Acta Metall Sin  2004, Vol. 40 Issue (2): 202-206     DOI:

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Corrosion of Zinc in Simulated Acid Rain Solution and Under Thin Electrolyte Layer Formed by Simulated Acid Rain Solution

AN Baigang; ZHANG Xueyuan; HAN Enhou; LI Hongxi

State Key Laboratory for Corrosion and Protection; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110016

AN Baigang; ZHANG Xueyuan; HAN Enhou; LI Hongxi. Corrosion of Zinc in Simulated Acid Rain Solution and Under Thin Electrolyte Layer Formed by Simulated Acid Rain Solution. Acta Metall Sin, 2004, 40(2): 202-206 .

Abstract References Related Articles Recommended Metrics Download:  PDF(6119KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The corrosion behaviors of zinc in bulk simulated acid solution and under thin electrolyte layer were studied with an occluded cell which can control the thickness of electrolyte layer. In the bulk simulated acid rain solution with pH value 2.4--3.8, the electrochemical impedance spectroscopy of zinc consists of a capacitive loop in high frequency and an inductive loop in low frequency, the control step for corrosion of zinc is charge transfer process. The corrosion rate and corrosion potential of zinc increase with decreasing pH value of solution. When pH of solution was lower (2.4 and 2.7), the hydrogen bubble absorbed on the surface of zinc was formed due to strong hydrogen process, which made more severely corrosion of zinc around bubble than the other surface of zinc, therefore, the circle trace was formed on the surface of zinc. Under thin electrolyte layer, the corrosion process of zinc changed with thinning electrolyte layer, when the thickness of electrolyte was no more than 100 μm, the control step for corrosion of zinc is a mixed process consisted of charge transfer and diffusion, and the cathodic processes are inhibited and the corrosion rate of zinc decreases with decreasing the thickness of electrolyte layer. Key words:  zinc      acid rain corrosion      electrolyte layer       Received:  19 September 2002      ZTFLH:  TG174   Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors AN Baigang ZHANG Xueyuan HAN Enhou LI Hongxi URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2004/V40/I2/202 [1] Lipfert F W. Mater Perform, 1987; 26(7) : 12 [2] Falk T, Svensson J-E, Johansson L-G. J Electrochem Soc, 1998; 145: 39 [3] Graedel T E. J Electrochem Soc, 1989; 136: 193c [4] Ligier V, Wery M, Hihn J-Y, Faucheu J, Tachez M. 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