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

• Published in: Applied surface science Vol. 316; pp. 207 - 213
• Main Authors: Zhang, Yong-Liang, Huang, Jian-Feng, Li, Cui-Yan, Cao, Li-Yun, Ouyang, Hai-Bo, Zhang, Bo-Ye, Hao, Wei, Wang, Wen-Jing, Yao, Chun-Yan
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.10.2014; Elsevier
• Subjects: Carbon/carbon composites; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Glass coating; Physics; Pulse arc discharge deposition; Pulse arc discharge deposition; Carbon/carbon composites; Glass coating; Composite materials; Glass; Oxidation; Carbon
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2014.08.013

•A glass coating was prepared by a novel pulse arc discharge deposition.•The glass/SiC coating can effectively protect C/C composites from oxidation at 1773K for 292h.•The double-layer coating weigh loss rate is only 1.8×10−5g/cm2h during the oxidation time.•The good oxidation resistant property of the dense borosilicate glass coating is attributed to a low temperature, pulse technique and arc discharge sintering process combined.•The failure of the double-layer coatings is attributed to the generation of microholes and microcracks due to the volatilization of borosilicate glass layer and the escape SiO, CO and CO2 at high temperature after long time oxidation. 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%.