The influence of carbide dissolution on the erosion-corrosion properties of cast tungsten carbide/Ni-based PTAW overlays

► Erosion-corrosion assessment of two WC-based PTAW overlays was conducted. ► The cast tungsten carbide was shown to exhibit extensive dissolution. ► Damage mechanisms for both overlays were formulated and highlighted the influence of carbide dissolution. ► Erosion-corrosion assessment also highlighted the very large influence of synergy.