Ni-BASED SINTERED ALLOY AND METHOD FOR MANUFACTURING THE SAME

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PROBLEM TO BE SOLVED : To provide a sintered alloy which further improves heat resistance, oxidation resistance, and corrosion resistance, and a method for manufacturing the sintered alloy. SOLUTION : The Ni-based sintered alloy has a composition consisting of 15-23 mass% Cr, 0.5-3.0 mass% compound containing at least one of O selected from rare earth elements, and the balance being Ni and inevitable impurities. The Ni-based sintered alloy has a metallic structure in which particles of the compound with a maximum particle diameter of 10 μm or less are dispersed in a Ni-Cr alloy matrix with a maximum crystal particle diameter of 50 μm or less. COPYRIGHT : (C)2013, JPO&INPIT