Influence of dry micro-blasting grain quality on wear behaviour of TiAlN coated tools

Advanced Nanomechanical Test Techniques

“…Bouzakis and co-workers have performed detailed investigations into the influence of post-deposition wet micro-blasting on cutting performance of PVD coated tools, supporting their tool life data with nanomechanical testing and FEM [107][108][109]. Micro-blasting induces compressive stresses which can be beneficial in reducing wear although the results are dependent on pressure and the grain size and geometry of the abrasive materials.…”

“…For the same micro-blasting conditions and abrasive diameter the abrasion with ZrO2 is less intense than Al2O3 due to the spherical nature of the ZrO2 [107]. To investigate the influence of the developed compressive stresses on the film brittleness they performed nano-impact tests, finding impressive correlation between the results of the nano-impact tests and the cutting performance when milling hardened steel (AISI 4140) [108]. Chen and co-workers highlighted the importance of microstructure on the dynamic impact response in nano-impact of wear-resistant hard TiAlSiN and TiN thin coatings on M2 steel [110].…”

Coating Applications for Cutting Tools

“…Wet or dry abrasive blasting, also called shot peening processes are used to reduce the surface roughness and residual tensile stresses in case of CVD coatings, or to remove the droplets in case of PVD arc processes. Modification of the stress state of the coating and substrate material leads to higher reliability in the cutting operation and expands the field of application (Barbatti et al, 2009;Bouzakis et al, 2011;Bouzakis, Skordaris, Michailidis, Asimakopoulos, & Erkens, 2005;Westphal, 2005;Westphal & Sottke, 2002). Also the application of a metallic layer by using metal blasting media is a proper way to influence the tribological behavior of the cutting tool (Riedl, Schalk, Czettl, Satory, & Mitterer, 2012;Wallgram, Schleinkofer, Gigl, Thurner, & Schintlmeister, 2006).…”

Improving the Wear Resistance of Moulds for the Injection of Glass Fibre–Reinforced Plastics Using PVD Coatings: A Comparative Study

“…Tribological problems associated with the plastics moulding process can often be solved by an appropriate surface modification. Several techniques can be efficient to increase the wear behaviour of the mould cavity surface or other mechanical tools, such as ion implantation, physical vapour deposition (PVD), chemical vapour deposition (CVD), and standard diffusion processes, namely plasma nitriding [10][11][12][13].…”