Microstructure and properties of FeCoNiCr and FeCoNiCrW high entropy alloy coatings by electro-deposition
Source abstract
Abstract
The FeCoNiCr and FeCoNiCrW high-entropy alloy coatings, comprising a single solid solution, were successfully obtained by electro-deposition. The microstructure, microhardness, wear properties and corrosion behaviors of both coatings were investigated. The results revealed that both coatings consisted of amorphous phases and the component elements existed as metals and their oxides. Compared with the FeCoNiCr coating, the FeCoNiCrW coating exhibited superior mechanical properties attributed to solution strengthening. Specifically, the microhardness of the FeCoNiCrW coating was 35.9 % higher, and the width of the worn tracks was 8.3 % smaller than those of the FeCoNiCr coating. However, the FeCoNiCrW coating showed more serious adhesive wear than that of FeCoNiCr coating due to its thinner coating which was worn out during wear. The FeCoNiCrW coating has the highest corrosion resistance and the lowest corrosion rate compared to 304 stainless steel and FeCoNiCr coating in 3.5 % NaCl solution, attributed to the formation of a highly stable and resistant passive film.
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Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Surface Treatment and Coatings
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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