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- Title
Evaluation of Hydrogen Permeation into High-Strength Steel during Corrosion in Different Marine Corrosion Zones.
- Authors
Xu, Yong; Huang, Yanliang; Cai, Fanfan; Wang, Zhengquan; Lu, Dongzhu; Wang, Xiutong; Yang, Lihui
- Abstract
Hydrogen permeation into high-strength steel during the corrosion process can deteriorate their mechanical properties, thus seriously threatening the safety of steel structures. However, the hydrogen permeation behavior of steels in corrosive marine environments is not well understood. In this study, the hydrogen permeation behavior and mechanism of AISI 4135 steel in different marine corrosion zones was investigated for the first time using an in situ hydrogen permeation monitoring system via outdoor and indoor tests. The three-month outdoor hydrogen permeation test showed that the diffusible hydrogen content of the steels exposed to the marine atmospheric, splash, tidal and immersion zone was 3.15 × 10−3, 7.00 × 10−2, 2.06 × 10−2 and 3.33 × 10−2 wt ppm, respectively. Meanwhile, results showed that the hydrogen permeation current density was positively correlated with the corrosion rate of the steel in the marine environments. This research is of great significance for guiding the safe application of high-strength steel in the marine environments.
- Subjects
SEAWATER corrosion; HYDROGEN; STEEL corrosion
- Publication
Applied Sciences (2076-3417), 2022, Vol 12, Issue 6, p2785
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app12062785