Effect of Environmental Factors on Hydrogen Absorption into Steel Sheet under a Wet-dry Cyclic Corrosion Condition

The effects of temperature and chloride deposition on hydrogen absorption into steel were evaluated during wet/dry cyclic corrosion using a temperature-compensated monitoring system based the electrochemical permeation method. Hydrogen was detected through measurement currents wet periods under corrosion. enhancement mainly caused by changes in solution chemistry wetting drying periods, with decrease pH due to hydrolysis reaction Fe3+ at high Cl− concentration. increased increasing deposition. reasons for increment are considered that evolution potential shifted less noble increase electrolyte thickness Based these results, amount absorbed map effected factors atmospheric environment described.