Corrosion Behavior of Galvanized Steel in Simulated Rain

Abstract:

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This paper investigates the corrosion behavior of galvanized steel in simulated rain using electrochemical method and surface analysis. The results indicate that the open circuit potential (OCP) for galvanized steel in simulated rain tends to be stable at -1.122V (SCE). With the increase of pH value, the corrosion current density (Icorr) for galvanized steel in simulated rain decreases initially and increases afterwards. Contrary to Icorr, the linear polarization resistance (Rp) for galvanized steel in simulated rain increases first and then declines. When pH value equals to 8.00, Icorr arrives at the minimum value whereas Rp reaches to its maximum. The findings also demonstrate that serious corrosion occurred on the surface of galvanized steel after immersing in simulated rain, besides, local corrosion was also observed, and the corrosion products are mainly zinc carbonate.

Info:

Periodical:

Advanced Materials Research (Volumes 374-377)

Edited by:

Hui Li, Yan Feng Liu, Ming Guo, Rui Zhang and Jing Du

Pages:

1567-1570

DOI:

10.4028/www.scientific.net/AMR.374-377.1567

Citation:

X. W. Zheng et al., "Corrosion Behavior of Galvanized Steel in Simulated Rain", Advanced Materials Research, Vols. 374-377, pp. 1567-1570, 2012

Online since:

October 2011

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Price:

$35.00

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