氮化铀粉末合成工艺研究  

Study on Synthesis Process of Uranium Nitride Powder

作　　者：易伟[1] 代胜平[1] 沈保罗[2] 左国平[1] 谈先球[1] 彭倩[1] 王莹[1] 

机构地区：[1]中国核动力研究设计院核燃料及材料国家级重点实验室,610041 [2]四川大学材料科学与工程学院,610065

出　　处：《核动力工程》2007年第5期46-49,118,共5页Nuclear Power Engineering

摘　　要：氮化铀燃料制备的关键技术之一是纯度高、烧结活性好的氮化铀粉末合成工艺技术。本文开展了以三碳酸铀酰胺(AUC)流程制备的高活性氧化铀粉末和高纯度的碳黑为主要原材料,采用碳热还原-氮化反应合成氮化铀粉末的工艺研究,初步考察了碳铀摩尔比、反应气氛以及反应温度和时间等对合成产物成分的影响。实验结果表明,采用适当的碳铀摩尔比(2.3～2.4)以及反应制度可以制备出较高纯度的氮化铀粉末。One of the most important procedures for fabrication of Uranium Nitride fuel is the synthesis of uranium nitride powders with high purity and good sintering ability. The carbothermic synthesis process of uranium nitride powder by reaction of UO2 powder with Carbon and, nitrogen has been studied, and the effect of mole ratio of carbon to uranium, atmosphere controlling, reaction temperature and time on the content of uranium nitride powder has been discussed in this paper. The results show that uranium nitride powder with higher purity can be fabricated by using suitable mole ratio of carbon to uranium （2.3-2.4） and reaction procedures.

关 键 词：氮化铀 碳热还原 合成工艺 

分 类 号：TL364[核科学技术—核技术及应用]