Effects of pH and Cr content of materials on flow-accelerated corrosion and their prediction
Source abstract
Abstract
The efficient management of flow-accelerated corrosion (FAC) occurring in power plant piping requires a deeper understanding of the mechanism underlying FAC. In this study, FAC tests were conducted on carbon steels with different Cr contents in flowing water at 418 K to evaluate the overlapping effects of various factors. In aqueous solutions with pHs 7–9.8, the FAC rate and the dissolved oxygen concentration required for FAC suppression decreased with increasing Cr content. Cr in the material accumulates in the outermost layer of the oxide film as FAC progresses, and the accumulation is found to be more enhanced in neutral solutions than in alkaline solutions. This finding is consistent with our FAC model.
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Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Metallurgical Processes and Thermodynamics · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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