| 摘要 |
PROBLEM TO BE SOLVED: To provide a wear-resistant sintered alloy for a valve seat material exhibiting excellent high temperature wear resistance. SOLUTION: The wear-resistant sintered alloy is composed, by mass%, 5.26 to 28.4% Mo, 1.15 to 19.2% Co, 0.25 to 6.6% Cr, 0.05 to 2.0% Si, 0.03 to 0.9% V, 0.2 to 2.4% W, and 0.43 to 1.56% C, and the balance Fe and inevitable impurities, wherein 5 to 40% of a Co-based hard phase precipitated with a deposit composed of an Mo silicide is dispersed in a base structure composed of a bainite phase or a mixed phase of bainite and martensite and 5 to 30% of an Fe-based hard phase precipitated with granular Cr carbides etc., is dispersed therein. COPYRIGHT: (C)2005,JPO&NCIPI
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