The corrosion behavior of copper in neutral NaCl solutions in the presence of benzotriazole (BTAH) was studied by potentiodynamic polarization, Fourier transform infrared spectroscopy (FTIR), and x-ray photoelectron spectroscopy (XPS). The thermodynamic parameter reveals that a decrease in the current density of the dissolution process is mainly controlled by the activation parameters when the BTAH concentration is low, whereas the control changed to the pre-exponential factor with increasing BTAH concentration from 10 mg/L to 40 mg/L from the potentiodynamic polarization results. Cu2O, CuO, Cu(OH)2, and Cu(I)BTA were all detected on the copper surface under our experimental conditions. When the BTAH concentration is low, the δ(Cu2+) value increases sharply, whereas a gradual increase occurs when the BTAH concentration increases from 10 mg/L to 40 mg/L, which may be ascribed to the competitive reaction of Cu2+ and Cu(I)BTA with a preference for Cu(I)BTA film formation.
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1 June 2018
CORROSION SCIENCE SECTION|
January 07 2018
New Aspects of Copper Corrosion in a Neutral NaCl Solution in the Presence of Benzotriazole
H.R. Zhao;
H.R. Zhao
*College of Chemistry & Chemical Engineering, Binzhou University, Binzhou, Shandong 256600, China.
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Y.L. Xu;
Y.L. Xu
*College of Chemistry & Chemical Engineering, Binzhou University, Binzhou, Shandong 256600, China.
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C.K. Chen;
C.K. Chen
*College of Chemistry & Chemical Engineering, Binzhou University, Binzhou, Shandong 256600, China.
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Y. Chen;
Y. Chen
‡
*College of Chemistry & Chemical Engineering, Binzhou University, Binzhou, Shandong 256600, China.
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Y.W. Liu;
Y.W. Liu
*College of Chemistry & Chemical Engineering, Binzhou University, Binzhou, Shandong 256600, China.
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CORROSION (2018) 74 (6): 613–622.
Citation
H.R. Zhao, Y.L. Xu, C.K. Chen, Y. Chen, Y.W. Liu, Z.N. Yang; New Aspects of Copper Corrosion in a Neutral NaCl Solution in the Presence of Benzotriazole. CORROSION 1 June 2018; 74 (6): 613–622. doi: https://doi.org/10.5006/2569
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