Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Making composite or hollow article
Patent
1991-02-06
1991-08-27
Lechert, Jr., Stephen J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Making composite or hollow article
419 38, 419 48, 419 49, 419 58, 419 60, 419 68, B22F 700
Patent
active
050431374
ABSTRACT:
This invention relates to a method and a device to produce a coating from metal powder metallurgically bonded to a metallic part, said metal powder being compacted over the surface of said metallic part to form the coating using cold isostatic pressing, then coupling an open metallic container to the coating leaving a space between said open metallic container and said coating, completely filling the space between the metallic container and the coating with a ceramic material and sealing, so that the ceramic material exerts pressure due to the thermal expansion over the coating during the heating in a sintering furnace in order to get a metallurgical bond between the metallic part and the coating and simultaneously sintering the coating to achieve the desirable the desirable thickness and the required properties.
REFERENCES:
patent: 3678567 (1972-07-01), Manilla et al.
patent: 3753704 (1973-08-01), Manilla et al.
patent: 4526747 (1985-07-01), Schimmel et al.
patent: 4627958 (1986-12-01), Hays
patent: 4980126 (1990-12-01), Johas
Flores-Malacara Francisco M.
Geronimo-Torres Andres
Lazcano-Navarro Arturo
Vargas-Gutierrez Gregorio
Brown Laurence R.
Instituto Mexicano de Investigaciones Siderugrgicas
Lechert Jr. Stephen J.
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