invention, a stainless steel powder of the desired composition is either directly mixed with a h-BN powder, compressed and sintered of the stainless steel powder is compressed, impregnated with a solution containing h- BN and then sintered or compressed, sintered and then impregnated with a solution containing h-BN. The sintered bodies in all the aforementioned cases may be resin impregnated. Steel body formation may be done by traditional press compacting or, alternatively, by injection molding steel powder in molds (metal injection molding, MIM).

L'invention concerne une poudre d'acier inoxydable de composition souhaitée, laquelle poudre est soit directement mélangée à une poudre de nitrure de bore hexagonal (h-BN), compressée puis frittée, soit compressée puis imprégnée d'une solution contenant du h-BN, puis frittée et compressée et frittée puis imprégnée d'une solution contenant du h-BN. Dans tous les cas de figures susmentionnés, les corps frittés peuvent être une résine imprégnée. La formation de corps d'acier peut être réalisée par compactage ou par moulage par injection d'une poudre d'acier dans des moules (moulage par injection de métal, MIM).

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