Cluster-based composition rule for Laves phase-related BCC solid solution hydrogen storage alloys

作     者：WANG Qing CHEN Feng WU Jiang QIANG Jianbing DONG Chuang ZHANG Yao XU Fen SUN Lixian WANG Qing1), CHEN Feng1), WU Jiang1), QIANG Jianbing1), DONG Chuang1,3), ZHANG Yao2), XU Fen2), and SUN Lixian2)1) State Key Laboratory of Materials Modification, Dalian University of Technology, Dalian 116024, China2) Materials & Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China3) International Center of Materials Physics, Metals Research Institute, Chinese Academy of Sciences, Shenyang 110015, China

作者机构：State Key Laboratory of Materials Modification Dalian University of Technology Dalian 116024 China State Key Laboratory of Materials Modification Dalian University of Technology Dalian 116024 China State Key Laboratory of Materials Modification Dalian University of Technology Dalian 116024 China State Key Laboratory of Materials Modification Dalian University of Technology Dalian 116024 China State Key Laboratory of Materials Modification Dalian University of Technology Dalian 116024 China International Center of Materials Physics Metals Research Institute Chinese Academy of Sciences Shenyang 110015 China Materials & Thermochemistry Laboratory Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China Materials & Thermochemistry Laboratory Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China Materials & Thermochemistry Laboratory Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2006年第25卷第Z1期

页      面：252-255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：This project was financially supported by the National Natural Science Foundation of China (No.50401020) by a Joint Research Funding of Dalian University of Technology and Dalian Institute of Chemical Physics 

主　　题：Ti-Cr-V alloys composition rule cluster hydrogen storage 

摘      要：A new cluster line approach for the composition rule of Laves phase-related BCC solid solution hydrogen-storage alloys was presented. The cluster line in a ternary phase diagram refers to a straight composition line linking a specific binary cluster to the third element. In the Laves phase-related BCC solid solution alloy system such as Ti-Cr-V, Ti-Cr tends to form binary Cr2Ti Laves phase while Ti-V and Cr-V to form solid solutions. This Laves phase is characterized by a close-packing icosahedral cluster Cr7Ti6. A cluster line Cr7Ti6-V is then constructed in this system. Alloy rods with a diameter of 3 mm of compositions along this line were prepared by copper-mould suction method. The alloy structure is found to vary with the V contents. Furthermore, the P-C-T measurements indicate that the cluster-line (Cr7Ti6)1-xVx alloys have large hydrogen storage capacities.