Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Pore Size and its Distribution as a Function of Sintered Density of UO2-20 wt%CeO2Pellets

UO2-20 wt%CeO2소결체의 밀도에 따른 기공크기 및 분포

  • 나상호 (한국원자력연구소 세라믹핵연료 가공기술개발팀) ;
  • 김기홍 (한국원자력연구소 세라믹핵연료 가공기술개발팀) ;
  • 김시형 (한국원자력연구소 세라믹핵연료 가공기술개발팀) ;
  • 이영우 (한국원자력연구소 세라믹핵연료 가공기술개발팀) ;
  • 유명준 (한전원자력연료주식회사 세라믹연료처)
  • Published : 2003.06.01
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Abstract

Open/closed porosity, pore size and its distribution and pore type as a funtion of sintered density of UO$_2$-20 wt％CeO$_2$ pellets were investigated. Pore appeared almost closed-type with the density above 96％ of the theoretical density. Bimodal pore size distribution was observed regardless of the sintered density, but the number of pore decreased with increasing the sintered density. The shape of pore was changed from irregular shape to round type with increasing the sintered density.

$UO_2$-20 wt% CeO$_2$ 소결 펠렛의 밀도에 따른 개/폐 기공도, 기공의 크기 및 그 분포 그리고 기공의 형태를 조사하였다. 이론 소결밀도 약 96% 이상에서는 기공도는 개기공이 거의 없는 폐기공으로 나타났다. 반면에 기공크기 분포는 소결밀도에 관계없이 bimodal 형태를 보이나, 소결밀도가 증가할수록 기공 개수만 적게 나타났다. 기공의 형태는 소결밀도가 증가할수록 불규칙한 형태에서 둥근 형태로 바뀌었다.

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References

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