Passivation of carbon steel in neutral chloride media by inhibited compositions based on normal alkanes

• V. I. Vigdorovich, L. E. Tsygankova, N. V. Loktionov and N. V. Shel

Derzhavin State University, ul. Internatsyonalnaya 33, Tambov, 392000 Russian Federation

Abstract: The cathodic and anodic polarization of steel electrodes covered by thin films of compositions containing a 10 wt.% mixture of amines of hydrogenated acids of tall oil or individual C16H33NH2 amine in n-C15H32 or n-C10H22 has been studied in 0.5 M NaCl solution. At the polarization from the cathodic region to the anodic one, a potential range is observed where the process rate does not depend on the potential. This potential range spreads in both directions from the corrosion potential and is interpreted as the non-oxide passivity region.

Keywords: passivity, adsorption, polarization, potential, amine, protection

Int. J. Corros. Scale Inhib., 2013, 2, no. 2, 115-121 PDF (598 K)
doi: 10.17675/2305-6894-2013-2-2-115-121

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