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Corrosion inhibition and friction-reduction property of tetrazole derivatives on copper

Lin Liu (Key Laboratory for Synthesis and Application of the Functional Compounds, Bohai University, Liaoning, China)
Hongyu Su (Department of Key Laboratory for Synthesis and Application of the Functional Compounds, Bohai University, Jinzhou, China)
Jinjuan Xing (Department of Key Laboratory for Synthesis and Application of the Functional Compounds, Bohai University, Jinzhou, China)
Dan Peng (Department of Key Laboratory for Synthesis and Application of the Functional Compounds, Bohai University, Jinzhou, China)
Qiang Zhang (Department of Key Laboratory for Synthesis and Application of the Functional Compounds, Bohai University, Jinzhou, China)
Jianhua Qian (Department of Key Laboratory for Synthesis and Application of the Functional Compounds, Bohai University, Jinzhou, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 26 June 2018

Issue publication date: 24 July 2018

146

Abstract

Purpose

This paper aims to evaluate the inhibitive effect and adsorption behavior of 5-(ethylthio)-1H-tetrazole (EHT) and 5-(benzylthio)-1H-tetrazole (BHT) on copper in a sulfur-ethanol system.

Design Methodology Approach

Evaluation was carried out using electrochemical measurement and surface analysis techniques. Measurements of static friction coefficient by scanning electron microscopy and contact angle analysis were applied and finally confirmed the existence of the adsorbed film. The inhibitive mechanism of the two compounds was evaluated by means of quantitative calculation and molecular dynamics simulation. The friction coefficient of corrosion surface before and after adding corrosion inhibitor was determined through static friction coefficient measurements.

Findings

The electrochemical measurement indicated that the most effective concentration of two corrosion inhibitors was 70 mg L–1, while the inhibition efficiency of that was EHT > BHT. The friction coefficient data showed that the addition of corrosion inhibitor reduced the roughness of the corrosion surface. Adsorption behavior of two inhibitors followed the Langmuir’s adsorption isotherm and was attributed to mixed-type adsorption. The results of quantitative calculation and molecular dynamics simulation showed that tetrazole rings of the two inhibitors and its connected S atoms were adsorbed on Cu(111) surface in parallel.

Originality Value

The corrosion inhibition performance of two tetrazolium derivatives in a sulfur-ethanol system was studied by combining experiments with theory, which provided a theoretical basis for the future research.

Keywords

Acknowledgements

This work is supported by the Innovation Team Project of Liaoning Province (Grant No. LT2015001) and the National Natural Science Foundation of China (21176030).

Citation

Liu, L., Su, H., Xing, J., Peng, D., Zhang, Q. and Qian, J. (2018), "Corrosion inhibition and friction-reduction property of tetrazole derivatives on copper", Anti-Corrosion Methods and Materials, Vol. 65 No. 4, pp. 361-367. https://doi.org/10.1108/ACMM-09-2017-1839

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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