Unravelling the role of calcareous deposits on hydrogen uptake: The duality in the calcite behavior
Source abstract
Abstract
The permeation of hydrogen in carbon steel immersed in deaerated NaCl and artificial seawater solutions under various cathodic polarization is investigated using the Devanathan and Stachurski method combined with in-situ electrochemical impedance spectroscopy (EIS). The results indicate calcite`s dual role in hydrogen uptake: it promotes uptake for bare samples and lower cathodic currents, but inhibits it for preformed deposits and higher cathodic currents. Deposits are characterized through in-situ EIS and scanning electron microscopy, providing further insights into the specific morphology of calcite. These findings are correlated with hydrogen permeation results, elucidating a mechanism for the dual behavior of calcite.
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Research context
OpenAlex topics: Calcium Carbonate Crystallization and Inhibition · Corrosion Behavior and Inhibition · Mine drainage and remediation techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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