Effect of hydrodynamic conditions on copper pitting corrosion inhibition in hydrocarbonate–chloride solutions by benzotriazole

• E. A. Skrypnikova¹ and S. A. Kaluzhina²

¹ MESC Air Force Military Air Academy named after N. E. Zhukovsky and Yu. A. Gagarin, ul. Staryh bolshevikov 54a, Voronezh, 394000 Russian Federation
² Voronezh State University, Universitetskaya pl. 1, Voronezh, 394006 Russian Federation

Abstract: It has been found that in hydrocarbonate–chloride solutions (pH = 8.4) benzotriazole inhibits copper pitting corrosion. Comparative results obtained on stationary and rotating disc electrode have shown that rotation stabilizes the metal/electrolyte systems. Under drastic hydrodynamic conditions, the benzotriazole concentration required for full suppression of copper pitting corrosion was reduced 10-fold on a rotating disc.

Keywords: copper, pit corrosion, inhibition, benzotriazole

Int. J. Corros. Scale Inhib., 2015, 4, no. 2, 139-145 PDF (581 K)
doi: 10.17675/2305-6894-2015-4-1-139-145

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