Competition between thermodynamics, kinetics and growth mode in the early-stage oxidation of an equimolar CoCrFeNi alloy
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DOI: 10.1016/j.actamat.2020.06.056
Abstract: Abstract We demonstrate that the early-stage oxidation of a CoCrFeNi multi-principal element alloy depends upon competition between kinetic and thermodynamic factors involving the relative diffusion rate of cations and oxygen, and how this couples to… read more here.
Keywords: thermodynamics; corundum; stage oxidation; early stage ... See more keywords
Decomposition behavior in the early-stage oxidation of Sm2Co17-type magnets
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DOI: 10.1016/j.scriptamat.2021.113911
Abstract: Abstract Irredeemable magnetic loss caused by oxidation remains a critical concern for the application of Sm2Co17-type permanent magnets. Herein, oxygen induced decomposition in the early-stage oxidation of a Sm(CobalFe23.5Cu4.9Zr1.7)7.5 magnet is studied using aberration-corrected TEM.… read more here.
Keywords: oxidation; sm2co17 type; early stage; stage oxidation ... See more keywords
Initial-Stage Oxidation of Ni3Al(100) and -(110) from Ab Initio Thermodynamics
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DOI: 10.1021/acs.jpcc.7b04674
Abstract: The microscopic mechanisms of the initial-stage oxidation of the Ni3Al(100) and Ni3Al(110) surfaces are comparatively studied using ab initio calculations based on density-functional theory and thermodynamics considerations. The surface energies of the two surfaces as… read more here.
Keywords: ni3al 100; initial stage; stage oxidation; thermodynamics ... See more keywords