Применение ингибиторов с наночастицами оксида цинка для высокоуглеродистой стали в коррозионных средах

Abstract

This work aims to evaluate the corrosion protection effect of zinc oxide nanoparticles, pectin and thiourea on high carbon steel in different corrosion media. And under the action of pectin and thiourea, the change of the corrosion inhibition performance of zinc oxide nanoparticles. The study was carried out by two methods, gravimetric method and voltammetric method. The research results show that the three types of corrosion inhibitors have slowing effect on the corrosion process of the steel in the mixture of hydrochloric acid and nitric acid, 1M HCl and 1M NaCl. Existence of pectin component can strengthen the performance of zinc oxide nanoparticles in neutral medium, and the thiourea component can strengthen its performance in acidic medium. It is worth noting that in a high-concentration corrosive environment (such as hydrochloric acid: nitric acid: water = 2:3:5), the presence of pectin and thiourea will reduce the corrosion inhibition performance of zinc oxide nanoparticles.