Модификация аустенитно-мартенситной стали ВНС-5 ионно-пучковыми и химическими методами. Анализ электрохимических свойств

Abstract

The study describes experimental results on electrochemical behavior of the austenitic-martensitic steel VNS-5 modified through either chemical passivation or ion-beam treatment. By means of Tafel extrapolation method, the corrosion resistance in marine environment (3.5 wt. % NaCl) was examined. The highest polarization resistance was obtained for the sample treated by Cr+ -ions, while the passivated (in the dichromate solution) sample exhibited practically the same corrosion current as initial (mechanically polished) sample