U-Mo合金与Al扩散反应特征研究  

Characterization of Interaction between U-Mo Alloy and Al Diffusion-Couple

作　　者：刘云明[1] 尹昌耕[1] 孙长龙[1] 陈建刚[1] 孙旭东[1] 

机构地区：[1]中国核动力研究设计院反应堆燃料及材料重点实验室,成都610041

出　　处：《核动力工程》2011年第4期19-23,共5页Nuclear Power Engineering

摘　　要：采用扩散偶方法研究了U-Mo合金与Al扩散反应特征。扩散偶以热压方式实现持续贴合。实验在真空热压炉中完成,热压温度550~570℃,时间5~21 h。结果表明：U-Mo/Al扩散层界面形貌和成分与扩散层厚度有关;在扩散层界面处U、Mo和Al的含量突变;U-Mo侧扩散层产物主要为（U,Mo）Al3,Al侧产物为（U,Mo）Al4和UMo2Al20。U-Mo/Al扩散反应是Al越过U-Mo/Al原始界面向U-Mo侧扩散并发生固体反应和扩散层向Al层生长的过程。In this paper,the interaction behavior of U-Mo/Al was studied with the diffusion-couple method,and the couple was continuously jointed by hot-pressing with special device.Annealing experiments were accomplished in a vacuum hot-pressing furnace,and at 550～570℃ for 5～21hours.The results show that the morphology and composition of interaction Layer depend on the interaction layer thickness.The con-tent of U（Mo） and Al is mutational at the interface of U-Mo/interaction layer/Al.The layer close to U-Mo side is mainly composed of product（U,Mo）Al 3,while the Al side is composed of（U,Mo）Al 4 and UMo 2 Al 20.Diffusion process of U-Mo/Al is Al immigrating over the Al/U-Mo original interface into U-Mo side and re-acting with U-Mo,subsequently the interaction layer is growing into Al.

关 键 词：U-MO合金 AL 扩散层 扩散反应 

分 类 号：TL341[核科学技术—核技术及应用]