Sintered material

Details Sintered material Sintered material

1991-09-16

1994-05-17

Walsh, Donald P.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75239, 75240, 75243, 75246, C22C 2900

Patent

active

053124758

ABSTRACT:
Sintered materials and a method for their manufacture are described together with products made therefrom, such as piston rings and valve seat inserts for internal combustion engines. The sintered material comprises a porous matrix with a composition lying in the range expressed in wt % of 8 to 12 chromium, 0.5 to 3 molybdenum, up to 1.5 vanadium, 0.2 to 1.5 carbon, other impurities 2 max., up to 1 manganese sulphide, optionally up to 5 molybdenum disulphide, balance iron, the matrix having a uniform dispersion of submicroscopic particles of molybdenum rich carbides which render the material resistant to thermal softening.

REFERENCES:
patent: 4583502 (1986-04-01), Takahashi et al.
patent: 4606768 (1986-08-01), Svilan et al.
patent: 4648903 (1987-03-01), Ikenoue et al.
patent: 4808226 (1989-01-01), Adam
patent: 4915735 (1990-04-01), Motooka
patent: 4964908 (1990-10-01), Greetham
patent: 4970049 (1990-11-01), Baker et al.
patent: 5082433 (1992-01-01), Leithner
patent: 5125811 (1992-07-01), Amano et al.

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