A glass coating prepared by pulse arc discharge deposition for oxidation protection of carbon/carbon composites

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 1773 K for 292 h with a weight loss of 2.04%.