Cu2+-assisted etching 1 HVAF 1 HVOF 1 INCONEL718 1 L-PBF 1 PEO 1 Research & information: general 1 WC-based coatings 1 additive manufacturing 1 cermet materials 1 coatings 1 corrosion 1 drag reduction 1 durable fatty acid 1 fluoropolyurethane 1 incidence angle 1 non-fluorinated 1 plasma electrolytic oxidation 1 robust 1 roughness 1 steel 1 superhydrophobic 1 superhydrophobic/hydrophilic 1 thermal spray 1 water-harvesting 1 wear resistance 1 zinc substrate 1 zinc-aluminized 1