苯并三氮唑对氯化物溶液薄膜下铜初始大气腐蚀过程的吸附及保护行为

Adsorption and protective behavior of BTAH on the initial atmospheric corrosion process of copper under thin film of chloride solutions.

作者信息

Yi Chenxi, Zhu Benfeng, Chen Yu, Du Xiaoqing, Yang Yumeng, Liu Jiao, Zhang Zhao

机构信息

Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China.

Department of Chemical Engineering and Safety, Binzhou University, Binzhou, Shandong, 256600, China.

出版信息

Sci Rep. 2018 Apr 4;8(1):5606. doi: 10.1038/s41598-018-23927-w.

DOI:10.1038/s41598-018-23927-w

PMID:29618834

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5884792/

Abstract

The initial corrosion process of copper and the corrosion resistance mechanism of Benzotriazole under chloride-containing thin electrolyte layer (TEL) was investigated. After theoretical calculation and experimental characterization, the forming process of [Cu(I)BTA] film was chemically adsorbed on copper surface by Cu-N bond tightly; corrosion rate increased as TEL thickness decreased. Whilst, energy distribution plot of electrochemical noise provided the validity of corrosion type, and the purported corrosion energy (E) deduced from electrochemical noise was approximately proportion to corrosion rate (1/R) with and without the anticorrosion film, which denoted the feasibility to determine corrosion rate by nondestructive on-line monitoring electrochemical noise progress.

摘要

研究了铜的初始腐蚀过程以及在含氯薄电解质层（TEL）下苯并三唑的耐腐蚀机理。经过理论计算和实验表征，[Cu(I)BTA]膜的形成过程是通过Cu-N键紧密化学吸附在铜表面；随着TEL厚度减小，腐蚀速率增加。同时，电化学噪声的能量分布图提供了腐蚀类型的有效性，并且从电化学噪声推导得到的所谓腐蚀能量（E）在有和没有防腐膜的情况下都与腐蚀速率（1/R）大致成比例，这表明通过无损在线监测电化学噪声过程来确定腐蚀速率是可行的。