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

Wang, Peipei and Li, Hejun and Ren, Xuanru and Yuan, Ruimei and Hou, Xianghui and Zhang, Yulei (2017) HfB2-SiC-MoSi2 oxidation resistance coating fabricated through in-situ synthesis for SiC coated C/C composites. Journal of Alloys and Compounds, 722 . pp. 69-76. ISSN 1873-4669

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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.

Item Type: Article
Keywords: C/C composites; Oxidation; Surface analysis; Heat treatment
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: 10.1016/j.jallcom.2017.06.008
Depositing User: Eprints, Support
Date Deposited: 26 Jun 2017 13:35
Last Modified: 12 Oct 2017 23:56
URI: http://eprints.nottingham.ac.uk/id/eprint/43777

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