Compositional dependence of hydrogenation performance of Ti-Zr-Hf-Mo-Nb high-entropy alloys for hydrogen/tritium storage

作     者：Huahai Shen Jutao Hu Pengcheng Li Gang Huang Jianwei Zhang Jinchao Zhang Yiwu Mao Haiyan Xiao Xiaosong Zhou Xiaotao Zu Xinggui Long Shuming Peng Huahai Shen;Jutao Hu;Pengcheng Li;Gang Huang;Jianwei Zhang;Jinchao Zhang;Yiwu Mao;Haiyan Xiao;Xiaosong Zhou;Xiaotao Zu;Xinggui Long;Shuming Peng

作者机构：Institute of Nuclear Physics and ChemistryChina Academy of Engineering PhysicsMianyang 621900China School of PhysicsUniversity of Electronic Science and Technology of ChinaChengdu 610054China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2020年第52卷第20期

页      面：116-125页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：The author, Huahai Shen is grateful for support from the President’s Foundation of the China Academy of Engineering Physics(No.YZJJLX2018003) the National Natural Science Foundation of China(No.21601168) support from the Joint Funds of the National Natural Science Foundation of China(No.U1930120) 

主　　题：High-entropy alloy Hydrogen/tritium storage Crystal structure Phase transformation Binding energy 

摘      要：A series of Ti-Zr-Hf-Mo-Nb high-entropy alloys with different Mo concentrations were developed as candidate materials for hydrogen/tritium storage in solid *** crystal structures and hydrogenation properties of the Ti-Zr-Hf-Mo-Nb alloys were investigated by X-ray diffraction and differential scanning calorimetry *** the alloys have a body-centred cubic single phase *** results demonstrate that the cell volume of the Ti-Zr-Hf-Mo-Nb hydride decreases with increasing Mo concentration,which reduces their thermal *** theoretical calculation proposes that the lower binding energy of the Ti-Zr-Hf-Mo-Nb hydride decreases the thermal stability of Ti-Zr-Hf-Mo-Nb alloys with higher Mo *** great hydrogenation performance for all the Ti-Zr-Hf-Mo-Nb alloys is owing to their reversible single-phase transformation during the hydrogen absorption-desorption cycle,which would be bene ficial to improving the hydrogen recycling rate and preventing the *** compositional dependence of the hydrogenation performance of the Ti-Zr-Hf-Mo-Nb alloys was established and will be useful in designing novel hydrogen/tritium storage materials to satisfy the requirements of diffe rent application fields in hydrogen,solar thermal and nuclear energy.