| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing sintered parts having corrosion resistance and abrasion resistance at a high temperature, which show further improved corrosion resistance and abrasion resistance in a high-temperature environment, and are easily machined. <P>SOLUTION: A stainless steel powder containing, by mass ratio, 15 to 35% Cr, 3.5 to 22% Ni, and 0.1 to 1.0% Nb at least out of Mo and Nb, and a remainder comprising Fe and inevitable impurities, is blended and mixed with a graphite powder having an amount expressed by the expression 1 to prepare a raw material powder. The raw material powder is compacted into a desired shape and the obtained compact is sintered to join 0.1 mass% or more of C with the stainless steel powder. Graphite powder addition amount(mass%) = (0.05-0.25) × Mo amount in stainless powder(mass%) + (0.12-0.25) × Nb amount in stainless powder(mass%) + at most 0.3 mass%. <P>COPYRIGHT: (C)2013,JPO&INPIT |
