| UO2?-Er2O3燃料芯块制备技术初步研究 |
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| 引用本文： | 刘 羽,张 翔,杨 静,曾 强,喻 冲,李圆圆,段盼盼.UO2?-Er2O3燃料芯块制备技术初步研究[J].核动力工程,2018,39(5):47-50. |
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| 作者姓名： | 刘 羽 张 翔 杨 静 曾 强 喻 冲 李圆圆 段盼盼 |
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| 摘 要： | 对Er2O3质量分数为4.32%的UO2-Er2O3可燃毒物燃料芯块的制备技术进行了初步研究。通过对比不同工艺条件（混料、成型、烧结）下，芯块的外观完整度、密度、晶粒度等性能，初步得到了UO2-Er2O3燃料芯块的制备技术。试验表明:干法球磨混合6?h，添加5‰的聚乙烯醇（PVA），300~350?MPa压力下冷压成型，1700~1750℃、H2气氛中烧结2~3?h，可得到外观完整、密度大于等于95%理论密度（T.D.）、晶粒尺寸大于8?μm的UO2?-Er2O3燃料芯块。
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| 关 键 词： | UO2 -Er2O3芯块 可燃毒物 制备 |
Research on Preparation Technology of UO2-Er2O3?Fuel Pellets |
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| Abstract: | A preliminary study?is conducted for?the preparation technology of UO2-Er2O3?burnable poisonous fuel pellets with Er2O3?mass fraction of 4.32%.?We obtain the preparation technology by comparing the performance?(integrity, density, and grain size) of the pellets under different conditions?(mixing, pressing,?and?sintering). The experiments show that UO2-Er2O3?fuel pellets with good integrity?which?theoretical density≥95%?and?grain size larger than 8?μm can be obtained by mixing the powders with planetary ball mill for 6?h and add 5‰ PVA, pressing under 300 ~350?MPa, sintering at 1700~1750℃?with hydrogen atmosphere for 2 ~3?h. |
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