期刊
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
卷 119, 期 -, 页码 259-268出版社
ELSEVIER
DOI: 10.1016/j.jtice.2021.02.006
关键词
Copper; Triazole; Hybrid; Sol-Gel; pH; Corrosion
资金
- Basic Science Research Program [2020R1A2C1005959]
- BK21 plus program through the National Research Foundation (NRF) - Ministry of Education of Korea
Hybrid inhibitor-doped sol-gels were synthesized at different pH values and applied as coatings to enhance the corrosion resistance of copper substrates in NaCl solution. The results showed that the hybrid AHMT-doped sol-gel coating at pH 4 exhibited the best corrosion resistance, forming an effective barrier against corrosive chloride ions.
In this study, hybrid inhibitor-doped sol-gels were synthesized using 4-amino-3-hydrazino-5-mercapto1,2,4-triazole (AHMT), 3-glycidoxypropyltrimethoxysilane (GPTMS), and tetraethoxysilane (TEOS) at different pH values (4, 7, and 11). The fabricated sol-gels were applied as coatings via a self-assembly method to obtain corrosion resistance for copper substrates in 3.5% NaCl. The AHMT-doped hybrid sol-gel coatings were characterized through different methods. Interactions between the hybrid AHMT-doped sol-gel and copper metal were demonstrated by quantum chemical calculations based on the density functional theory and molecular dynamics simulations. The results from electrochemical impedance spectroscopy and potentiodynamic polarization analysis of the hybrid AHMT-doped sol-gel coating at pH 4 demonstrated enhanced corrosion resistance compared to the data from the tests at pH values of 7 and 11. This can be explained by the formation of an effectively packed layer, which acted as a physical barrier against corrosive chloride ions that protected copper metal against corrosion. (c) 2021 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据