Sintered iron alloy resistant to abrasion at high temperature an

Details Sintered iron alloy resistant to abrasion at high temperature an Sintered iron alloy resistant to abrasion at high temperature an

1995-02-22

1996-06-25

Walsh, Donald P.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

428550, 75243, 75245, 75246, C22C 2900

Patent

active

055296025

ABSTRACT:
Disclosed is a sintered iron alloy and a method of manufacturing the same. The sintered alloy comprises: an alloy matrix and a lead phase for imparting lubricability to the sintered alloy. The alloy matrix comprises a first alloy phase being composed of 0.5 to 3% nickel by weight, 0.5 to 3% molybdenum by weight, 5.5 to 7.5% cobalt by weight, 0.6 to 1.2% carbon by weight, and the balance iron, and a second alloy phase being composed of 26 to 30% molybdenum by weight, 7 to 9% chromium by weight, 1.5 to 2.5% silicon by weight, and the balance cobalt. The content of the lead phase in the sintered alloy is not more than 3.5% by weight. The lead phase is dispersed in the alloy matrix and a pore which is formed in the alloy matrix. The ratio of the lead dispersed in the alloy matrix to the total lead phase is 60% by weight or more, and the lead phase dispersed in the alloy matrix is particles in which the maximum particle size is 10 .mu.m or less. In manufacture, a lead powder having a particle size of approximately 50 .mu.m or less is mixed a first raw material powder for the first alloy phase and a second raw material powder for the second alloy phase at a lead content of not more than 3.5% by weight. After compacting and sintering the mixture, the sintered compact is cooled so that the temperature of the compact in the vicinity of 328.degree. C. is cooled at a cooling rate of approximately 2.degree. C./min. or more.

REFERENCES:
patent: 4734968 (1988-05-01), Kuroishi et al.
patent: 4919719 (1990-04-01), Abe et al.
patent: 5080713 (1992-01-01), Ishibashi et al.
English abstract of Japanese Patent No. 5-55593.
English abstract of Japanese Patent No. 5-287463.
English abstract of Japanese Patent No. 5-80521.

Affiliated with

Also associated with

Rating

Sintered iron alloy resistant to abrasion at high temperature an does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sintered iron alloy resistant to abrasion at high temperature an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sintered iron alloy resistant to abrasion at high temperature an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2186000