초록 ▼

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 porou

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.

대표청구항 ▼

A metal matrix composite possessing regions that are electrically isolated from one another, said metal matrix composite formed by a method comprising: (a) placing an insulating substrate in a forming chamber, said insulating substrate being adjacent at least one porous ceramic preform; (b) evacuati

A metal matrix composite possessing regions that are electrically isolated from one another, said metal matrix composite formed by a method comprising: (a) placing an insulating substrate in a forming chamber, said insulating substrate being adjacent at least one porous ceramic preform; (b) evacuating said forming chamber; (c) infiltrating said forming chamber with liquid-phase metal so that said metal fills pores in said preform; (d) solidifying said liquid-phase metal to form a metal matrix composite around said insulating substrate and a metal layer adjacent said composite; and (e) forming at least one groove extending inwardly through said metal layer and said metal matrix composite to said insulating substrate so as to electrically isolate at least one region on a surface of said metal matrix composite from another region on said surface.