In this paper we examined the inhibition of copper corrosion in aerated neutral chloride solution. The inhibitors studied are azole types. The present paper is limited to the results of the anodic behavior of copper. Using current potential curves we have selected two compounds presenting the best inhibiting effect. The inhibiting action of these two species has been examined with quartz crystal microbalance (EQCM) and impedance measurements in 0.5M NaCl solution. These results were compared with those determined with bare copper electrode. In the case of blank solution it was show that copper corrosion product is forming spontaneusly and may protect against corrosion. At 0.5 mM inhibitors form an inhibiting film resulting from products adsorption on copper area. The inhibitors reduce considerably anodic current densities and lead to the copper passivation in a large anodic potential range.
Corrosion inhibition of copper in chloride solution by triazole derivatives
FRIGNANI, Alessandro;ZUCCHI, Fabrizio
2000
Abstract
In this paper we examined the inhibition of copper corrosion in aerated neutral chloride solution. The inhibitors studied are azole types. The present paper is limited to the results of the anodic behavior of copper. Using current potential curves we have selected two compounds presenting the best inhibiting effect. The inhibiting action of these two species has been examined with quartz crystal microbalance (EQCM) and impedance measurements in 0.5M NaCl solution. These results were compared with those determined with bare copper electrode. In the case of blank solution it was show that copper corrosion product is forming spontaneusly and may protect against corrosion. At 0.5 mM inhibitors form an inhibiting film resulting from products adsorption on copper area. The inhibitors reduce considerably anodic current densities and lead to the copper passivation in a large anodic potential range.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
