含水量对连铸铜包钢在大港土壤中腐蚀行为的影响

doi:10.11902/1005.4537.2013.049

中国腐蚀与防护学报

2014, Vol. 34

Issue (1): 65-69 DOI: 10.11902/1005.4537.2013.049

本期目录 | 过刊浏览

含水量对连铸铜包钢在大港土壤中腐蚀行为的影响

朱敏, 杜翠薇(

), 黄亮, 刘智勇, 赵天亮, 李琼, 李晓刚

北京科技大学腐蚀与防护中心北京 100083

Influence of Water Contents on Corrosion Behavior of Continuous Casting Copper-clad Steel in Dagang Soil

ZHU Min, DU Cuiwei(

), HUANG Liang, LIU Zhiyong, ZHAO Tianliang, LI Qiong, LI Xiaogang

Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, China

全文: PDF(1147 KB) HTML

摘要:

采用极化曲线和电化学阻抗技术对连铸铜包钢在含水量20%~30% (质量分数) 的大港滨海盐渍土中的腐蚀电化学行为进行研究。结果表明：埋样初期,连铸铜包钢腐蚀速率大致相等,含水量对其腐蚀行为影响较小,电极过程主要为活化控制；埋样后期,连铸铜包钢腐蚀速率先减小后趋于平稳,这是含水量对电极过程两个相反作用 (氧浓度降低的阻滞作用和环境水化的促进作用) 的综合作用结果,电极过程表现为阴极的氧扩散控制。

关键词 ：连铸铜包钢, 含水量, 大港土壤, 腐蚀行为

Abstract：

The corrosion behavior of continuous casting copper-clad steel in Dagang soil with 20%~30% water contents was studied by polarization curve measurement and EIS. It is shown that during the initial corrosion stage, the corrosion rates of continuous casting copper-clad steel are almost equal, which imply the water contents have little influence on the corrosion behavior. The control step for corrosion of continuous casting copper-clad steel in the soil is activation polarization process at the initial stage. During the later stage, the corrosion rates of continuous casting copper-clad steel decrease and then tend to be stable with the increase of water contents, which may be due to the synergistic effect of the two opposite factors i.e. the block effect with reducing oxygen and the stimulation effect with environmental water on the electrode process. However the corrosion behavior is mainly affected by oxygen diffusion control.

Key words： continuous casting copper-clad steel water content Dagang soil corrosion behavior

收稿日期: 2013-04-08

ZTFLH:

TG172.4

基金资助:国家自然科学基金重点项目(51131001);国家自然科学基金项目(51371036) 资助

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引用本文:

朱敏, 杜翠薇, 黄亮, 刘智勇, 赵天亮, 李琼, 李晓刚. 含水量对连铸铜包钢在大港土壤中腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2014, 34(1): 65-69.
Min ZHU, Cuiwei DU, Liang HUANG, Zhiyong LIU, Tianliang ZHAO, Qiong LI, Xiaogang LI. Influence of Water Contents on Corrosion Behavior of Continuous Casting Copper-clad Steel in Dagang Soil. Journal of Chinese Society for Corrosion and protection, 2014, 34(1): 65-69.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2013.049 或 https://www.jcscp.org/CN/Y2014/V34/I1/65

图1 连铸铜包钢表面Cu层的原始微观形貌

图2 连铸铜包钢在不同含水量条件下埋样1 d的极化曲线

图3 连铸铜包钢在不同含水量条件下埋样30 d的极化曲线

表1 极化曲线拟合结果

图4 在不同含水量条件下大港土壤中连铸铜包钢的电化学阻抗谱

图5 EIS等效电路

表2 EIS等效电路拟合结果

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