Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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A Study of the Sintering Behavior of Boron Carbide using In-situ High Temperature Dilatometer

In-situ 고온 딜라토미터를 이용한 탄화붕소의 소결거동 연구

  • Lee, Hyukjae (School of Materials Science and Engineering, Industrial Technology Center for Environment-friendly Materials, Andong National University) ;
  • Kim, Bum-Sup (R&D Center, Wonik QnC) ;
  • Chung, Tai-Joo (School of Materials Science and Engineering, Industrial Technology Center for Environment-friendly Materials, Andong National University)
  • 이혁재 (안동대학교 신소재공학부 친환경 신소재 산업지원센터) ;
  • 김범섭 (원익 QnC 기술연구소) ;
  • 정태주 (안동대학교 신소재공학부 친환경 신소재 산업지원센터)
  • Received : 2014.02.07
  • Accepted : 2014.04.01
  • Published : 2014.04.28
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Abstract

A high temperature dilatometer attached to a graphite furnace is built and used to study the sintering behavior of $B_4C$. Pristine and carbon doped $B_4C$ compacts are sintered at various soaking temperatures and their shrinkage profiles are detected simultaneously using the dilatometer. Carbon additions enhance the sinterability of $B_4C$ with sintering to more than 97% of the theoretical density, while pristine $B_4C$ compacts could not be sintered above 91% due to particle coarsening. The shrinkage profiles of $B_4C$ reveal that the effect of carbon on the sinterability of $B_4C$ can be seen mostly below $1950^{\circ}C$. The high temperature dilatometer delivers very useful information which is impossible to obtain with conventional furnaces.

Keywords

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