Stock material or miscellaneous articles – All metal or with adjacent metals – Laterally noncoextensive components
Patent
1995-05-18
1997-04-01
Zimmerman, John
Stock material or miscellaneous articles
All metal or with adjacent metals
Laterally noncoextensive components
361709, 361713, B32B 1504, B32B 314
Patent
active
056164211
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.
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Premkumar Mosur K.
Sawtell Ralph R.
Yun David I.
Aluminum Company of America
Klepac Glenn E.
Pearce-Smith David W.
Zimmerman John
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