Mechanical properties and oxidation resistance of sputtered Cr–W–N coatings

Cr–W–N coatings were prepared through reactive direct current magnetron cosputtering at nitrogen flow ratios of 0.1–0.5. The feasibility of the surveyed Cr–W–N coatings as protective coatings on glass molding dies was evaluated by studying their mechanical properties, tribological characteristics, surface roughness, and oxidation resistance. Crystalline Cr–W–N coatings with a (200) orientation, namely Cr29W40N31, Cr24W46N30, and Cr16W57N27, were found to be suitable candidates for protective coatings. •Fcc (200) oriented Cr–W–N coatings exhibited superior mechanical properties.•Tribological characteristics were evaluated through scratch and wear tests.•Oxidation resistance was assessed through surface roughness and oxidation depth.•Cr29W40N31, Cr24W46N30, and Cr16W57N27 coatings are suitable protective coatings.