Accelerating Corrosion Test Study on Galvanized Q345 Steel

Abstract:

Galvanized Q345 steel specimens were accelerating corroded with accelerating environment spectrum for equivalent 1, 3, 4 and 5 years, and then its corrosion behavior was studied based on macro corrosion appearances, micro corrosion appearances, weight loss, pits depth and fatigue strength. The results show that, i because the zinc coating can protect the matrix metal from corroding, the corrosion resistance of galvanized Q345 is much better than Q345; ii between the 1st year and the 4th year, pitting corrosion is dominative, and after the 4th year, the corrosion form transforms from pitting corrosion to uniform corrosion; iii after corrosion for 5 years, the zinc coating was not destroyed completely, and with the turning point of the 4th year, the corrosion rate of the zinc coating becomes higher firstly and then gets lower, which agrees with previous study.

• Periodical: Advanced Materials Research (Volumes 139-141)
• Pages: 314-320
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.139-141.314
• Online since: October 2010
• Authors: Xiao Hua Yang, Ding Zhang, Yong Zhang
• Keywords: Accelerating Corrosion, Galvanization, Q345 Steel

References

[1] C. N. Cao. Engineering and Material[M]. Beijing: Chemistry Industry Press, 2005: 130-133. In Chinese.

[2] X. Zhang. Corrosion Crack of High Voltage Transmission Towers in the 220kV of Chuxi Circuitry[D]. Master Dissertation of Hefei University of Technology, 2007: 3-8. In Chinese.

[3] H. Chang. The Study on Corrosion and Corrosion Protection of Transmission Iron Towers in Chongqing [D]. Master Dissertation of Chongqing University, 2002: 9-12. In Chinese.

[4] M. L. Gu, Y. H. Ding. ShanXi Architecture, 2007, 33(35): 151-152. In Chinese.

[5] J. B. Yang, Z. Li, F. L. Yang, T. C. Huang. Advances of Power System & Hydroelectric Engineering, 2008, 24(4): 4-8. (In Chinese).