Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Hot Pressing after Cold Cyclic Compaction of Alumina Powder Matrix Mixtures -Effects of Cold Cyclic Compaction-

알루미나 분말 기지혼합체의 상온 반복압축 후 가압소결 -상온 반복압축 효과-

  • Son, G.S. (Department of Mechanical Engieering, Pohang Institue of Science and Technology) ;
  • Suh, J. (Department of Mechanical Engieering, Pohang Institue of Science and Technology) ;
  • Park, B.H. (Research Institue of Industrial Science and Technology) ;
  • Kim, K.T. (Department of Mechanical Engieering, Pohang Institue of Science and Technology)
  • 손건석 (포항공과대학 기계공학과) ;
  • 서정 (포항공과대학 기계공학과) ;
  • 박병학 (산업과학기술연구소) ;
  • 김기태 (포항공과대학 기계공학과)
  • Published : 1993.02.01
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Abstract

Hot pressing after cold cyclic compaction of Al2O3 powder mixtures containing SiC whiskers or Al2O3 short fibers is studied with emphasis on the effects of cold cyclic compaction. The green density of the mixtures increases as the cycle number increases and the cyclic pressure becomes higher. The higher green density is also obtained by cold cyclic compaction with the lower pressrue than a single stroke cold compaction. To achieve a higher densification during hot pressing, cold cyclic compaction before hot pressing is more efficient compared to the conventional hot pressing process (without cold cyclic compaction). Moreover, a low cyclic pressure did not affect on toughening mechanism by whisker reinforcement.

Keywords

References

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