Aluminium oxide forming nickel based alloy

Details Aluminium oxide forming nickel based alloy Aluminium oxide forming nickel based alloy

C - Chemistry, Metallurgy

22

C

C22C 19/05 (2006.01)

Patent

CA 2743129

Nickel based alloy intended for use at high temperatures wherein it comprises in percent by weight (wt-%) C 0.05-0.2 Si max 1.5 Mn max 0.5 Cr 15-20 Al 4-6 Fe 15-25 Co max 10 N 0.03-0.15 O max 0.5 one or more elements selected from the group consisting of Ta, Zr, Hf, Ti and Nb 0.25-2.2 one or more elements selected from the group consisting of REM max 0.5 balance Ni and normally occurring impurities.

La présente invention concerne un alliage à base de nickel destiné à être utilisé sous de hautes températures. Il comprend, en pour cent en poids (% poids) : C 0,05 à 0,2, Si max 1,5, Mn max 0,5, Cr 15 à 20, Al 4 à 6, Fe 15 à 25, Co max 10, N 0,03 à 0,15, O max 0,5, un ou plusieurs éléments choisis dans le groupe composé de Ta, Zr, Hf, Ti et Nb 0,25 à 2,2, un ou plusieurs éléments choisis dans le groupe composé de REM max 0,5, le reste étant constitué de Ni et des impuretés survenant normalement.

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