C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 19/07 (2006.01) A61L 27/00 (2006.01) A61L 27/04 (2006.01) C22C 1/04 (2006.01) C22C 1/08 (2006.01) A61F 2/00 (2006.01)
Patent
CA 2178808
A powder metallurgy article formed from a Co-Cr-Mo alloy powder and a method for making the article are disclosed. The Co-Cr-Mo alloy powder contains, in weight percent, about 0.35 % max. C, about 1.00 % max. Mn, about 1.00 % max Si, about 26.0-30.0 % Cr, about 5.0-7.0 % Mo, about 3 % max Ni, about 0.25 % max. N, about 1.00 % max. Fe, about 0.01 % max. of oxide forming metals, and the balance is essentially Co. Within their respective weight percent limits C and N are controlled such that they satisfy the relationship: 62.866 + 360.93 x (%C) + 286.633 x (%N) - 682.165 x (%C)2 - 641.702 x (%N)2 >= 120.
Article produit par la métallurgie des poudres fait d'une poudre d'un alliage de Co-Cr-Mo et son procédé de fabrication. Ladite poudre contient en outre en poids: environ 0,35 % de C au maximum, environ 1,00 % de Mn au maximum, environ 1,00 % de Si au maximum, environ 26,0 à 30,0 % de Cr, environ 5,0 à 7,0 % de Mo, environ 3,00 % de Ni au maximum, environ 0,25 % de N au maximum, environ 1,00 % de Fe au maximum, environ 0,01 % au maximum de métaux formant oxydes, le reste étant principalement du Co. Tout en se situant dans leurs limites de poids respectives, les quantités de C et de N son réglées pour satisfaire à la relation suivante: 62,866 + 360,93 x (%C) + 286,633 x (%N) - 682,165 x (%C)?2¿ - 641,702 x (%N)?2¿ >= 120.
Crs Holdings Inc.
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