Electrochemical Corrosion and Mathematical Model of Cold Spray Cu-Cu2O Coating in NaCl Solution - Part I: Tafel Polarization Region Model

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	Electrochemical Corrosion and Mathematical Model of Cold Spray Cu-Cu2O Coating in NaCl Solution - Part I: Tafel Polarization Region Model
	R. Ding; X. B. Li; J. Wang; L. K. Xu
	2013
发表期刊	International Journal of Electrochemical Science
ISSN	1452-3981
卷号	8 期号:4 页码:5902-5924
摘要	Cu-Cu2O coating was prepared by advanced Cold Spray technology and rotating ring-disk electrode was applied to study corrosion behavior of the coating in 3.5% NaCl solution. The influence of electrode rotation rate, chloride ion concentration, temperature and pH on polarization of the coating was investigated. The results indicate that the corrosion behavior of Cold Spray Cu-Cu2O coating in Tafel region was under control of both diffusion process and electrochemical reaction, and the limiting diffusion species was CuCl2-. The increase of [Cl-] or decrease of pH accelerates dissolution of Cu2O. This facilitates the release of toxins and improvement of antifouling effect. The rise of temperature accelerates diffusion processes, which weaken the role of diffusion domination and enhance the effect of electrochemical reaction. When the coating is immersed in seawater, three processes proceed in coating surface: (1) active anodic dissolution, (2) formation of the oxide film, (3) dissolution of the oxide film, which are parallel and competitive reciprocally. Based on the reaction mechanism, a mathematical model for anodic Tafel polarization of Cu-Cu2O coating was established and corresponded with experimental results well.
部门归属	[ding rui ; li xiangbo ; xu likun] luoyang ship mat res inst lsrmi, sci & technol marine corros & protect lab, qingdao 266101, peoples r china. [ding rui ; wang jia] ocean univ china, qingdao 266003, peoples r china. [wang jia] state key lab corros & protect, shenyang 110016, peoples r china. ; ding, r (reprint author), luoyang ship mat res inst lsrmi, sci & technol marine corros & protect lab, qingdao 266101, peoples r china. ; dmoyuyang@foxmail.com
关键词	Cold Spray Copper Cuprous Oxide Electrochemical Corrosion Mathematical Model Acidic Chloride Solutions Copper Base Alloys Sea-water Anodic Dissolution Disk Electrode Behavior Electrodissolution Mechanism Kinetics Inhibition
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71187
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	R. Ding,X. B. Li,J. Wang,et al. Electrochemical Corrosion and Mathematical Model of Cold Spray Cu-Cu2O Coating in NaCl Solution - Part I: Tafel Polarization Region Model[J]. International Journal of Electrochemical Science,2013,8(4):5902-5924.
APA	R. Ding,X. B. Li,J. Wang,&L. K. Xu.(2013).Electrochemical Corrosion and Mathematical Model of Cold Spray Cu-Cu2O Coating in NaCl Solution - Part I: Tafel Polarization Region Model.International Journal of Electrochemical Science,8(4),5902-5924.
MLA	R. Ding,et al."Electrochemical Corrosion and Mathematical Model of Cold Spray Cu-Cu2O Coating in NaCl Solution - Part I: Tafel Polarization Region Model".International Journal of Electrochemical Science 8.4(2013):5902-5924.