Effects of Duty Cycle on Nanostructured TiN Coatings on AISI H11 and AISI D2 Steels

This study focuses on the effects of duty cycle on morphology, hardness, structure, corrosion resistance, and chemical composition of nanostructured titanium nitride (TiN) coatings deposited by plasma-assisted chemical vapor deposition (PACVD) on two tool steels AISI H11 hot work and AISI D2 cold work. The PACVD was performed at 475 °C for 2 h in a chamber containing Ar, N2, and H2 gases along with TiCl4 vapor at a pressure of 2 mbar, for various duty cycles of 33, 50 and 60