The effect of oxide and adsorption layers formed in 5-Chlorobenzotriazole vapors on the corrosion resistance of copperстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 8 апреля 2021 г.
Аннотация:Recently chamber inhibition emerged as a cost efficient and environmentally friendly type of vapor phase inhibition capable of protecting a metal surface from corrosion. In this work we study the structure and properties of a surface layer formed on copper after chamber treatment with 5-chloro-1,2,3-1H-benzotriazole (CBTA) whose protective effect significantly exceeds that of native copper oxide. Using a set of corrosion (recurrent moisture condensation conditions, outdoor tests), electrochemical (anodic potentiodynamic polarization, electrochemical impedance spectroscopy), and physical methods (Kelvin probe force microscopy, X-ray photoelectron spectroscopy), it was shown that the protective effect of CBTA was due to the formation of a thin layer of a complex compound with Cu(I) on the metal surface. With a growth in the chamber treatment temperature, the protective effect first increases due to an increase in the inhibitor vapor pressure and then falls at temperatures above 100°C due to increased heterogeneity of the surface layer.