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Effect of Er on microstructure and electrochemical performance of Al-Zn-In anode
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Key Lab of Nonferrous Materials and New Processing Technology,Guangxi University,Nanning ,Guangxi,China,Key Lab of Nonferrous Materials and New Processing Technology,Guangxi University,Nanning ,Guangxi,China,Key Lab of Nonferrous Materials and New Processing Technology,Guangxi University,Nanning ,Guangxi,China,Key Lab of Nonferrous Materials and New Processing Technology,Guangxi University,Nanning ,Guangxi,China,Key Lab of Nonferrous Materials and New Processing Technology,Guangxi University,Nanning ,Guangxi,China,Key Lab of Nonferrous Materials and New Processing Technology,Guangxi University,Nanning ,Guangxi,China,Key Lab of Nonferrous Materials and New Processing Technology,Guangxi University,Nanning ,Guangxi,China

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TG174.3

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    Abstract:

    The effect of Er content on microstructure of Al-Zn-In alloy anodes were studied by using scanning electron microscopy(SEM), energy spectrum analysis and X-ray diffraction analysis. The polarization curves and EIS of Al-Zn-In alloy with different Er content were tested in the 3.5wt% NaCl solution. The results show that with the increase of Er content, the dendrite was refined, the amount of inter-dendritic precipitates increased, the corrosion potential became more positive, the radius of electrochemical impedance spectroscopy enlarged and corrosion rate also decreased. Al-5Zn-0.03In-1Er alloy has refined dendrites and proper amount of precipitates, with the corrision morphologies of independent pitting, corrosion in uniformity, which is an ideal choice for using as sacrifical alloy.

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[Li Hang, Weibin, Xu Zhengbing, Zeng Jianmin, Li Heng, Chen Rong, Lu Yanyan. Effect of Er on microstructure and electrochemical performance of Al-Zn-In anode[J]. Rare Metal Materials and Engineering,2016,45(7):1848~1854.]
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History
  • Received:March 31,2015
  • Revised:December 26,2015
  • Adopted:January 14,2016
  • Online: October 09,2016

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