Copper strip corrosion testing in hydrocracked base oil in the presence of different inhibitors

In this paper, the corrosion test of copper in hydrocracked base oil HC-6 was performed presence an additive for extremely high pressures (EP additive) different concentrations. EP additives are used to reduce wear industrial applications, under load conditions. Since most these sulfur-based, whose compounds can be corrosive at temperatures, their use leads some materials. To prevent with additive, three commercial inhibitors added. By chemical composition, inhibitor RC 8210 is a derivate dimercaptothia-diazole, 4220 synthetic neutral calcium sulfonate, and IRGAMET 39 derivative tolutriazole. Efficiency monitored by standard methods corrosiveness arising from petroleum products strip (ASTM D-130) gravimetric method, while oxidation stability peroxide number determination. Oxidation 100?1?C 3 24 h. Results studies have shown that effective both examined times.