Yes, the mechanical properties, wear, and corrosion behavior of high entropy alloys (HEAs) can differ significantly depending on their shape and form, such as bulk (disk shape) and coatings.
Bulk HEAs typically exhibit good mechanical properties, such as high strength, ductility, and fracture toughness, due to their unique microstructure of multiple elements in a random solid solution. On the other hand, HEA coatings, which are deposited onto a substrate, can exhibit even better mechanical properties due to the potential for tuning microstructural features such as grain size, texture, and crystallographic orientation. Additionally, HEA coatings can offer improved wear resistance due to their high hardness, good adhesion to the substrate, and self-healing ability.
In terms of corrosion resistance, both bulk HEAs and HEA coatings can exhibit excellent corrosion resistance, depending on their composition, microstructure, and environmental conditions. For example, some HEAs have shown good corrosion resistance in acidic, alkaline, and saline environments due to the formation of passive oxide layers on their surfaces.
Overall, the mechanical properties, wear, and corrosion behavior of HEAs can vary depending on their shape and form, as well as their composition and processing conditions. Therefore, it is important to consider the specific application and environment when selecting the appropriate HEA material and form.
In my works shows the influence of the cooling rate on the structure and properties of alloys. For HEA, this is especially evident when it comes to corrosion resistance
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