物理化学学报 >> 2002, Vol. 18 >> Issue (01): 74-78.doi: 10.3866/PKU.WHXB20020117

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苯并三唑和8-羟基喹啉对铜的缓蚀协同作用

张大全;高立新;周国定;陆柱   

  1. 上海电力学院 电化学研究室，上海　200090;华东理工大学 防腐蚀中心，上海　200137
  • 收稿日期:2001-06-22 修回日期:2001-09-10 发布日期:2002-01-15
  • 通讯作者: 张大全 E-mail:dyhx98@public6.sta.net.cn

Synergistic Effects of Benzotriazole and 8-Hydroxyquinoline Combined Inhibitorson Copper Corrosion

Zhang Da-Quan;Gao Li-Xing;Zhou Guo-Ding;Lu Zhu   

  1. Electrochemical Research Group，Shanghai University of Electric Power，Shanghai　200090;Corrosion Prevention Center, East China University of Science and Technology, Shanghai　200137
  • Received:2001-06-22 Revised:2001-09-10 Published:2002-01-15
  • Contact: Zhang Da-Quan E-mail:dyhx98@public6.sta.net.cn

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摘要： 通过电化学极化曲线和电化学阻抗谱研究了苯并三唑（BTA）和8羟基喹啉（HQ）对铜的缓蚀协同作用， BTA和HQ复配使用后提高了电极的膜电阻，降低了电极的膜电容，增强了对铜腐蚀的抑制作用.通过MM2分子力学程序和PPPSCF量子化学方法优化计算了BTA和HQ的分子结构参数，分析讨论了它们之间的缓蚀协同效应.

关键词: 苯并三唑, 8-羟基喹啉, 协同作用, 交流阻抗谱, PPP-SCF程序计算

Abstract: The efficiency of benzotriazole(BTA) and 8hydroxyquinoline(HQ) as corrosion inhibitors for copper was investigated in 3％ NaCl solution. Potentiodynamic polarization and a.c impedance spectroscopy were applied to study the corrosion behavior in presence of inhibitors and their complex. A synergistic effect of BTA and HQ combined inhibitors on copper corrosion was observed. The molecular structure parameters of BTA and HQ were obtained via MM2 forcefield program and PPPSCF quantum chemical calculation. The synergistic effect was attributed to the formation of a more compact protective layer.

Key words: Benzotriazole, 8-hydroxyquinoline, Synergistic effect, AC impedance spectroscopy, PPP-SCF calculation