Title: Spectroelectrochemical Comparison of Elemental Resolved non-confined and Crevice Corrosion of Nickel Base Alloys
Authors: Dworschak, Dominik  
Cheng, Hsiu-Wei 
Ku, Ching-Shun 
Chiang, Ching-Yu 
Lin, Chia-Hsien 
Valtiner, Markus 
Category: Original Research Article
Issue Date: Sep-2021
Dworschak, D., Cheng, H.-W., Ku, C.-S., Chiang, C.-Y., Lin, C.-H., & Valtiner, M. (2021). Spectroelectrochemical Comparison of Elemental Resolved non-confined and Crevice Corrosion of Nickel Base Alloys. Corrosion Science. https://doi.org/10.1016/j.corsci.2021.109629
Journal: Corrosion Science 
ISSN: 0010-938X
Passive film properties of nickel-base-alloys (NBAs) have been studied extensively, yet elemental resolved dissolution currents under corrosive conditions are less well studied. Here, we compare elemental dissolution currents during anodic polarization and repassivation under crevice and freely-exposed conditions for various NBAs using an ICP-MS flow-cell approach. With a new sample design we can track communication of a crevice environment with the electrolyte, providing insight into crevice solution chemistry and solubility of passive film-forming elements. Data indicates Mo can only form stable precipitate layers under openly corroding conditions. Local elemental depletion was further examined by XPS and nanometer resolved XRF.
Keywords: Nickel Base Alloy; ICP-MS; Restricted (confined) corrosion; Localized corrosion; Oxide breakdown; Synchrotron-XRF
DOI: 10.1016/j.corsci.2021.109629
DOI: 10.34726/1141
Organisation: E134-02 - Forschungsbereich Applied Interface Physics 
License: CC BY 4.0 CC BY 4.0
Publication Type: Article
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