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Volume 15 Issue 6
Dec.  2008
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Dangshe Hou, Kezhi Li, Hejun Li, Qiangang Fu,  and Yulei Zhang, SiC/Si-W-Mo coating for protection of C/C composites at 1873 K, J. Univ. Sci. Technol. Beijing, 15(2008), No. 6, pp. 822-826. https://doi.org/10.1016/S1005-8850(08)60294-7
Cite this article as:
Dangshe Hou, Kezhi Li, Hejun Li, Qiangang Fu,  and Yulei Zhang, SiC/Si-W-Mo coating for protection of C/C composites at 1873 K, J. Univ. Sci. Technol. Beijing, 15(2008), No. 6, pp. 822-826. https://doi.org/10.1016/S1005-8850(08)60294-7
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Materials

SiC/Si-W-Mo coating for protection of C/C composites at 1873 K

  • 通讯作者:

    Kezhi Li    E-mail: likezhi@nwpu.edu.cn

  • In order to prevent carbon/carbon composites from oxidation at 1873 K, an efficient oxidation protective SiC/Si-W-Mo coating was prepared by a two-step pack cementation technique. The microstructures and the phase composition of the as-received multi-coating were examined by scanning electron microscopy (SEM) and X-ray diffraction (XRD). It is seen that the compact multi-coating is composed of α-SiC, Si, and (WxMO1-x)Si2. Oxidation test shows that, after oxidation at 1873 K in air for 102 h and thermal cycling between 1873 K and room temperature for 10 times, the weight loss of the SiC/Si-W-Mo coated C/C composites is only 0.26%. The invalidation of the multi-coating is attributed to the formation of penetrable cracks in the coating. 2008 University of Science and Technology Beijing. All rights reserved.
  • Materials

    SiC/Si-W-Mo coating for protection of C/C composites at 1873 K

    + Author Affiliations
    • In order to prevent carbon/carbon composites from oxidation at 1873 K, an efficient oxidation protective SiC/Si-W-Mo coating was prepared by a two-step pack cementation technique. The microstructures and the phase composition of the as-received multi-coating were examined by scanning electron microscopy (SEM) and X-ray diffraction (XRD). It is seen that the compact multi-coating is composed of α-SiC, Si, and (WxMO1-x)Si2. Oxidation test shows that, after oxidation at 1873 K in air for 102 h and thermal cycling between 1873 K and room temperature for 10 times, the weight loss of the SiC/Si-W-Mo coated C/C composites is only 0.26%. The invalidation of the multi-coating is attributed to the formation of penetrable cracks in the coating. 2008 University of Science and Technology Beijing. All rights reserved.
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