Application of the Electrochemical Permeation Method for Hydrogen Diffusion Coefficient Determination in Pipeline Steel 10G2

In this article, we conduct research on the effect of corrosion tests on the hydrogen diffusion process in gas steel in electrochemical permeability tests. This tests show that a long corrosion test time reduces the hydrogen diffusion coefficient by an order of magnitude, indicating the formation of...

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Bibliographic Details
Published in:Coatings (Basel) 2021-10, Vol.11 (10), p.1260
Main Authors: Borodin, Vladislav I., Lun-Fu, Aleksandr V., Kudiiarov, Victor N., Lider, Andrey M., Sakvin, Ivan S., Bubenchikov, Mikhail A., Kaparulin, Dmitry S., Ovchinnikov, Vyacheslav A.
Format: Article
Language:English
Subjects:
Aging (metallurgy)
Carbon
Corrosion
Corrosion effects
Corrosion tests
Defects
Diffusion
Diffusion coefficient
Grain boundaries
Hydrogen
Materials failure
Permeability
Pipelines
Steel
Stress corrosion cracking
Structural steels
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Summary:In this article, we conduct research on the effect of corrosion tests on the hydrogen diffusion process in gas steel in electrochemical permeability tests. This tests show that a long corrosion test time reduces the hydrogen diffusion coefficient by an order of magnitude, indicating the formation of aging defects in the steel. During operation, the diffusion coefficient decreases by two orders of magnitude, which also indicates the formation of a large number of defects in the steel. Consequently, based on the change in the diffusion coefficient in the material, it is possible to assess the degree of material failure.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings11101260