Inhibition of copper corrosion in acidic solution by 2-thio-imidazol-4-one

ABSTRACT

Many studies have been reported on the inhibition of the corrosion of copper in an aqueous acid or neutral solutions by benzotriazoles [1-5]. The inhibition mechanism of the corrosion of copper by benzotriazoles and its derivatives Was previously reported [6-8] The inhibition effects of ring substituted benzotriazoles on the corrosion of copper in chloride and sulphate solutions were investigated [9-12]. Recent studies on the corrosion inhibition of copper by some heterocyclic compounds [13], viz., tosyl hydrazine, 4, nitrobenzoyl-hydrazine and terephthalye [14], piperidine, piperidones and tetrahydrothiopyrones [15] silane-modified imidazoles [16] and benzenethiols [17] have been reported. The present study aims to investigate the effect of some controlling factors on the corrosion inhibition of copper in HNO- by 2-thio-imidazol-4-one I such as inhibitor concentration and temperature applying a weight loss and polarization techniques