Evaluation of Hydrogen Permeation into High-Strength Steel during Corrosion in Different Marine Corrosion Zones

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.

Study on corrosion, hydrogen permeation, and stress corrosion cracking behaviours of AISI 4135 steel in the tidal zone

“…In our previous study, we determined a positive correlation between the hydrogen permeation current of the steel and the ambient temperature under marine The units of capacitance and resistance are Ω cm -2 s -n and Ω cm 2 , respectively. atmospheric corrosion conditions 36 . There are more factors that affect the hydrogen permeation into steel in tidal zone than in atmospheric zone, e.g., tides and fouling organisms.…”

“…14. The hydrogen permeation device was a three-electrode cell, and the detailed structure has been described in our previous study 36 . The exterior of the device was sealed by threaded members and epoxy resin, and the exposure area on the outer surface was 43.98 cm 2 .…”

Combining Electrochemical and Theoretical Analysis to Evaluate Hydrogen Permeation Inhibitors During Free Corrosion

“…In recent work 6 , the authors used a modified Devanathan-Stachurski (D-S) cell, where loading of hydrogen occurred during freely corroding steel dissolution in a pickling process employing a high concentration of hydrochloric acid (16.5%). In another study 24 the authors designed a device to assess hydrogen permeation into steel during free corrosion in marine environments.…”

Dynamic Modeling and Robust Adaptive Sliding Mode Controller for Marine Cable-Driven Parallel Derusting Robot

“…With the trend of economic globalization, more and more ships are used for the development of marine business. The sea contains a variety of different marine organisms and compounds, which can be adsorbed to the outer surface of the ship and corrode the hull [1]. Long-term corrosion will increase the sailing resistance of the ship, and consequently affect the navigation efficiency of the ship.…”