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Influence of phytic acid on the corrosion behavior of carbon steel with different surface treatments

Yingjun Zhang (College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong, China and Materials Science and Chemical Engineering College, Harbin Engineering University, Harbin, China)
Baojie Dou (College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong, China)
Yawei Shao (Materials Science and Chemical Engineering College, Harbin Engineering University, Harbin, China)
Xue-Jun Cui (School of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong, China and Material Corrosion and Protection Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Zigong, China)
Yanqiu Wang (Corrosion and Protection Laboratory, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, China and Materials Science and Chemical Engineering College, Harbin Engineering University, Harbin, China)
Guozhe Meng (College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, China)
Xiu-Zhou Lin (College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 21 September 2018

Issue publication date: 30 October 2018

188

Abstract

Purpose

This paper aim to investigate the influence of PA on the corrosion behavior of carbon steel with blast cleaned or pre-rusted treatments, and interpret the inhibition mechanism of PA on the steel with different surface treatments.

Design/methodology/approach

The influence of PA on the corrosion behavior of blast cleaned or rusty steel was investigated by means of electrochemical impedance spectroscopy (EIS). The EIS data were analyzed using the @ZsimpWin commercial software. The morphology and component of steel after immersion were characterized by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), Fourier transformation infrared (FTIR) and X-ray diffractometer (XRD).

Findings

EIS analysis results indicated that PA had good corrosion inhibition for blast cleaned or rusty steel. SEM, EDS, FTIR and XRD further indicated that PA had two main corrosion inhibition processes for the corrosion inhibition of blast cleaned or rusty steel: corrosion dissolution and formation of protective barrier layers.

Originality/value

Most published works focus the attention only toward the effect of corrosion inhibitor for the clean metal surfaces. However, the surface condition of metal sometimes is unsatisfactory in the practical application of corrosion inhibitor, such as existing residual rust. Some studies also have shown that several corrosion inhibitors could be applied on partially rusted substrates. These inhibitors mainly include tannins and phosphoric acid, but not PA. Therefore, the authors investigated the influence of PA on the corrosion behavior of carbon steel with blast cleaned or pre-rusted treatments in this paper.

Keywords

Acknowledgements

The authors wish to acknowledge the financial supports of the Research Foundation for the Introduction of Talent of Sichuan University of Science and Engineering, China (Grant No. 2016RCL13), the Foundation of Material Corrosion and Protection Key Laboratory of Sichuan Province, China (Grant No. 2016CL11, No. 2017CL10), Education Department of Sichan Province, China (Grant No. 17ZA0279) and Foundation of Youth Science and Technology Innovation Team of Sichuan Province (2016TD0024).

Citation

Zhang, Y., Dou, B., Shao, Y., Cui, X.-J., Wang, Y., Meng, G. and Lin, X.-Z. (2018), "Influence of phytic acid on the corrosion behavior of carbon steel with different surface treatments", Anti-Corrosion Methods and Materials, Vol. 65 No. 6, pp. 658-667. https://doi.org/10.1108/ACMM-05-2018-1937

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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