The effect of the addition of benzotriazole (BTA) or cerium chloride separately and in combination on the anticorrosion performance of Cu-Se-Te alloy in 3.5 wt% NaCl solution has been investigated. The results show that the addition of either BTA or cerium chloride significantly reduces the corrosion rate of Cu-0.25Se-0.25Te, but BTA exhibits a better inhibition effect. Meanwhile, scanning electron microscope analysis displays that the separate addition of BTA or cerium chloride makes the depth of corrosion pit of the sample decrease and the corroded surface smooth. With the combination of BTA and cerium chloride rising, the surface of the sample becomes much flatter and no obvious corrosion pit is found. Energy dispersive spectrum and x-ray photoelectron spectroscopy analyses suggest that when BTA and cerium chloride are added together, CeO2, Ce(OH)3, or complex formed by Ce and BTA might deposit on the surface of copper alloy, which induces the passivation film on the surface of the alloy to become denser and enhances the binding strength of the interface between the surface film and the matrix, thus improving the corrosion inhibition performance of the complex system.
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1 June 2020
SCIENCE SECTION|
March 11 2020
Influence of Benzotriazole and Cerium Chloride on Anticorrosion Performance of Cu-0.25Se-0.25Te Alloy in 3.5 wt% NaCl Solution
Xin Liao;
Xin Liao
*College of Materials Science and Engineering, Sichuan University, P.O. Box 610065, Chengdu, China.
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Ruijie Huang;
Ruijie Huang
*College of Materials Science and Engineering, Sichuan University, P.O. Box 610065, Chengdu, China.
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Dachuan Zhu;
Dachuan Zhu
‡
*College of Materials Science and Engineering, Sichuan University, P.O. Box 610065, Chengdu, China.
‡Corresponding author. E-mail: [email protected].
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Qun Yan
Qun Yan
*College of Materials Science and Engineering, Sichuan University, P.O. Box 610065, Chengdu, China.
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CORROSION (2020) 76 (6): 570–577.
Article history
Received:
November 06 2019
Revision Received:
March 11 2020
Accepted:
March 11 2020
Citation
Xin Liao, Ruijie Huang, Dachuan Zhu, Qun Yan; Influence of Benzotriazole and Cerium Chloride on Anticorrosion Performance of Cu-0.25Se-0.25Te Alloy in 3.5 wt% NaCl Solution. CORROSION 1 June 2020; 76 (6): 570–577. doi: https://doi.org/10.5006/3431
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