Mechanisms of passivation and chloride-induced corrosion of mild steel in sulfide-containing alkaline solutions
- Journal Article
Rights / licenseCreative Commons Attribution 4.0 International
The pore fluid within many concretes is highly alkaline and rich in reduced sulfur species, but the influence of such alkaline-sulfide solutions on the surface film formed on steel reinforcement is poorly understood. This study investigates the critical role of HS− in defining mild steel passivation chemistry. The surface film formed on the steel in alkaline-sulfide solutions contains Fe(OH)2 and Fe–S complexes, and the critical chloride concentration to induce corrosion increases at high sulfide concentration. However, this behavior is dependent on the duration of exposure of the steel to the electrolyte, and the nature of the sulfidic surface layer. Show more
Journal / seriesJournal of Materials Science
Pages / Article No.
Organisational unit09593 - Angst, Ueli / Angst, Ueli
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