耐高温射线屏蔽材料的制备及性能  

Preparation and characterization of high-temperature shielding materials

作　　者：蔡吴鹏 郑健 孙勇[1] 张伟光[1] 周晓松[1] 王强[1] 赵敏智[1] CAI Wupeng;ZHENG Jian;SUN Yong;ZHANG Weiguang;ZHOU Xiaosong;WANG Qiang;ZHAO Minzhi(Institute of Nuclear Physics and Chemistry,China Academy of Engineering Physics,Mianyang 621999,Sichuan,China)

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621999

出　　处：《金属功能材料》2022年第1期40-44,共5页Metallic Functional Materials

基　　金：四川省科技计划项目(2018GZ0538)。

摘　　要：核能应用技术的发展对射线屏蔽材料提出了耐高温、抗辐照等要求。氢化锆因其高的氢含量和在高温、射线辐照下的结构稳定性被认为是优良的快中子屏蔽材料,但难以制成大尺寸块体。研究了氢化锆与金属基体材料的反应,采用粉末冶金法获得了对快中子、热中子和γ射线均具有显著屏蔽效果的致密块体屏蔽材料。该材料在600℃仍不会明显脱氢,是一种综合性能良好的耐高温射线屏蔽材料。With the development of nuclear energy,shielding materials are required to be stable at high temperatures and under irradiation.Zirconium hydride is regarded as an advanced shielding material for fast neutrons due to the high hydrogen capacity,the high decomposition temperature and the mild irradiation damage.However,it is difficult to fabricate the large-scale bulk of zirconium hydride.Here the reaction between zirconium hydride and the metal base was studied.Through powder metallurgy methods,dense shielding materials were produced,which exhibit good performance in the shielding of fast neutrons,thermal neutrons andγrays.Zirconium hydride in the shielding material kept stable up to 600℃.Our material can be potentially applied for the shielding of nuclear radiation at elevated temperatures.

关 键 词：屏蔽 氢化锆 快中子 Γ射线 高温 

分 类 号：TB34[一般工业技术—材料科学与工程]