Oxidation Resistant Behaviour of Mullite/Yttrium Silicate Multilayer Coating for C/SiC Composites at 1500°C

Abstract:

Continuous carbon fibre reinforced silicon carbide (C/SiC) composites were fabricated by precursor infiltration and pyrolysis (PIP) process, a mullite/yttrium silicate multilayer coating was prepared by plasma spray method as the oxidation protective coating. The efficiency of the coating against oxidation was characterized by means of heat treatment of the C/SiC composites at 1500 °C in static air for 1 hour. The results indicated that the weight loss of the coated composites was only 3.4 %, and the flexural strength of the composites retained 95.3 % of the original strength.

• Periodical: Key Engineering Materials (Volumes 602-603)
• Pages: 430-433
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.602-603.430
• Online since: March 2014
• Authors: Shuang Zhao, Xin Gui Zhou, Hong Lei Wang
• Keywords: C/SiC Composites, Mullite, Oxidation Protective Coating, Yttrium Silicate

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