Study on AC Impedance Spectra of Ceramic Modified Epoxy Coatings Used for Crude Oil Storage Tank

DOI

10.2991/amcce-17.2017.76How to use a DOI?

Keywords

ceramic particles; epoxy coating; sedimentary water corrosion; impedance spectroscopy

Abstract

The bottom of the crude oil storage tank is eroded by the sedimentary water for a long time, the main source of which is the ballast water in the ship's transportation. In this paper, sedimentary water was simulated with 3.5% NaCl solution.The structure of self-made ceramic particles modified epoxy coating was analyzed with scanning electron microscopy and the distribution of ceramic components in the coating was tested by EDS spectra, which showed that Al2O3 particles dispersed in the epoxy resin well;SiO2 particles dispersed in the epoxy resin with poor performance. Using electrochemical impedance spectroscopy (EIS) to study the electrochemical behavior of the ceramic modified epoxy coating / carbon system in 3.5% NaCl solution.The coating's corrosion process is divided into three stages.The coating's AC impedance spectra of each period has been analyzed carefully and the corrosion mechanism of ceramic modified epoxy coating in 3.5% NaCl solution was revealed, which provides a reference for the maintenance of crude oil storage tanks.

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  - ZhongZheng Gao
AU  - Weimin Zeng
AU  - YuLu Ma
PY  - 2017/03
DA  - 2017/03
TI  - Study on AC Impedance Spectra of Ceramic Modified Epoxy Coatings Used for Crude Oil Storage Tank
BT  - Proceedings of the 2017 2nd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2017)
PB  - Atlantis Press
SP  - 439
EP  - 447
SN  - 2352-5401
UR  - https://doi.org/10.2991/amcce-17.2017.76
DO  - 10.2991/amcce-17.2017.76
ID  - Gao2017/03
ER  -