Inhibiting Action of Benzotriazole on Copper Corrosion in Deaerated Sulfuric Acid Containing Ferric Ions by the Rotating Disc Electrode, Fluorescence, and Raman Spectroscopies

Inhibiting properties of benzimidazole films for Cu(II)/Cu(I) reduction in chloride media studied by RDE and EQCN techniques

“…This is indicative of weak interactions, most likely, of the physisorption type. This implies somewhat lower inhibition efficiency as compared to other known inhibitors, such as benzotriazole (BTA) [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] and organophosphates [21,22] (e.g., carboxy-hydroxy-methyl phosphonic acid and O,O-dibutylphosphorodithoic acid) which are toxic [41]. The most widely investigated inhibitor for copper corrosion has been BTA, which is also an excellent inhibitor for iron.…”

Electrochemistry and surface analysis of the effect of benzotriazole on the cut edge corrosion of galvanized steel

“…Its inhibiting properties have been attributed to the formation of a polymeric film with monovalent copper [4] -[Cu(I)-BTA] n -in neutral pH, or to physical adsorption onto the copper surface in acidic environment [5]. Although the equilibrium BTAH ↔ BTA − + H + favours the presence of the neutral form in acidic media, a shift of the equilibrium may occur due to the formation of copper complexes [6][7][8][9]. Benzotriazole also seems to act on other substrates, like aluminum [10,11], stainless steel [12,13], iron [14,15] and zinc [5,16].…”

Filmes de benzotriazol sobre materiais ferrosos: formação, eficiência, resistência, efeito de aditivos e do transporte de massa

“…Esta inibição se deve principalmente à formação de complexos entre o BTAH e os íons de cobre [11,23,26,27]. Neste trabalho estudou-se o efeito da adição de íons de cobre(lI) na eficiência inibidora do BTAH para os aços carbono em meio de ácido sulfúrico e também o efeito desses íons na resistência do filme em um meio que não contem o inibidor.…”