Analysis of the Synthesis Process for Uranium Nitride Powder
SUN Yongju1,2, CHEN Jianwei1, MEI Huaping1, LIU Jing1, LI Taosheng1, WU Qingsheng1
1 Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Safety Technology, Hefei Institute of Physical Science, Chinese Academy of Sciences, Hefei 230031, China 2 University of Science and Technology of China, Hefei 230027, China
Abstract: With the characteristics of high density of uranium atoms, good thermal conductivity, radiation resistance and good compatibility with liquid metal coolants, uranium nitride (UN, Uranium mono-nitride) has been chosen as a candidate for small modular reactor and the accident-tolerant fuel. The performance of UN fuel varies with the synthesis process, which in turn affects its performance in reactors. Compared with oxide nuclear fuel, the synthesis of uranium nitride fuel is complicated and the chemical property is lively, that's why it is so difficult to manufacture and preserve. In this paper, the principles, research status, advantages and disadvantages of 4 uranium nitride synthesis processes such as carbothermal reduction nitridation, metal nitridation, uranium fluoride ammonium nitridation and sol-gel chemistry are summarized and analyzed to propose the development trend of UN synthesis processes.
孙永菊, 陈建伟, 梅华平, 刘静, 李桃生, 吴庆生. 氮化铀(UN)粉末合成工艺分析[J]. 材料导报, 2021, 35(19): 19036-19040.
SUN Yongju, CHEN Jianwei, MEI Huaping, LIU Jing, LI Taosheng, WU Qingsheng. Analysis of the Synthesis Process for Uranium Nitride Powder. Materials Reports, 2021, 35(19): 19036-19040.
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