ISSN 2305-6894

Screening of individual organic compounds as chamber corrosion inhibitors

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A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071 Moscow, Russian Federation

Abstract: The effect of chamber treatment in the vapors of nitrogen-containing bases, benzothiazole and triazole derivatives, as well as carboxylic acids on the corrosion resistance of zinc, steel, copper, brass, aluminum and magnesium alloys under periodic moisture condensation conditions was studied. Corrosion screening showed that carboxylic acids with branched hydrocarbon chains are promising compounds for the creation of efficient chamber corrosion inhibitors (CIN) for zinc and aluminum alloys. However, their use is unacceptable for the chamber treatment of items containing copper, brass and magnesium parts. Octadecylamine demonstrates high efficiency in the protection of steel and copper items. It is essential that it also inhibits to some extent the corrosion of the other materials studied. This allows us to consider this compound as a basis for creating versatile mixed CINs. Lauric acid, which provides more than a tenfold inhibition of corrosion initiation on all the materials studied, except for the aluminum alloy, may be yet another potential component for versatile CINs. However, the protective properties of this CIN are quite pronounced even on this alloy. Altax, which proved itself as a contact inhibitor of these materials, is promising for the chamber protection of items made of copper and its alloys.

Keywords: zinc, steel, copper, brass, aluminum, magnesium, atmospheric corrosion, corrosion inhibitors, chamber corrosion inhibitors

Int. J. Corros. Scale Inhib., , 11, no. 1, 257-265
doi: 10.17675/2305-6894-2021-11-1-14

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