【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。更多还原

【Abstract】 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 pro-cedures.更多还原