Oxidation Resistance of 2D C/SiC Composites Fabricated by FCVI
Two-dimensional waved carbon fiber preforms were chemical vapor infiltrated under forced flow, thermal gradient mode for preparation of 2D C/SiC composites. In order to improve the oxidation resistance of the C/SiC composites, B4C powders were added into the preforms and aqueous silica sol-B4C compound coating was claded on the surfaces of composites. It was found that the oxidation resistance of 2D C/SiC composites at temperatures lower than 1273K was improved because of the formation of B2O3 and borosilicate glass by preventing the diffusion of oxygen.
Wei Pan and Jianghong Gong
C. P. Wang et al., "Oxidation Resistance of 2D C/SiC Composites Fabricated by FCVI", Key Engineering Materials, Vols. 368-372, pp. 1056-1058, 2008