Revealing the corrosion mechanism of an Al0.1CoCrFeNi high entropy alloy in high temperature carbon dioxide environment
Source abstract
Abstract
The corrosion behavior of an Al 0.1CoCrFeNi HEA in high temperature CO 2 at 850 °C for different exposure periods was investigated using different characterization methods. Weight gain increased with extended exposure periods, yet it remained lower than most conventional alloys. A double-layer oxide film consisting of Cr 2O 3 and Al 2O 3 formed after 100 and 500 h of exposure, while a single layer of Cr 2O 3 developed after 1000 h of exposure. CoCrFeNi particles with an FCC structure were embedded in the oxide films irrespective of the exposure periods. Moreover, a transition zone containing numerous striped-like Al 2O 3 oxides along the grain boundaries was developed underneath the oxide films.
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Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Additive Manufacturing Materials and Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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