Effect of Sulfides on the Hydrogen Overvoltage and Hydrogenation of U8 Steel in Chloride-Hydrogen-Sulfide Media

We study the effect of FeS, FeS 2 , and Fe 9 S 8 sulfide films on the corrosion rate and hydrogenation of U8 steel with different structures in chloride-acetate solutions. It is shown that these parameters increase with changes in the nonequilibrium structure of steel. Sulfide films formed on steel...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2018-05, Vol.53 (6), p.761-768
Main Authors: Khoma, М. S., Holovei, S. А., Ivashkiv, V. R., Vasyliv, Kh. B.
Format: Article
Language:English
Subjects:
Carbon tool steels
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion effects
Corrosion rate
Deceleration
Depolarization
Economic impact
Hydrogen storage
Hydrogenation
Materials Science
Overvoltage
Pyrite
Solid Mechanics
Steel corrosion
Steel structures
Structural Materials
Sulfides
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Summary:We study the effect of FeS, FeS 2 , and Fe 9 S 8 sulfide films on the corrosion rate and hydrogenation of U8 steel with different structures in chloride-acetate solutions. It is shown that these parameters increase with changes in the nonequilibrium structure of steel. Sulfide films formed on steel decelerate the anodic processes and accelerate the cathodic processes. The formation of kansite films on the steel surface is accompanied by a significant decrease in the overvoltage of hydrogen depolarization and makes the process of hydrogenation about five times more intense. The effect of sulfide films on the electrode processes and hydrogenation in chloride-acetate solutions depends on the structure of the metal on the surface of which they are formed.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-018-0133-z