低合金钢在添加缓蚀剂的NaCl溶液中的腐蚀行为
CORROSION BEHAVIOR OF LOW-ALLOY STEELS IN NaCl SOLUTION WITH INHIBITORS
摘 要
研究分别添加少量(1%)缓蚀剂乌洛托品、磷酸钠、硫脲时在3.5％NaCl溶液中对低合金钢的缓蚀作用.运用线性极化技术测定比较上述三种缓蚀剂的缓蚀效果,且用交流阻抗法测得的结果与线性极化的一致.通过Tafel曲线对缓蚀剂的缓蚀机理进行了初步探讨.研究结果表明缓蚀效果：磷酸钠>硫脲>乌洛托品.缓蚀剂的作用是在金属表面成膜,改变了金属表面状态,从而抑制金属的腐蚀.
缓蚀剂
缓蚀作用
Low-alloy steel
Inhibitor
Inhibitive efficiency
Abstract
The corrosion behavior of low-alloy steels was studied in 3.5％NaCl solution with inhibitors composed of (CH2)6N4,Na3PO4 and CS(NH2)2.The inhibitive efficiency was measured and compared by linear polarization and the result of EIS was similar to that of linear polarization.The inhibitive mechanism of inhibitors was also analyzed by Tafel curves.Experimental results show that the inhibitive efficiency followed the order:Na3PO4>CS(NH2)2>(CH2)6N4.With the addition of these inhibitors,a film formed on the surface and prevented metals from corrosion.
中图分类号 TG174.4
所属栏目 试验研究
基金项目
收稿日期 2005/9/28
修改稿日期 2005/11/22
网络出版日期
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引用该论文: ZHANG Heng,CHEN Xue-qun,DENG Shu-zhen. CORROSION BEHAVIOR OF LOW-ALLOY STEELS IN NaCl SOLUTION WITH INHIBITORS[J]. Corrosion & Protection, 2006, 27(7): 349～351
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参考文献
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