High performance SiC oxidation protective coating with ZrO2 particle dispersion for carbon/carbon composites

Yu Lei Zhang; He Jun Li; Qian Gang Fu; Ke Zhi Li

doi:10.1002/adem.200800016

High performance SiC oxidation protective coating with ZrO₂ particle dispersion for carbon/carbon composites

Yu Lei Zhang, He Jun Li, Qian Gang Fu, Ke Zhi Li

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

A study was conducted to demonstrate the preparation of a novel and effective silicon carbide (SiC) oxidation protective coating with ZrO ₂ for carbon/carbon (C/C) composites by slurry and pack cementation. The microstructure and the oxidation resistance of the as-prepared coating at 1873 K in air were mainly investigated. ZrO₂ is provided with high melting point, and its toughening mechanism of phase transformation at high temperature can increase the toughness of SiC coating. Introducing the ZrO ₂ particles into the SiC coating could effectively improve the high temperature oxidation resistance of SiC coating. After oxidation in air at 1873 K for 100 h and thermal cycling between 1873 K and room temperature for 8 cycles, the weight loss of the coated sample was only 1.75%. The weight loss of the coated specimen can also be attributed to the formation of holes and microcracks in the coating.

Original language	English
Pages (from-to)	986-989
Number of pages	4
Journal	Advanced Engineering Materials
Volume	10
Issue number	10
DOIs	https://doi.org/10.1002/adem.200800016
State	Published - Oct 2008

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abstract = "A study was conducted to demonstrate the preparation of a novel and effective silicon carbide (SiC) oxidation protective coating with ZrO 2 for carbon/carbon (C/C) composites by slurry and pack cementation. The microstructure and the oxidation resistance of the as-prepared coating at 1873 K in air were mainly investigated. ZrO2 is provided with high melting point, and its toughening mechanism of phase transformation at high temperature can increase the toughness of SiC coating. Introducing the ZrO 2 particles into the SiC coating could effectively improve the high temperature oxidation resistance of SiC coating. After oxidation in air at 1873 K for 100 h and thermal cycling between 1873 K and room temperature for 8 cycles, the weight loss of the coated sample was only 1.75%. The weight loss of the coated specimen can also be attributed to the formation of holes and microcracks in the coating.",

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High performance SiC oxidation protective coating with ZrO₂ particle dispersion for carbon/carbon composites

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