Zirconium nitride as inert matrix for fast systems
Zirconium nitride as inert matrix for fast systems
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DOI：
10.1016/s0022-3115(03)00133-8
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发表时间：
2003-06
影响因子：
3.1
通讯作者：
M. Streit;F. Ingold;M. Pouchon;L. Gauckler;J. Ottaviani
中科院分区：
文献类型：
--
作者：
M. Streit;F. Ingold;M. Pouchon;L. Gauckler;J. Ottaviani
氮化锆已被提议作为惰性基质材料，用于在加速器驱动的次临界系统或快堆中燃烧钚或嬗变长寿命的锕系元素。结合制造特殊形状燃料芯块的可能性，例如带孔的筒，将设计一种创新燃料以达到更高的燃耗。当前项目的目标是使用直接凝固铸造工艺来成形混合的氮化锆钚环形芯块。作为备用选择，传统的粉末压制路线用于生产标准颗粒。吉布斯能计算用于优化碳热还原的热处理以产生混合氮化物粉末。粉末和颗粒生产的现状以及第一次分析结果如下所示。
Zirconium nitride has been proposed as inert matrix material to burn plutonium or to transmute long-lived actinides in accelerator-driven sub-critical systems or fast reactors. In combination with the possibility to fabricate specially shaped fuel pellets, e.g. barrel with a hole, an innovative fuel would be designed to reach higher burnup.The current project aims to use the direct coagulation casting process to shape mixed plutonium zirconium nitride annular pellets. As a backup option the conventional powder-pressing route is used to produce standard pellets. Gibbs energy calculations were used to optimise the thermal treatment of carborthermic reduction to yield mixed nitride powders. The status quo of the powder and pellet production as well as the first analytical results are presented in the following.