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Mo–Si–BALLOYS OXIDATION PROTECTIVE COATING FORSiC-COATED CARBON/CARBON COMPOSITES

Author

Listed:
  • TAO FENG

    (C/C Composites Research Center, Department of Materials, Northwestern Polytechnical University, Xi'an Shaanxi 710072, PR China)

  • HE-JUN LI

    (C/C Composites Research Center, Department of Materials, Northwestern Polytechnical University, Xi'an Shaanxi 710072, PR China)

  • QIAN-GANG FU

    (C/C Composites Research Center, Department of Materials, Northwestern Polytechnical University, Xi'an Shaanxi 710072, PR China)

  • XIAO-HONG SHI

    (C/C Composites Research Center, Department of Materials, Northwestern Polytechnical University, Xi'an Shaanxi 710072, PR China)

  • KE-ZHI LI

    (C/C Composites Research Center, Department of Materials, Northwestern Polytechnical University, Xi'an Shaanxi 710072, PR China)

Abstract

A novelMo–Si–Bdouble-layer coating was prepared for the carbon/carbon (C/C) composites by pack cementation in an argon atmosphere. The structures of the double-layer coatings were characterized by XRD and SEM. The as-received coating shows an excellent oxidation resistance at high and intermediate temperature. It could effectively protectC/Ccomposites from oxidation for 30 h with a weight loss of 0.9% in air at 1873 K, and for 25 h with a weight loss of l.7% at 1173 K. The oxidation protective coating was principally due to producing eutectic glass film for decreasing oxygen diffusing through the penetrable cracks in the coating.

Suggested Citation

  • Tao Feng & He-Jun Li & Qian-Gang Fu & Xiao-Hong Shi & Ke-Zhi Li, 2009. "Mo–Si–BALLOYS OXIDATION PROTECTIVE COATING FORSiC-COATED CARBON/CARBON COMPOSITES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 16(02), pages 223-229.
  • Handle: RePEc:wsi:srlxxx:v:16:y:2009:i:02:n:s0218625x09012524
    DOI: 10.1142/S0218625X09012524
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