The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Covalently-Bonded Solid Solution Formed by Combustion Synthesis

  • Ohyanagi, Manshi (Department of Materials Chemistry and the High-tech Research Center, Ryukoku University) ;
  • Munir, Zuhair A. (Facility for Advanced Combustion Synthesis, Department of Chemical Engineering and Materials Science, University of California)
  • Published : 2000.09.01
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Abstract

The feasibility of synthesizing SiC-AlN solid solution by field-activated combustion synthesis was demonstrated. At lower fields of 8-16.5V/cm, composites of AlN-rich and SiC-rich phases were synthesized, but at fields of 25-30 V/cm, the product was a 2H structure solid solution. Combustion synthesis of the solid solution by nitridation of aluminum with silicon carbide under a nitrogen gas pressure of 4-8 MPa was also investigated. The maximum combustion temperature and wave propagation velocity were found to be influenced by the electric field in the field-activated combustion synthesis, and by the green density and nitrogen pressure in the combustion nitridation. In both cases the formation of solid solutions is complete within seconds, considerably faster than in conventional methods which require hours.

Keywords

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