Process for producing carbonaceous material

Details Process for producing carbonaceous material Process for producing carbonaceous material

1993-09-15

1996-06-04

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

In specific atmosphere

264 297, 427227, 427228, C01B 3100, B05D 302

Patent

active

055230350

ABSTRACT:
A process for producing a carbon/carbon composite having a ceramic and carbon coating on its surface consists essentially of the steps of heating a carbon/carbon composite at a temperature of from 800.degree. to 1,700.degree. C., contacting the thus heated composite in the presence of hydrogen with at least one compound selected from the group consisting of halides and hydrides of Si, Zr, Ti, Hf, B, Nb and W in gaseous form to convert the surface of the carbon/carbon composite, in the absence of a carbon releasing gas, into a carbide ceramic layer and then forming a coating film consisting of both carbon and ceramic by vapor phase decomposition at a pressure of 5-100 Torr on said carbide ceramic.

REFERENCES:
patent: 4275095 (1981-06-01), Warren
patent: 4476178 (1984-10-01), Veltri et al.
patent: 4859503 (1989-08-01), Bouix et al.
patent: 5093156 (1992-03-01), Uemura et al.
patent: 5284685 (1994-02-01), Rousseau

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