HfB2-SiC-MoSi2 oxidation resistance coating fabricated through in-situ synthesis for SiC coated C/C composites

Wang, Peipei; Li, Hejun; Ren, Xuanru; Yuan, Ruimei; Hou, Xianghui; Zhang, Yulei

Abstract

A brand new HfB2-SiC-MoSi2 coating was fabricated to protect carbon/carbon (C/C) composites with inner SiC coating from oxidation, which was prepared by in-situ synthesis. In this paper, the C/C substrate with the protection of the HfB2-SiC-MoSi2/SiC coating could resist oxidation in 1773 K air for 408 h. The double coating also presented expected oxidation protection performance at dynamic oxidation environment. In the test process, the surface coating was oxidized to form a self-sealing silicate glass layer containing HfO2 and HfSiO4, which could hinder crack propagation in coating.

Citation

Wang, P., Li, H., Ren, X., Yuan, R., Hou, X., & Zhang, Y. (2017). HfB2-SiC-MoSi2 oxidation resistance coating fabricated through in-situ synthesis for SiC coated C/C composites. Journal of Alloys and Compounds, 722, https://doi.org/10.1016/j.jallcom.2017.06.008

• Journal Article Type: Article
• Acceptance Date: Jun 1, 2017
• Online Publication Date: Jun 3, 2017
• Publication Date: Oct 25, 2017
• Deposit Date: Jun 26, 2017
• Publicly Available Date: Jun 26, 2017
• Journal: Journal of Alloys and Compounds
• Print ISSN: 0925-8388
• Electronic ISSN: 1873-4669
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 722
• DOI: https://doi.org/10.1016/j.jallcom.2017.06.008
• Keywords: C/C composites; Oxidation; Surface analysis; Heat treatment
• Public URL: https://nottingham-repository.worktribe.com/output/889371
• Publisher URL: https://doi.org/10.1016/j.jallcom.2017.06.008