Metal matrix composites containing electrical insulators

Details Metal matrix composites containing electrical insulators Metal matrix composites containing electrical insulators

1997-03-27

1999-12-21

Arbes, Carl J.

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

174 163, 174 524, 427367, 428614, 428209, 428210, B21B 146

Patent

active

060032219

ABSTRACT:
A method of fabricating a metal matrix composite containing electrically isolated areas and the MMC formed from the method. The method comprises: (a) providing a liquid pool of unreinforced aluminum alloy; (b) infiltrating the unreinforced aluminum alloy into a stack comprising upper and lower porous preforms and an electrical insulator material placed between the preforms; (c) solidifying the liquid-phase metal to form a metal matrix composite product that completely surrounds the stack; and (d) forming at least one groove in the solidified metal, the groove extending downward to the insulating substrate so as to electrically isolate at least one region on the surface of the metal matrix composite.

REFERENCES:
patent: 3718441 (1973-02-01), Landinham
patent: 3868267 (1975-02-01), Gazza et al.
patent: 4033400 (1977-07-01), Gurwell et al.

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