Unveiling the significant contribution of matrix elements to passivation behaviour and corrosion resistance of alloys by modelling approach
Source abstract
Abstract
This work elaborated the significant effect of matrix elements (Fe and Ni) on passivation behaviour and corrosion resistance of alloys containing same Cr content by experimental and modelling studies. Results indicated that each species of passive film deposited earlier on Fe base alloy than on Ni base alloy. Moreover, the nucleation and growth rates of Cr-oxide/hydroxide were similar on both alloys, but those of Fe-oxides were much higher on Fe base alloy. These agreed well with the higher thickening rate and thickness but lower Cr 2O 3 proportion of passive film on Fe base alloy, which induced its higher metastable pitting sensitivity and lower corrosion resistance.
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Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Corrosion Behavior and Inhibition · High-Temperature Coating Behaviors
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