ELECTRODE PERFORMANCES OF MELT SPINNED AB 2 TYPE Zr BASED HYDROGEN STORAGE ALLOYS |
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| Authors: | Yang Xiaoguang Shu Kangyin Zhang Xiaobin Lei Yongquan Wang Qidong |
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| Affiliation: | Yang Xiaoguang,Shu Kangyin,Zhang Xiaobin,Lei Yongquan and Wang Qidong Department of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,P. R. China Zhang Wenkui Department of Applied Chemistry,Zhejiang University of Techno |
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| Abstract: | Effect of rapid solidification on electrochemical properties and the microstructure of AB 2 type Zr based alloy was reported. The electrochemical capacity of ZrCr 0.4 Mn 0.2 V 0.1 Ni 1.2 Fe 0.1 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 ZrO 2 layer. Extra fine microstructure (grain size about 125 nm) and high density planar defects were detected by TEM observation. A smaller lattice cell and lack of Zr 7M 10 are regarded to depress the electrochemical properties of the melt spinning alloy. |
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| Keywords: | Zr based hydrogen storage alloy rapid solidification electrode performances |
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