US 5,489,324 A · Fe-based sintered alloy having wear resistance

Abstract

Disclosed are an Fe-based alloy powder adapted for sintering, an Fe-based sintered alloy, and a process for producing the Fe-based sintered alloy. The Fe-based alloy powder or the matrix of the Fe-based sintered alloy consists, percent by weight, essentially of 2.0 to 15% Co, 2.0 to 10% Mo, and the balance of Fe and inevitable impurities. The Fe-based alloy powder exhibits superb compressibility and corrosion resistance, and accordingly the Fe-based sintered alloy made therefrom exhibits excellent wear resistance, corrosion resistance and oxidation resistance. The Fe-based sintered alloy is further improved in the excellent properties by dispersing novel Ni-based alloy hard particles in the matrix.

Claims13

Dependent claims

An Fe-based sintered alloy having superb wear resistance prepared by mixing an Fe-based alloy powder with a graphite powder and a forming lubricant, and by forming and sintering the resulting mixture;

said Fe-based alloy powder consisting, percent by weight, essentially of:
Co in an amount of 2.0 to 15%;
Mo in an amount of 2.0 to 10%;
and
the balance of Fe and inevitable impurities;
and
said graphite powder mixed in an amount of 0.20 to 2.1% by weight.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

08/429,846Filed 27 Apr 1995 · division

Priority

JP 4-31842827 Nov 1992

Granted

6 Feb 1996

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

C22C 33/0292
With at least one alloying element having a minimum content above 5%: with more than 5% preformed carbides, nitrides or borides
C22C 33/0207
By powder metallurgy: using a mixture of pre-alloyed powders or a master alloy
C22C 33/0242
By powder metallurgy: using the impregnating technique
C22C 33/0257
By powder metallurgy: characterised by the range of the alloying elements

Fe-based sintered alloy having wear resistance

Life of this patent

Fe-based sintered alloy having wear resistance

Life of this patent

Abstract

Claims13