Journal of Inorganic Materials ›› 2013, Vol. 28 ›› Issue (3): 256-260.DOI: 10.3724/SP.J.1077.2013.12208

• Research Paper • Previous Articles     Next Articles

Ablation Properties of ZrB2-SiC Ultra-high Temperature Ceramic Coatings

ZHOU Hai-Jun1,2,3, ZHANG Xiang-Yu2,3, GAO Le2,3, HU Jian-Bao2,4, WU Bin2,4, DONG Shao-Ming2,3   

  1. (1. The Key Laboratory of Inorganic Coating Materials, Chinese Academy of Sciences, Shanghai 200050, China; 2. Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 3. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 4. Graduate University of Chinese Academy of Sciences, Beijing 100049, China)
  • Received:2012-04-05 Revised:2012-07-11 Published:2013-03-20 Online:2013-02-20
  • Supported by:

    Key Laboratory of Inorganic coating materials, Chinese Academy of Sciences (KLICM-2011-08)

Abstract: To improve the anti-ablation properties, the ZrB2-SiC ultra-high ceramic coatings were successfully fabricated on the C/C composites surface by slurry dipping and liquid silicon infiltration process. Their ablation resistances properties were determined by using an equipment of oxygen-propane torch test. The results show that the bonding strength between the coating and C/C matrix is relatively high due to the formation of reactive SiC layer. The ZrB2-SiC coating has a well protection from oxygen-propane fire ablation at 1500℃ for 600 s. The whole coating keep integrity avoiding the C/C matrix from oxidation and ablation during the test. The microstructure indicates that ZrB2-SiC coating has some ZrO2 phase and ultra-high temperature ceramics phase after the test, which proves that the coating also has much longer life for the protection of C/C composites at high temperature airflow erosion environment. The anti-ablation forms of the ZrB2-SiC coating are mainly thermo chemistry corrosion and mechanical erosion.

Key words: C/C composites, ultra-high temperature ceramic coatings, ablation properties

CLC Number: