Reinforced metal matrix composite

Details Reinforced metal matrix composite Reinforced metal matrix composite

1974-06-17

1978-04-04

Herbert, Jr., Thomas J.

Coating processes

Coating by vapor, gas, or smoke

427226, 427253, 427367, 427398R, 427431, 427433, 428607, 428651, C09K 166, C23C 108, B44D 116

Patent

active

040828646

ABSTRACT:
A carbon fiber reinforced metal matrix composite is produced by depositing a metal boride coating on the surface of the fibers and subsequently immersing the fibers in a molten bath of the metal matrix material. The boride coating is formed by passing carbon fiber through a gaseous mixture of chlorides of the metal and boron in the presence of zinc vapor at elevated temperatures. The subsequent reaction deposits out a submicron lamina of metal boride on the carbon fibers serving to enhance wetting of the fibers by the molten metal, with the lamina preventing chemical reaction between the fibers and metal matrix materials and also providing a strong mechanical bond therebetween.

REFERENCES:
patent: 3369920 (1968-02-01), Bourdeau et al.
patent: 3393085 (1968-07-01), Howard et al.
patent: 3811917 (1974-05-01), Diefendorf
patent: 3860443 (1975-01-01), Lachman et al.

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