Effect of Ni on the oxidation behavior of corrosion products that form on low alloy steel exposed to a thin electrolyte layer environment

The oxidation behavior of corrosion products that form on Ni-containing low alloy steel was investigated by electrochemical polarization curves, scanning electron microscopy, electron probe micro-analyzer, X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. The...

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Bibliographic Details
Published in:Corrosion science 2022-09, Vol.206, p.110471, Article 110471
Main Authors: Jiang, Shan, Cao, Jian-ping, Liu, Zhi-yong, Xu, Xue-xu, Yang, Jian-wei, Li, Xue-tao
Format: Article
Language:English
Subjects:
Amorphous substance
Green Rust
Ni effect
Oxidation behavior
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Summary:The oxidation behavior of corrosion products that form on Ni-containing low alloy steel was investigated by electrochemical polarization curves, scanning electron microscopy, electron probe micro-analyzer, X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. The corrosion products were oxidized to Green Rust containing Cl- (Green Rust(Cl-)) and an amorphous substance, which were produced in an ordinary- and negative-pressure environment, respectively. The enrichment of Ni in the corrosion product could inhibit two oxidation reactions of the corrosion product, especially inhibiting the formation of amorphous substances. In addition, oxygen reduction could be also suppressed via the enrichment of Ni. •The oxidation behavior of corrosion product formed on experimental steels was investigated.•Ni in the rust can inhibit the oxidation of corrosion product.•Ni prefer to inhibit the formation of amorphous substance.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2022.110471