Part made of a carbon-carbon composite with an SIC surface-treat

Details Part made of a carbon-carbon composite with an SIC surface-treat Part made of a carbon-carbon composite with an SIC surface-treat

1993-01-21

1995-01-10

Bell, James J.

Coating processes

Heat decomposition of applied coating or base material

Coating decomposed to form carbide or coating carbonized

264 291, 264 292, 427249, 427250, 4274301, B05D 302

Patent

active

053805569

ABSTRACT:
A structural part made of carbon-carbon composite with a matrix surface-treated with SiC, resistant to oxidation and a process for manufacturing it.
According to the invention, the structural part has a fibrous preform (2) composed solely of carbon fibers (4) immersed in a matrix (6) of carbon whose porosities (7, 8) contains ultrafine crystalline SiC powder (10) that serves as a gaseous diffusion barrier. The quantity of crystalline SiC powder is 5% to 30% by weight of the preform-matrix-powder unit. This part can resist up to 1700.degree. C. without external protection against oxidation.

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Material Research Bulletin, vol. 21, No. 11, Nov., 1986, Oxford, GB, pp. 1391-1395, I. Jawed et al.: "Oxidation Protection in Carbon-Carbon Composites".
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Patent Abstracts of Japan, vol. 15, No. 436 (C-882), Nov. 7, 1991, & JP-A-31 83 659 (Nissan Motor Co. Ltd.), Aug., 1991.
Carbon, vol. 27, No. 3, pp. 381-387, 1989, GB: "Mechanical Behaviour of Carbon-Carbon Composites Made with Surface Treated Carbon Fibers", L. M. Manocha et al.
Chemical Technology Review No. 162, "Carbon and Graphite Fibers Manufacture and Application", pp. 198-225.

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