ELECTRODE PERFORMANCES OF MELT-SPINNED AB2 TYPE Zr-BASED HYDROGEN STORAGE ALLOYS
来源期刊：中国有色金属学报(英文版)1998年第4期
论文作者：Yang Xiaoguang Shu Kangyin Zhang Xiaobin Lei Yongquan Wang Qidong Zhang Wenkui Lü Guanglie
文章页码：606 - 609
Key words：Zr-based hydrogen storage alloy, rapid solidification ,electrode performances
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.
