Abstract
Potentiometry, atomic force microscopy, X-ray photoelectron spectroscopy, and microhardness measurements have been used to study the effect of oxygen ion implantation on the physicochemical structure of the surface and the corrosion-electrochemical behavior of high-chromium Fe-13Cr steel. It has been established that ion implantation leads to a significant reduction in material corrosion losses. Optimal from the point of view of surface passivation and, consequently, reduction of corrosion losses of the material is the regime of steel treatment with oxygen ions with a dose of D = 5·1016 cm–2 after which the sample demonstrates the most stable behavior during local and continuous corrosion. It is shown that the increase in the corrosion resistance of steel is due to the redistribution of elements in the surface layers of the samples caused by ion implantation and the intensive formation of spinels of variable composition, consisting of iron and chromium oxides with different oxidation states. In this case, the microhardness of the surface layers of the steel after ion implantation does not change significantly.
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