Alkoxysilanes as chamber inhibitors of zinc corrosion

• O.S. Makarova¹, P.S. Demenshina^1,2, A.Yu. Luchkin¹, O.A. Goncharova¹, N.N. Andreev¹, T.A. Vagramyan², S.S. Vesely¹ and D. Zhang³

¹ Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31-4, Leninsky prospect, 119071 Moscow, Russia
² Mendeleev University of Chemical Technology of Russia, 9 Miusskaya Sq., 125047 Moscow, Russia
³ Shanghai University of Electric Power, Shanghai 201306, China

Abstract: A series of alkoxysilanes were studied as chamber inhibitors of zinc corrosion. It was shown by corrosion and electrochemical methods that treatment of zinc in vapors of vinyltrimethoxysilane (VTMS) with proper selection of conditions resulted in the formation of polymolecular adsorption layers which increase the corrosion resistance of the metal. The optimal conditions of treatment are: the temperature was 140°C, while the duration was 1 h. Upon chamber treatment under these conditions, the protective effect of VTMS is provided due to blocking of the metal surface. In terms of the effectiveness of zinc protection, VTMS is comparable to 2-ethylhexanoic and neodecanoic acids studied previously.

Keywords: zinc, corrosion resistance, chamber treatment, alkoxysilanes, corrosion tests, electrochemical impedance spectroscopy (EIS)

Int. J. Corros. Scale Inhib., 2026, 15, no. 2, 73-87
doi: 10.17675/2305-6894-2026-15-2-5

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