Sintering metal parts with a release agent

Details Sintering metal parts with a release agent Sintering metal parts with a release agent

1993-04-08

1995-04-25

Miller, Edward A.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Making composite or hollow article

419 35, 419 38, B22F 700, B22F 102

Patent

active

054096600

ABSTRACT:
A release agent for producing sintered metal parts using the release agent. The method includes applying a release agent to contacting surfaces of at least two green metal parts, forming an assembly of the parts, sintering the assembly, and separating the parts which are in contact with the release agent. The release agent is a mixture of alumina and a vehicle having a vaporization temperature of less than about 100.degree. C. at atmospheric pressure, and is nonreactive with the alumina and the green metal parts. When at least one of the parts having a contacting surface is a honeycomb structure, the median particle diameter of the alumina is no greater than about 3 micrometers.

REFERENCES:
patent: 3658517 (1972-04-01), Davies et al.
patent: 3932681 (1976-01-01), Forker, Jr. et al.
patent: 4582677 (1986-04-01), Sugino et al.
patent: 4758272 (1988-07-01), Pierotti et al.
patent: 4992233 (1991-02-01), Swaroop et al.

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