Study on anisotropic oxide formation rate in the initial corrosion stage of 90Cu-10Ni alloy in alkaline NaCl solution by experiments and first-principles calculation
Source abstract
Abstract
Corrosion of 90Cu-10Ni alloy is related to oxide film formed in seawater. We characterize the initial oxides formed on different grains immersed in alkaline NaCl solution and reveal grain-orientation dependent Cu 2 O formation rate of (001) < (101) < (111) which causes Volta potential reversal among grains. We also implement the first-principles calculation on (001), (101) and (111) surfaces with monoatomic steps and demonstrate that anisotropic Cl adsorbing capacity and Cu dissolving capacity are responsible for different oxidation rates. Our results provide insights to optimize corrosion properties of conventional alloys on the concept of homogenizing oxide film by tailoring surface texture.
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Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Anodic Oxide Films and Nanostructures · ZnO doping and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (56)
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