Corrosion Protection of Metallic Surfaces in Peroxide – Surfactant Formulations

Abstract

Abstract Formulations containing surfactants and oxidizing agents can be used to neutralize hazardous material from different surfaces contaminated in cases of chemical aggressions. The formulations act chemically through different mechanisms on hazardous materials, transforming them into inactive agents. The surfactants are used to solubilise the slightly soluble chemical warfare agents and catalyse their decontamination. In this work we evaluated the stability of surfactants in hydrogen peroxide solutions, the surface active properties of surfactants system and also performed a study of the different types of surfactants, including amino acid-based surfactants, and corrosion inhibitors in an aqueous solution of hydrogen peroxide to identify the mixture that better protect the surfaces against corrosion. Corrosion tests were performed on cast iron and aluminum surface, evaluating the pinching, staining as well as staining color intensity of the surface at 24 hours after the solution is deposited on the surface. Based on the results obtained, formulations containing a system of three surfactants and a corrosion inhibitor in an aqueous solution of hydrogen peroxide were selected.