| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrosion resistant powder alloy which has excellent resistance to a high temperature corrosive environment severe in temperature variation such as a thermal power plant combustion furnace, and is suitable for a boiler tube or the like, and to provide a production method therefor. SOLUTION: This corrosion resistant powder alloy has a composition containing, by mass, <=0.04% C, >0.1 to 3.0% Si, <=0.2% Mn, 18.0 to 24.0% Cr, 6.0 to 10.0% Mo, <=1.9% Nb, <=2.0% Fe, <=0.03% P, <=0.01% S, 0.005 to 0.05% O and <=0.10% N, and the balance Ni with inevitable impurities, or has a composition in which one or more kinds selected from <=0.5% Al, <=0.5% Ti, <=0.5% rare earth metals, <=0.5% Y, <=0.5% Zr and <=0.5% Hf are selectively added to the above mentioned composition so that their total is controlled to 0.01 to 0.5%.
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