Titanium alloys are one of the most preferred materials in the aerospace industry due to their low density and high mechanical properties. It is also widely preferred in diving and marine equipment due to its excellent corrosion resistance in the marine environment. Due to its high biocompatibility and corrosion resistance, it is also used as a basic component of the biomedical materials sector, especially as implant material. However, titanium alloy has poor wear resistance, so surface treatment is required before use in many applications. In this respect, coated titanium alloys are expected to exhibit higher wear and corrosion resistance. In this study, TiAlN, AlCrN, TiSiN and TiN coatings were applied to the samples using Ti6Al4V alloy as the base material by PVD method at two different coating thicknesses, followed by micro-scratch and corrosion tests on the coated samples. As a result of the micro-scratch tests, it was determined that the indentation depth of the samples increased with the increase in the applied dynamic force, the average friction coefficient values varied between 0.08 and 0.16, and the results of the corrosion tests showed that the cathodic current densities of the coating samples varied considerably compared to the base material. Among the corrosion samples, the closest current density to the base material was observed in the thin AlCrN coating, while the lowest corrosion rate was observed in the thick TiN coating.
No takes yet. Share an insight, caveat, or question.
Ada et al. (2023) studied this question.