Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of the UO2 Powder Characteristic Changes by Dynamic Milling on the Density

Dynamic Milling에 의한 UO22분말 특성 변화가 밀도에 미치는 영향

  • 김동주 (한양대학교 원자력공학과) ;
  • 나상호 (한국원자력 연구소 미래형원자로연료개발) ;
  • 김연구 (한국원자력 연구소 미래형원자로연료개발) ;
  • 이영우 (한국원자력 연구소 미래형원자로연료개발) ;
  • 김용수 (한양대학교 원자력공학과)
  • Published : 2004.08.01
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Abstract

Effect of the UO$_2$ powder characteristic changes by dynamic milling method on the density was investigated. particle size decreased and its shape was changed from irregular to round form with increasing milling time (0∼8 h), while its specific surface area and O/U ratio increased. It was shown that the sintered density decreased, while green density increased with these powder characteristic changes. It could be considered that this decrement was affected by increased O/U ratio of the UO$_2$ powder during dynamic milling.

Dynamic Milling (DM) 방법에 의한 $UO_2$ 분말의 특성 변화가 밀도에 미치는 영향을 조사하였다 분쇄시간(0∼8시간)의 증가에 따라 분말입자의 크기는 감소하며 둥근 형태를 지녔으며, 비표면적과 O/U 비는 증가하였다. 이러한 특성 변화에 의해 성형밀도는 증가한 반면에, 소결밀도는 감소하는 경향을 보였다. 소결밀도의 감소는 분말 분쇄과정에서 야기된 $UO_2$ 분말의 O/U 비의 증가가 주된 영향을 미친 것으로 사료된다.

Keywords

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