SHS법에 의한 탄화텅스텐 분말 합성

Synthesis of Tungsten Carbide Powders by SHS Method

  • 전호병 (명지대학교 무기재료공학과) ;
  • 조덕호 (요업기술원) ;
  • 이형복 (명지대학교 무기재료공학과) ;
  • 박성 (명지대학교 무기재료공학과)
  • Jun, H.B. (Dept. of Inorganic Materials Engieering Myung-Ji Univ) ;
  • Cho, D.H. (Institute of Ceramics Technologu, NITI) ;
  • Lee, H.B. (Dept. of Inorganic Materials Engieering Myung-Ji Univ) ;
  • Park, S. (Dept. of Inorganic Materials Engieering Myung-Ji Univ)
  • 발행 : 1994.10.01

초록

We powders were synthesized from W powders in differnet particle sizes by Self-propagating High-temperature Synthesis process (SHS) using a chemical furnace. The effects of the mole ratio of chemical fuel content, pellet thickness and the mole ratio between carbon and tungsten (C/W Ratio) on synthesis were investigated with the tungsten powders have different particle size each other. Compositional and structural characterization of these powders was carried out by scanning electron microscope (SEM0 and x-ray diffractometer. Powder characterization was carried out by the measurement of particle size distribution with laser-particle size analyzer. The amounts of WC obtained by SHS process depend very much on the particle size of tungsten powder and heat contents given in a product, i.e. as the particle size of W powder is smaller, the amounts of WC produced increase. Also the more heat contents is given, the more amounts of WC increase. By optimizing the synthesis conditions, it is possible to fabricate WC powders which have little secondary phases (W2C, C).

키워드

참고문헌

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