Nava Ainechi - Department of Applied Chemistry, Faculty of Science, Tabriz Branch, Islamic Azad University, Tabriz, Iran
Ladan Edjlali - Department of Applied Chemistry, Faculty of Science, Tabriz Branch, Islamic Azad University, Tabriz, Iran
Mohammad Taghi Vardini - Department of Applied Chemistry, Faculty of Science, Tabriz Branch, Islamic Azad University, Tabriz, Iran

In this research, we studied the inhibition of corrosion of Copper in 0.5 M H2SO4 using 3-(4-cholor phenyl)-5-hydroxymethyl isoxazole by weight loss methods. We are used from 3 methods: weight loss method, electrochemical Impedance and electrochemical polarization in measurement of Copper corrosion. Also, the effect of KBr salt in scale of copper corrosion has been studied. The percentage inhibition efficiency was found to increase with increasing concentration of inhibitor to reach 96% at 10-3 M. This compound is efficient inhibitor. The 3-(4-chloro phenyl)-5-hydroxy methyl isoxazol (CPI) molecule leads to the formation of a protective layer on the surface of Cu. The temperature effect on the corrosion behavior of CU in 0.5 M H2SO4 with and without the CPI compound at 10−3M is studied in the temperature range from 298 to 318oK. The adsorption of inhibitor on the Cu surface is found to obey the Frumkin adsorption isotherm model.

Isoxazol; Inhibitor; Corrosion; Impedance electrochemical