CAJ | 학술논문

本项工作采用92±0．3at％10 B富集度的碳化硼粉末，经过热压烧结工艺制得了快堆控制棒组件用碳化硼芯块样品，并研究了热压烧结碳化硼芯块的热物理性能。结果表明：利用1900℃下保温10min的热压烧结工艺，碳化硼芯块的相对密度在87．3％～89．6％ TD范围内；碳化硼芯块在室温～1000℃内，随着温度升高，热导率降低，热膨胀系数增大，该数据为我国快堆控制棒组件设计提供了重要依据。
본항공작채용92±0．3at％10 B부집도적탄화붕분말，경과열압소결공예제득료쾌퇴공제봉조건용탄화붕심괴양품，병연구료열압소결탄화붕심괴적열물이성능。결과표명：이용1900℃하보온10min적열압소결공예，탄화붕심괴적상대밀도재87．3％～89．6％ TD범위내；탄화붕심괴재실온～1000℃내，수착온도승고，열도솔강저，열팽창계수증대，해수거위아국쾌퇴공제봉조건설계제공료중요의거。
Hot -pressed boron carbide (B4C) pellets were prepared using fine B4C powders with 92 ± 0 .3at% 10B enrichment .The thermophysical properties of B4C pellets were studied .The results show that the relative densities of B4 C pellets sintered at 1900o C for 10 min are in the range of 87 .3% ~89.6% TD .Within 1000o C ,as temperature increases ,the thermal conductivity of B4 C pellet decrea‐ses ,but the linear expansion coefficient increases .T hese data provide the important input for the con‐trol rod subassembly design of fast reactor in China .