Corrosion resistant body-centered cubic VNbTa refractory medium-entropy alloy
Source abstract
Abstract
The corrosion behavior of VNbTa medium-entropy alloy (MEA) was investigated by electrochemical measurement and first-principles calculation. Due to the synergism of higher bond strength and higher oxygen or OH adsorption heat among constituent elements, the MEA has better corrosion resistance than 316 L stainless steel. The stability passive film was related to the high-valent oxides (V 2O 5, Nb 2O 5, and Ta 2O 5 ). The calculation results show that VNbTa MEA has a high work function and adsorption energy for O, and the formation of initial passive film is mainly determined by the bonding of surface Ta, V atoms and O atoms.
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Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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