U-10Mo/Al-2Si扩散层性质研究  

Study on Characterization of Interaction Layer of U-Mo/Al-2Si

作　　者：刘云明[1] 尹昌耕[1] 孙长龙[1] 陈建刚[1] 

机构地区：[1]中国核动力研究设计院核燃料及材料国家重点实验室,成都610041

出　　处：《核动力工程》2011年第2期30-34,共5页Nuclear Power Engineering

摘　　要：采用热压扩散偶方法研究了U-10Mo/Al-2Si的扩散层性质。实验在真空热压炉中完成,温度550～570℃,时间5～21 h。结果表明:扩散层随时间的延长和温度的提高而增厚;U-Mo侧生成了抑制U-Mo/Al的扩散反应,Si含量高达47.4%(原子分数)的富Si层。从U-Mo侧到Al-2Si侧,U和Mo的含量递减而Al的含量递增;Si含量在U-Mo侧出现最大含量后递减。U-Mo侧主要为(U,Mo)(Al,Si)3相;Al-2Si侧为(U,Mo)(Al,Si)3和UMo2Al2相,从U-Mo侧到Al-2Si侧UMo2Al2的数量在增加。U-Mo Alloy fuel is the most promising LEU fuel that used for research and test reactors.In this paper,the diffusion and reaction behavior of U-Mo/Al-2Si is studied with the hot-pressing diffu-sion-couple method.The experiment is carried out in a vacuum furnace for 550～570℃ at 5～21h.The result shows that the interaction layer thickness is increasing with temperature augmenting and time prolonging.Rich in Si layer is formed in the U-Mo side with 47.4 at.% Si.From U-Mo side to Al-2Si side,U（Mo） content is decreased while Al is increased,and Si is decreased after biggest content in U-Mo side.The phase of U-Mo side is mainly（U,Mo）（Al,Si）3,and Al side the phase is a mixture of（U,Mo）（Al,Si）3 and UMo2Al2.The amount of UMo2Al2 is increased from U-Mo side to Al-2Si side.

关 键 词：U-MO合金 Al-2Si合金 扩散偶 扩散层 

分 类 号：TL341[核科学技术—核技术及应用]