中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 8 No. 4 December 1998 |
（1.Department of Materials Science and Engineering, Zhejiang University,Hangzhou 310027, P. R. China
2.Department of Applied Chemistry, Zhejiang University of Technology,Hangzhou 310014, P. R. China
3.Central Laboratory, Hangzhou University, Hangzhou 310028, P. R. China）
Abstract:Effect of rapid solidification on electrochemical properties and the microstructure of AB2type Zr-based alloy was reported. The electrochemical capacity of ZrCr0.4Mn0.2V0.1Ni1.2Fe0.1 melt-spinning alloy sharply decreased and the activating process prolonged in comparison with that of arc-melt ones. XRD analyses revealed that the lattice parameter of C15 main phase in melt-spinning alloy shrinks obviously, and alloy ribbon is covered by a ZrO2 layer. Extra fine microstructure (grain size about 125nm) and high-density planar defects were detected by TEM observation. A smaller lattice cell and lack of Zr7M10 are regarded to depress the electrochemical properties of the melt-spinning alloy.
Key words: Zr-based hydrogen storage alloy rapid solidification electrode performances
