NaCl液滴下304不锈钢表面电化学性质研究

中国腐蚀与防护学报

2012, Vol. 32

Issue (1): 28-33

研究报告

本期目录 | 过刊浏览

NaCl液滴下304不锈钢表面电化学性质研究

刘圆圆,王伟,王燕华,王佳

中国海洋大学化学化工学院青岛 266100

ELECTROCHEMICAL CHARACTERISTICS OF 304 STAINLESS STEEL UNDER A DROPLET OF NaCl

LIU Yuanyuan, WANG Wei, WANG Yanhua, WANG Jia

College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100

全文: PDF(4912 KB)

摘要: 利用丝束电极技术研究NaCl液滴下304不锈钢表面电化学参数分布及其随腐蚀时间的变化规律。结果表明，液滴下不锈钢丝束电极表面的腐蚀电位分布和电偶电流分布均呈现空间、时间上的不均匀性；丝束电极表面随机形成局部阴极区和阳极区，而且随着腐蚀时间的延长，局部区域的极性发生反转。液滴下电极表面的腐蚀程度和不均匀程度均随腐蚀时间的延长先增加后减小，在腐蚀12 h时达到最大。

关键词 ：不锈钢, 液滴, 丝束电极, 腐蚀电位, 电偶电流

Abstract：The wire beam electrode (WBE) was used to study the distributions of the electrochemical parameters of 304 stainless steel under a droplet of NaCl as well as their variations with the corrosion time. It was found that the distributions of the corrosion potential and the galvanic current were inhomogeneous with local anodic and cathodic zones appeared randomly. Moreover, the polarity of local zones changed with the evolution of corrosion process. The corrosion degree and inhomogeneity increased firstly, then decreased afterward with the increase of time. Stainless steel exhibited the highest anodic current density after exposure for 12 hours.

Key words： stainless steel droplet wire beam electrode corrosion potential galvanic current

收稿日期: 2010-10-29

ZTFLH:

TG172.3

基金资助:

国家自然科学基金项目(40906039)资助

通讯作者: 王燕华 E-mail: wyhazz@163.com

Corresponding author: WANG Yanhua E-mail: wyhazz@163.com

作者简介: 刘圆圆，女，1986年生，硕士生，研究方向为金属腐蚀与防护

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引用本文:

刘圆圆,王伟,王燕华,王佳. NaCl液滴下304不锈钢表面电化学性质研究[J]. 中国腐蚀与防护学报, 2012, 32(1): 28-33.
LIU Yuan-Yuan, YU Wei, YU Yan-Hua, YU Jia. ELECTROCHEMICAL CHARACTERISTICS OF 304 STAINLESS STEEL UNDER A DROPLET OF NaCl. J Chin Soc Corr Pro, 2012, 32(1): 28-33.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2012/V32/I1/28

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