Process for coating carbon fibers with a carbide

Details Process for coating carbon fibers with a carbide Process for coating carbon fibers with a carbide

1989-04-17

1990-05-01

Childs, Sadie

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427 52, 427249, 4272552, 4272553, 4272554, B05D 302, B05D 314, C23C 1632

Patent

active

049217259

ABSTRACT:
A process for continuously coating a strand of continuous carbon filaments by means of a refractory carbide by reactive technique which includes the step of causing the strand to travel under mechanical tension with a hermetic enclosure, simultaneously, introducing into the said enclosure a carbon free gas mixture consisting of hydrogen and of a volatile compound of an element capable of forming a refractory carbide; and heating the reaction mixture consisting of the strand and the gas mixture under controlled conditions so that the formation of the carbide deposit on the filaments takes place by a chemical reaction between the carbon in the filaments and the gas mixture. Under these controlled conditions, the reaction is self-regulated to produce a thin homogenous passivation coating on each filament.

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