The influence of crystal faces on corrosion behavior of copper surface: First-principle and experiment study

被引：24

作者：

Zhang, Zhengwei ^{[1
]}

Wang, Qiang ^{[1
]}

Wang, Xu ^{[1
]}

Gao, Lin ^{[1
]}

机构：

[1] Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Plant Resources & Chem Arid Zones, Urumqi 830011, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2017年 / 396卷

关键词：

Copper; Crystal face; Corrosion; First-principle; 2-MERCAPTOBENZOTHIAZOLE; INHIBITION; ADSORPTION; ELECTRODE;

D O I：

10.1016/j.apsusc.2016.11.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

When the MBT- : Cl- ratio is 50-10:1 in a solution containing of NaCl and Na-MBT (sodium salt of 2-mercaptobenzothiazole), the copper sample-1 (S1) was passivated; when the ration is 10-5:1, it was corroded. The copper sample-2 (S2) had no anti-corrosive ability in all solutions with MBT-:Cl- = 50-5:1. First-principle calculation revealed that the Cu atoms of (220) face, the main face of Sl, have more unsaturated and energetic electrons than that of (200) and (111) faces, the main faces of S2. The highest chemical activation of the (220) face leads the S1 surface to show a better anti-corrosive ability. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：746 / 753

页数：8

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