Study, improvement and evaluation of electro-corrosion resistance of highly effective inhibitory compositions

Abstract

The studies on the improvement of boron nitrogen-containing compounds, as well as information on phase transformations in the system H3BO3-C3H4N2-H2O, based on the solubility isotherms consisting of three branches, are presented. Based on the analysis of the second branch, a new boratimidazole compound was found. A full description of its properties is given. Furthermore, the paper presents the studies on the effect of boratimidazole and emidazole on the corrosive electrolytic behavior and the main characteristics of the cyclic strength of pre-eutectoid carbon steel in neutral media. It is found that the introduction of emidazole and boratimidazole into corrosive media reduces the ionization rate of steel, reduces the density of the anode current in the passive state region and increases the main characteristics of the cyclic strength of the metal. It has been shown that emidazole has a lower inhibitory ability than boratimidazole. The obtained experimental results of gravimetric studies, electrochemical changes and corrosion-fatigue tests are in good agreement with each other and with the previously obtained data. Boratimidazole is a quite effective corrosion inhibitor and can be used to protect ferrous metals and their alloys. The development of new effective, environmentally friendly corrosion inhibitors based on boron-containing compounds is an important scientific and technical task. To develop new compositions of anticorrosive reagents, the method of physical and chemical analysis, which is the scientific basis of modern materials science, is used in this work.