Abstract
Pulse arc discharge deposition (PADD) was developed to prepare an oxidation protective borosilicate glass coating for SiC pre-coated carbon/carbon composites (SiC–C/C). The phase compositions, microstructure and oxidation resistance of the as-prepared glass/SiC coating were investigated. The results show that pulse arc discharge deposition is an effective route to achieve a dense and crack-free outer coating, which is attributed to a low temperature with pulse technique and arc discharge sintering process combined. The glass/SiC multilayer coating can effectively protect C/C composites from oxidation in air at 1773K for 292h with a weight loss of 2.04%.
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