The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Preparation of Carbon Composite with High Oxidation Resistance by MoSi2 Dispersion

  • Goto, S. (Fac. of Engr., Yamaguchi University) ;
  • Kodera, M. (Fac. of Engr., Yamaguchi University) ;
  • Toda, S. (Fac. of Engr., Yamaguchi University) ;
  • Fujimori, H. (Fac. of Engr., Yamaguchi University) ;
  • Ioku, K. (Fac. of Engr., Yamaguchi University)
  • Published : 1999.06.01
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Abstract

Carbon composites with $MoSi_2$ dispersion were prepared by hot-pressing at $1700^{\circ}C$ under 30 MPa for 1 h using polysilazance as binding material. The composites consisted of C, $Mo_{4.8}Si_3C_{0.6}$ and SiC. Bulk density and porosity of the carbon composites with 10 vol% $MoSi_2$ was 1.8g.$\textrm{cm}^{-3}$ and 34%, respectively. This composite was oxidized about 0.05mm from the surface of the carbon composite after oxidation test at $1500^{\circ}C$ for 10h in air. Formation of the $SiO_2$ glass layer was observed by SEM. When this composite suffered damage in the coating layer, it had hardly farther oxidation because of its self-repairing property. The composite prepared in this study indicated good oxidation resistance.

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References

  1. Strategy for Material Design and Development Y. Mishima;S. Iwata
  2. J. Ceram. Soc. Japan. v.103 no.5 Improvement of Oxidation Resistance of Carbon/Carbon Composites by the Multi-Layer CVD Coating Technique T. Suemitsu;A. Takashima;H. Nishikawa
  3. J. Ceram. Soc. Japan. v.100 no.9 Fabrication of a Functionally Gradient Material of Tic-SiC System by Chemical Vapor Deposition C. Kawai;J. Teraki;T. Hirano;T. Nomura
  4. Ceramic Bulltein v.67 no.2 Ceramc Coating for Carbon-Carbon Composites J. R. Strife;J. E. Sheehan
  5. Materials Science and Engineering v.A155 A Comparative Overview of Molybdenum Disilicide composites A. K. Vasudevan;J. J. Petrovie
  6. J. Am. Ceram. Soc. v.79 no.9 Influence of Molybdenum Silicide Additions on High-Temperature Oxidation Resistance of Silicon Nitride Materials H. Klemm;K. Tangermann;C. Schubert;W. Hermel
  7. J. Ceram. Soc. Japan. v.102 no.7 Sintering of hBN Using Polysilazane S. Ohsawa;O. Wada;S. Kim;K. Yasuda;Y. Matsun;S. Kimura
  8. JCPDS Files, # 41-1487
  9. JCPDS Files, # 41-0360
  10. JCPDS Files, # 29-1129
  11. JCPDS Files, # 43-1199
  12. Powder Diffr. v.8 no.1 X-ray Powder Diffraction Pattern of $Mo_{4.8}Si_{3}C_{0.6}$ Jorge L. Garin;Rodolfo L. Mannheim
  13. J. Am. Ceram. Soc. v.40 no.12 Predicting the Thermodynamic Stabilities and Oxidation Resistances of Silicide Cermets Alan W. Searcy