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ZHANG Yan, KUANG Yinjie, MI Mengxin, CHEN Lin, WANG Xingping, LIU Zihan, SHENG Yaoquan, LI Yuchun. Corrosion Behavior of Galvanized Steel in the Environment of Lixi Substation in Qingyuan[J]. Corrosion & Protection, 2018, 39(11): 849-853. DOI: 10.11973/fsyfh-201811008
Citation: ZHANG Yan, KUANG Yinjie, MI Mengxin, CHEN Lin, WANG Xingping, LIU Zihan, SHENG Yaoquan, LI Yuchun. Corrosion Behavior of Galvanized Steel in the Environment of Lixi Substation in Qingyuan[J]. Corrosion & Protection, 2018, 39(11): 849-853. DOI: 10.11973/fsyfh-201811008

Corrosion Behavior of Galvanized Steel in the Environment of Lixi Substation in Qingyuan

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  • Received Date: July 09, 2017
  • The corrosion behavior of galvanized steel after exposure in the atmospheric environment of Lixi substation in Qingyuan for different times was studied by coupon test and electrochemical test, and the corrosion products were characterized by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The results show that the galvanized steel had pits in the initial stage of corrosion (1~3 months); and the pitting pits extended to the entire metal surface in the later stage of corrosion (9~12 months). The corrosion rate of the sample was large at the initial stage of corrosion, and decreased and tended to be stable at the later stage. In the atmosphere environment, Cl- was the main factor causing pitting of galvanized steel; and the wind action caused Mo and Al in the soil to participate in metal corrosion. The corrosion products were mainly composed of ZnSO4 and ZnO after atmospheric exposure test.
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