乳化液中有机缓蚀剂对铜板腐蚀行为的影响

石油炼制与化工 ›› 2019, Vol. 50 ›› Issue (2): 45-49.

乳化液中有机缓蚀剂对铜板腐蚀行为的影响

司佳, 熊桑,孙積,张楠,张新琦

南京工程学院材料科学与工程学院

收稿日期:2018-06-01 修回日期:2018-07-05 出版日期:2019-02-12 发布日期:2019-02-25
通讯作者: 熊桑 E-mail:jxbjxs2008@163.com
基金资助:

EFFECT OF ORGANIC CORROSION INHIBITOR ON COPPER PLATE CORROSION BEHAVIOR IN EMULSION

Received:2018-06-01 Revised:2018-07-05 Online:2019-02-12 Published:2019-02-25
Supported by:

摘要/Abstract

摘要： 采用极化曲线和电化学阻抗谱研究乳化液中噻二唑类有机油溶性缓蚀剂对铜板腐蚀的影响，并利用SEM、XPS方法观察铜板表面形貌，分析其缓蚀机理。结果表明：噻二唑类缓蚀剂能够明显降低乳化液对铜板腐蚀的电流密度，提高其缓蚀效果，且浓度为1.5 mol/L的噻二唑类缓蚀剂具有最佳的缓蚀效果；噻二唑类缓蚀剂与Cu表面相互作用形成Cu(I)-噻二唑的螯合物以保护铜板表面，抑制铜板的进一步腐蚀。

关键词: 铜板, 乳化液, 腐蚀行为, 缓蚀

Abstract: The polarization curves and electrochemical impedance spectra were used to study the effects of organic soluble corrosion inhibitor, thiadiazoles, on copper plate corrosion in emulsion. The morphology of copper surface and the inhibition mechanism of corrosion inhibitor were investigated by SEM and XPS techniques. The results showed that the addition of soluble corrosion inhibitor in emulsion decreases sharply the current density of corroding copper plates and enhances its inhibition efficiency significantly. It is found that the emulsion with 1.5mol/L concentration of inhibitor shows the least corrosion. The formation of Cu (I)-inhibitor chelates film on the Cu surface due to the reaction of inhibitor with Cu is the reason of not further corroding the copper plate.

Key words: copper plate, emulsion, corrosion behavior, corrosion inhibition

中图分类号:

司佳熊桑孙積张楠张新琦. 乳化液中有机缓蚀剂对铜板腐蚀行为的影响[J]. 石油炼制与化工, 2019, 50(2): 45-49.

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