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Citation: Gan Fuxing, fbi Zhongxu, Wang Dihua, Yao Lu'an. Film Formation Process of Corrosion Inhibitors on Copper in Neutral Solutions[J]. Chinese Journal of Applied Chemistry, ;1998, 15(4): 45-48. shu

Film Formation Process of Corrosion Inhibitors on Copper in Neutral Solutions

Department of Environmental Science, Wuhan University, Wuhan 430072

Received Date: 18 November 1997
Revised Date: 5 April 1998

The film formation process of corrosion inhibitors on copper in neutral solutions was studied by combination of photoelectrochemical technique with electrochemical quartz crystal microbalance(PECQCM). It is found that the film growth on the copper in Na₂SO₄ solution with oxidizing inhibitor Na₂CrO₄ follows the parabola type line, while in NaCl solution it appears to be a broken line. The precipitation type inhibitor Na₂SiO₃ will form film on the copper electrode in NaCl solution, but not in Na₂SO₄ solution.
- corrosion inhibitor,
- film formation process,
- copper electrode,
- photoelectrochemical technique,
- electrochemical quartz crystal microbalance
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