2022
DOI: 10.1016/j.susc.2022.122124
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Surface oxidation mechanism of CoCrFeNi high entropy alloy

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Cited by 12 publications
(4 citation statements)
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“…As illustrated in Figure 1 b, which shows the number of occurrences where the various constituent metals were found to be nearest neighbors to chemisorbed oxygen atoms, Cr exhibits the highest occurrence, followed by Fe and Co, while Ni shows the lowest occurrence. This trend reflects the high oxidation tendency of Cr and the low oxidation tendency of Ni, aligning with recent findings on the metal oxidation propensity in the CoFeNiCr HEA [ 44 , 65 ]. This non-uniform oxidation tendency is also reflected on the adsorption behavior of each constituent metal toward oxygen or oxygen-containing adsorbates.…”
Section: Resultssupporting
confidence: 91%
See 1 more Smart Citation
“…As illustrated in Figure 1 b, which shows the number of occurrences where the various constituent metals were found to be nearest neighbors to chemisorbed oxygen atoms, Cr exhibits the highest occurrence, followed by Fe and Co, while Ni shows the lowest occurrence. This trend reflects the high oxidation tendency of Cr and the low oxidation tendency of Ni, aligning with recent findings on the metal oxidation propensity in the CoFeNiCr HEA [ 44 , 65 ]. This non-uniform oxidation tendency is also reflected on the adsorption behavior of each constituent metal toward oxygen or oxygen-containing adsorbates.…”
Section: Resultssupporting
confidence: 91%
“…the CoFeNiCr HEA [44,65]. This non-uniform oxidation tendency is also reflected on adsorption behavior of each constituent metal toward oxygen or oxygen-containing sorbates.…”
Section: Surface Oxygen Coverage Impact On Oer Intermediate Adsorptionmentioning
confidence: 99%
“…published a report about the oxidation mechanisms of CoCrFeNi from both experimental and theoretical considerations. [ 53 ] In this study it was shown that the oxidation tendency in this HEA is the strongest for Cr, followed by Fe and Co and is rather weak for Ni. From theoretical investigations it is demonstrated that oxygen atoms migrate toward Cr‐ and Fe‐rich sites and away from Ni.…”
Section: Resultsmentioning
confidence: 75%
“…The appearance of this phase in longer milled samples must be linked with an increased diffusion coefficient of chromium during milling time. Oxygen appears in the material, especially after the sintering process due to surface oxidization [41]. Oxygen reacts with chromium significantly faster than with other elements.…”
Section: Structural Transformation In Mechanically Alloyed and Sinter...mentioning
confidence: 99%