Influence of oxygen content on tribocorrosion of 17Mn1Si steel in a hydrogen sulfide environment

Keywords

oxygen, hydrogen sulfide, tribocorrosion, corrosion, steel, hydrogenation solution.

Cite as

Chuchman M. R., Ivashkiv V. R., Khoma M. S., Vynar V. A., Vasyliv Ch. B., Ratska N. B., and Vasyliv O. M. Influence of oxygen content on tribocorrosion of 17Mn1Si steel in a hydrogen sulfide environment. Physicochemical Mechanics of Materials. 2025. 61(6), 40-47.

https://doi.org/10.15407/pcmm2025.06.040

Abstract

Corrosion and tribocorrosion of 17G1S-U (17Mn1Si) steel in a chloride-acetate solution bubbled with hydrogen sulfide, air, and their mixtures at a ratio of partial pressures P_H2S : P_air 1:1  and 1:10 were investigated. At low oxygen concentrations, the corrosion rate of steel is lower than in a saturated hydrogen sulfide solution due to the interaction of H₂S and O₂ and a decrease in the conсentration of both components. At oxygen high concentrations, steel corrosion accelerates due to the oxidation of sulfide films on the surface and the deterioration of their protective properties. Hydrogenation of steel decreases with oxygen partial pressure increase due to decreasing sulfide concentration in the solution. Tribocorrosion of steel in the solution at a ratio of partial pressures 1:1 depends on a combination of anodic dissolution and hydrogen cracking, and at a ratio of 1:10 – mainly on anodic dissolution. The combined effect of pitting corrosion, iron oxides and hydroxides in the corrosion products determines the abrasive mechanism of tribocorrosion.

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