模拟酸雨组分对1Cr18Ni9Ti不锈钢土壤腐蚀行为的影响
Influence of Components of Simulated Acid Rain on Corrosion Behaviors of 1Cr18Ni9Ti Stainless Steel in Soil
摘 要
利用极化曲线和电化学阻抗谱(EIS)等方法研究了模拟酸雨组分对1Cr18Ni9Ti不锈钢在土壤中腐蚀行为的影响。结果表明, 酸雨组分对1Cr18Ni9Ti不锈钢腐蚀行为影响显著。随着SO42-与NO3-浓度比的减小, 不锈钢的腐蚀速率减小, 说明硫酸型酸雨对本体系的腐蚀性明显强于硝酸型酸雨。不锈钢的电化学阻抗谱表现为双容抗弧, 其腐蚀过程主要受氧扩散过程控制。
酸雨
土壤腐蚀
组分
1Cr18Ni9Ti stainless steel
acid rain
soil corrosion
component
Abstract
The influence of components of simulated acid rain(SAR) on corrosion behaviors of 1Cr18Ni9Ti stainless steel in soil was studied by means of polarization curves and electrochemical impedance spectroscopy(EIS). The results indicated that the components of SAR obviously affected the corrosion behaviors of 1Cr18Ni9Ti stainless steel. When the concentration ratio of SO42- to NO3- of SAR decreased, the corrosion rate of the stainless steel would also decrease. EIS of 1Cr18Ni9Ti stainless steel consisted of two capacitive arcs, the corrosion was controlled by oxygen diffusion process.
中图分类号 TG172.4
所属栏目 试验研究
基金项目 贵州省高层次人才科研条件特助经费项目(TZJF-2010年-009号); 贵州省教育厅自然科学研究重点资助项目(黔教科20090050); 遵义市“15851人才工程”经费资助项目(2011年03号)
收稿日期 2011/11/13
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联系人作者伍远辉(yhwull@126.com)
备注伍远辉, 教授, 博士,
引用该论文: WU Yuan-hui,LUO Su-xing,GOU Hua,SUN Cheng. Influence of Components of Simulated Acid Rain on Corrosion Behaviors of 1Cr18Ni9Ti Stainless Steel in Soil[J]. Corrosion & Protection, 2012, 33(5): 378
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参考文献
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