Hard particle, wear-resistant iron-base sintered alloy,...

Details Hard particle, wear-resistant iron-base sintered alloy,... Hard particle, wear-resistant iron-base sintered alloy,...

2006-12-05

2006-12-05

Mai, Ngoclan T. (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

C075S246000, C419S038000

Reexamination Certificate

active

07144440

ABSTRACT:
A hard particle having improved adhesion to a base material, a wear-resistant iron-base sintered alloy, a method of manufacturing the same, and a valve seat are provided. The hard particle comprises 20% to 70% Mo by mass, 0.2% to 3% C by mass, 1% to 15% Mn by mass, with the remainder being unavoidable impurities and Co. The sintered alloy comprises, as a whole, 4% to 35% Mo by mass, 0.2% to 3% C by mass, 0.5% to 8% Mn by mass, 3% to 40% Co by mass, with the remainder being unavoidable impurities and Fe. The alloy comprises a base material component comprising 0.2% to 5% C by mass, 0.1% to 10% Mn by mass, with the remainder being unavoidable impurities and Fe. The alloy further comprises a hard particle component comprising 20% to 70% Mo by mass, 0.2% to 3% C by mass, 1% to 15% Mn by mass, with the remainder being unavoidable impurities and Co. The hard particles are dispersed in the base material in an areal ratio of 10% to 60 %.

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