Method of making metal impregnated graphite fibers

Details Method of making metal impregnated graphite fibers Method of making metal impregnated graphite fibers

1978-08-28

1979-06-05

Kendall, Ralph S.

Coating processes

With pretreatment of the base

427404, 427432, 427433, 428367, 428389, 428263, 428272, 428608, C23C 100, B32B 1514

Patent

active

041574095

ABSTRACT:
A method is disclosed for pretreating graphite fibers and woven graphite preforms so that they may be wetted and infiltrated by molten metals such as aluminum and alloys thereof. Pretreatment includes immersing graphite fibers or preforms in a bath of liquid NaK alloy at room temperature. The pretreatment allows a lower temperature and shorter immersion time than prior art processes and permits improved wetting and infiltration by the molten metal constituting the matrix of a graphite fiber reinforced metal composite.

REFERENCES:
patent: 3770488 (1973-11-01), Pepper et al.
Goddard et al., AMMRC CTR 76-11, Preparation of Graphite-Aluminum Composi by the Sodium Process, Apr. 1976.

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