New Aspects of Copper Corrosion in a Neutral NaCl Solution in the Presence of Benzotriazole

作者：Zhao, H. R.; Xu, Y. L.; Chen, C. K.; Chen, Y.^*; Liu, Y. W.; Yang, Z. N.^*

来源：Corrosion, 2018, 74(6): 613-622.

DOI：10.5006/2569

• Benzotriazole
• inhibition
• x-ray
• photoelectron spectroscopy

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 delta(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 Cu(2+)and Cu(I)BTA with a preference for Cu(I)BTA film formation.

• 出版日期2018-6
• 单位滨州学院