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Citation: Zhang Da-Quan, Gao Li-Xing, Zhou Guo-Ding, Lu Zhu. Synergistic Effects of Benzotriazole and 8-Hydroxyquinoline Combined Inhibitorson Copper Corrosion[J]. Acta Physico-Chimica Sinica, ;2002, 18(01): 74-78. doi: 10.3866/PKU.WHXB20020117 shu

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

1.
Electrochemical Research Group，Shanghai University of Electric Power，Shanghai　200090;Corrosion Prevention Center, East China University of Science and Technology, Shanghai　200137

Received Date: 22 June 2001
Available Online: 15 January 2002

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.
- Benzotriazole;8-hydroxyquinoline;Synergistic effect;AC impedance spectroscopy;PPP-SCF calculation
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