摘要
本工作试验研究以碳酸铵溶液作沉淀剂从硝酸铀酰和硝酸钆的混合溶液中共沉淀AUGdC的方法。试验结果表明：控制铀浓度为300-400g／L、饱和碳酸铵溶液与硝酸铀酰溶液体积比为2．0～2．4等主要工艺参数，可制备出还原、压制和烧结性能良好的AUGdC粉末；UO2—Gd2O3芯块烧结密度达理论密度的96％以上，钆铀分布均匀，形成UO2-Gd2O3固溶体，平均晶粒尺寸在18μm以上。
The preparation of ammonium uranyl gadolinium carbonate （AUGdC） using （NH4）2CO3 solution from the mixed solution of UO2（NO3）2 and Gd（NO3）3 by means of co-precipitation was investigated. The experiment shows that controlling the feed concentration in the range of 300-400 g/L and the volume ratio of （NH4）2CO3 and UO2 （NO3）2 solution in the range of 2.0-2.4 is feasible. The deoxidizing, pressing and sintering performances of preparated AUGdC powder are excellent. The sinter density of UO2-Gd2O3 pellets is above 96%T. D. （theoretical density）, Gd and U distributing equally, forming the UO2-Gd2O3 solid solution, the average grain size is above 18 μm.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2008年第2期163-166,共4页
Atomic Energy Science and Technology
关键词
共沉淀
AUGdC
UO2-Gd2O3芯块
co-precipitation
ammonium uranyl gadolinium carbonate
UO2-Gd2O3 pellets
