Valve seat for internal combustion engine

Details Valve seat for internal combustion engine Valve seat for internal combustion engine

1997-02-24

1998-06-02

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75231, 75243, 428550, C22C 3300

Patent

active

057592276

ABSTRACT:
A valve seat for an internal combustion engine provided with a base member, wherein said base member comprises; a matrix of iron-based alloy comprising (a) carbon in a range of 0.5-1.5 weight % based on weight of said base member, (b) at least one element selected from a group consisting of nickel, cobalt and molybdenum in a range of 2.0-20.0 weight % in total based on weight of said base member and (c) iron as a remainder; cobalt-based hard particles dispersed in said matrix in a range of 26-50 weight % based on weight of said base member.

REFERENCES:
patent: 4204031 (1980-05-01), Takemura et al.
patent: 4233073 (1980-11-01), Takemura
patent: 4919719 (1990-04-01), Abe et al.
patent: 5031878 (1991-07-01), Ishikawa et al.
patent: 5512080 (1996-04-01), Takahasi et al.
patent: 5529602 (1996-06-01), Ishii et al.
English abstract pf Japanese Patent No. J61-117254 Jul. 1986.

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