Mechanical, tribological, and corrosion resistant behavior of nanocrystalline diamond film deposited on M50 steel using HFCVD

Nanocrystalline diamond (NCD) films deposited through chemical vapor deposition (CVD) possess exceptional properties, making them highly useful in various technological applications, including tribology in extreme conditions. The research starts with the deposition of CrN interlayer coatings on an M50 steel substrate using an RF magnetron sputtering followed by NCD film deposition on a steel M50 using Hot-Filament CVD (HFCVD). The resulting coatings were evaluated for their tribological, mechanical, and corrosion resistant properties. Results indicate that the H/E (coating’s ability against elastic deformation) and H 3 /E 2 (resistance to plastic deformation) ratio increases with applied load. The NCD coating demonstrated exceptional corrosion protection, achieving an efficiency of 82.4%. These findings suggest that NCD coated M50 steel offers a reliable solution for complex tribological applications, particularly in the aerospace and marine sectors.