Study on Atmospheric Corrosion Behavior of Q235 Galvanized steel in Substation

DOI

10.2991/ifmca-16.2017.83How to use a DOI?

Keywords

Hot-dip galvanized steel, Atmospheric corrosion, Corrosion products, Electrochemical technique

Abstract

In this paper, the natural exposure corrosion behavior of Q235 galvanized steel in four different substation environment including urban population centers (A), rural settlements (B), industrial park (C) and chemical industrial park (D) are studied by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). In order to analyze the corrosion behavior comprehensively, the Q235 galvanized steel was insolated for 0~300 days. In addition, the corrosion morphology and corrosion products of Q235 galvanized steel were investigated by scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS). Consequently, it is speculated that Zn(OH)2, ZnCO3 and Zn5(CO)3(OH)6 are the main corrosion products of galvanized steel. Moreover, it is found that the current density increase firstly and then reduce with the natural exposure extending. In general, corrosion products adhering to the galvanized steel surface can promote the corrosion resistance effectively and prevent the sample from corrosion.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yong Li
AU  - Yongliang Ji
AU  - Gaolin Wu
AU  - Wenjing Yang
AU  - Qihui Wang
AU  - Xueming Li
PY  - 2017/03
DA  - 2017/03
TI  - Study on Atmospheric Corrosion Behavior of Q235 Galvanized steel in Substation
BT  - Proceedings of the 2016 International Forum on Mechanical, Control and Automation (IFMCA 2016)
PB  - Atlantis Press
SP  - 542
EP  - 549
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifmca-16.2017.83
DO  - 10.2991/ifmca-16.2017.83
ID  - Li2017/03
ER  -