Copper corrosion and anodic electrodissolution mechanisms in naturally aerated stagnant 0.5 M H2SO4

被引：12
|
作者：
Lu, Yonghong [1 ]
Wang, Wei [1 ]
Xu, Haibo [1 ]
Kong, Xiangfeng [1 ]
Wang, Jia [1 ,2 ]
机构：
[1] Ocean Univ China, Coll Chem & Chem Engn, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Shandong, Peoples R China
[2] State Key Lab Corros & Protect Met, Shenyang 110016, Peoples R China
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Copper; Electrochemical impedance spectroscopy (EIS); Corrosion; Electrodissolution; Chemical redox; AC-IMPEDANCE; ELECTROCHEMICAL REDUCTION; OXYGEN REDUCTION; REACTION MODEL; DISSOLUTION; BEHAVIOR; ELECTRODE; SULFATE; INHIBITION; SURFACE;
D O I：
10.1016/j.corsci.2009.10.037
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mechanisms of copper corrosion and electrodissolution in naturally aerated, stagnant 0.5 M H2SO4 were investigated by means of electrochemical techniques, compared with deaerated measurements. The role of dissolved oxygen was suggested, and three models were proposed in -0.05 similar to 0.15 V vs. SCE range. Near to corrosion potential, chemical redox between cuprous intermediate and oxygen reduction reaction (ORR) intermediate accelerated copper corrosion, and corrosion rate was controlled by a combined cathodic kinetic-anodic diffusion process. in low and high potential ranges, chemical redox, occurred between cuprous intermediate and oxygen molecule, synergistically accelerated the electrodissolution of copper. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：780 / 787
页数：8
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