An Insight into TiN, TiAlN and AlTiN Hard Coatings for Cutting Tools

Abstract

Hard coatings can be grown on the tool surface at a maximum deposition temperature of 1000°C for CVD and 500°C for PVD. The thickness of CVD and PVD coatings can be over 20 μm, and up to 10-15 μm, respectively. In industrial production, 0.5-4 μm thick PVD coatings are usually selected for specific applications. Coating architecture can be designed as a single layer, multilayer, graded, nanostructured or nanocomposite layer.