Comparative Studies of the Anticorrosive Activity of Oily Compositions, Containing Telaz-M, in Outdoor Conditions

Abstract

To protect metal surfaces from the atmospheric corrosion the film-forming inhibitors are applied. This work presents the comparative analysis findings of the protective abilities of such corrosion inhibitors as preserving oil M-8V2 and composition on the basis of an oil-soluble inhibitor Telaz-M and M-8V2 oil. It is demonstrated that the oil composition, containing 20% of Telaz-M inhibitor, has high protective action against atmospheric corrosion for steel of grade St20 and alloy steel St12X18H10T. The protective action of the composition is explained by the formation on a steel plate’s surface of a film, which is an inverted emulsion (water in oil). This means that the drops of water, present on the metal surface, are encapsulated in the inhibitor’s oily solution, forming an emulsion. As a result, the metal contacts not with water, but with the oily solution of the inhibitor. The adding of Telaz-M increases the composition’s viscosity, which forms a thicker protective film on the surface of a steel plate.