Study of Organic Derivatives of the VIa Group Elements as Steel Acid Corrosion Inhibitors

Effects of derivatives of (4-dimethylaminophenyl) disulfide, diselenide, and ditelluride, as well as bis(4-dimethylaminophenyl)thio- and bis(4-dimethylaminophenyl)selenodimethyl ether on an СТ3 steel free corrosion and on partial electrode processes in sulfuric and hydrochloric acid solutions are studied by gravimetric and voltammetric methods. It is shown that the protective action of the studied substances becomes more pronounced when passing from the initial compounds to their di-iodmethylates; in a sequence of similarly structured compounds, the protective action changes when passing from sulfur to selenium and tellurium derivatives. __________ Translated from Zashchita Metallov, Vol. 41, No. 5, 2005, pp. 473–478. Original Russian Text Copyright ? 2005 by Chernyad'ev, Shein, Nedugov.