Wear-resistant, corrosion-resistant cobalt-based alloys

Details Wear-resistant, corrosion-resistant cobalt-based alloys Wear-resistant, corrosion-resistant cobalt-based alloys

C - Chemistry, Metallurgy

22

C

C22C 19/07 (2006.01)

Patent

CA 2491754

A Co-based alloy comprising 13-16 wt% Cr, 20-30 wt% Mo, 2.2-3.2 wt% Si, and balance Co, with a Cr:Si ratio of between about 4.5 and about 7.5, a Mo:Si ratio of between about 9 and about 15, wear resistance, and corrosion resistance in both oxidizing and reducing acids.

La présente invention concerne un alliage à base de Co comprenant 13-16 % en poids de Cr, 20-30 % en poids de Mo, 2,2-3,2 % en poids de Si, le reste étant du Co, et le rapport Cr:Si valant entre environ 4,5 et environ 7,5, le rapport Mo:Si valant entre environ 9 et environ 15, ledit alliage étant résistant à l'usure et à la corrosion à la fois dans des acides oxydants et dans des acides réducteurs.

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