J. Japan Inst. Metals, Vol. 38, No. 8 (1974),
pp. 757-761

Fabrication and Mechanical Properties of Carbon Fiber Reinforced Al Composites

Kunihiko Mimura¹, Osamu Okuno² and Ishi Miura²

Abstract:

Carbon fiber/Al composites were fabricated by vacuum hot pressing and their mechanical properties were measured. In order to improve bonding and wetting in the carbon fiber/Al interface and to avoid the formation of aluminium carbide, chemical deposition of copper was applied to carbon fiber surfaces. Moreover, to align carbon fibers in Al matrix, pre-preg sheets of plasma sprayed monolayer carbon fiber/Al foils were used. The results were as follows:
(1) The tensile strength of composites containing 10∼15 vol% carbon fiber was close to the theoretical values (23∼32 kg/mm²), but that for 20∼40 vol% carbon fiber was 50∼70% of these values (35∼48 kg/mm²).
(2) Damage of carbon fibers seems not to be observed by electron probe microanalysis, microscopic examination and scanning electron microscopic examination.

(Received 1974/04/20)

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