fig13

Figure 13. Cross-sectional microstructure and tribological properties of laser-cladded WMoTaNbV refractory high-entropy alloy coatings on TC4 substrate. (A-D) Cross-sectional SEM images of the coating fabricated at 3.7 kW, showing (A) the overall coating morphology and the microstructures of the (B) top, (C) middle, and (D) bottom regions; (E-H) Tribological results of the TC4 substrate and coatings fabricated at different laser powers, including (E) microhardness profiles, (F) friction coefficient curves, (G) wear-volume loss, and (H) wear rate and wear resistance. This figure is adapted from Ref.^[204]. Licensed under CC-BY 4.0. BCC: Body-centered cubic; SEM: scanning electron microscopy.