Composite metallic and refractory article and method of manufact

Details Composite metallic and refractory article and method of manufact Composite metallic and refractory article and method of manufact

1981-08-03

1983-09-13

Hunt, Brooks H.

Stock material or miscellaneous articles

Metal continuous phase interengaged with nonmetal continuous...

291565R, 164 98, 164103, B22F 326

Patent

active

044042620

ABSTRACT:
A composite metallic and refractory article and a method for manufacturing the article is described in which a metallic layer is partially adsorbed within a refractory layer, such as a ceramic layer. The density of the refractory layer increases as it extends away from the metallic layer. The composite is formed by forcing a molten metal under pressure into the pore structure of the refractory layer. Conveniently, a desired internal shape of the finished product is achieved by using a male mold portion to supply the required pressure and to simultaneously form the article having a desired internal cavity. The application of pressure continues long enough to allow the molten metal to become sufficiently adsorbed within the porous refractory layer. When the composite solidifies, the male mold portion is withdrawn from the finished article. In one embodiment the article formed is a piston having a heat resistant ceramic cap combined with an aluminum body.

REFERENCES:
patent: 3149409 (1964-09-01), Maruhn
patent: 3864154 (1975-02-01), Gazza
patent: 3928662 (1975-12-01), Kaneko
patent: 3939897 (1976-02-01), Kaneko
patent: 4033400 (1977-07-01), Gurwell

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