Corrosion of thin hard PVD coatings

Thermal Treatment Effects on Microstructure and Mechanical Properties of TiAlN Thin Films

“…In fact, under high bias the defect creation rate becomes higher than the defect annihilation rate during the successive collisions of the energetic particles [16], thus promoting, void-containing structures. The preferential growth orientation of high-biased films was along (111), having more interstitial sites [35,36], and favouring weak column boundaries where dislocations may be formed more easily than in the (200) oriented columns.…”

Study of the corrosion resistance and in vitro biocompatibility of PVD TiCN-coated AISI 316 L austenitic stainless steel for orthopedic applications

“…Thus, it does have a positive effect on the pitting corrosion resistance in comparison with the bare material. Deposition process parameters such as substrate bias, temperature and current density may be controlled in order to obtain a more compact, denser and corrosion resistant PVD layer [45,46]. PVD multilayered coatings are a recent architecture that has been shown to increase the corrosion resistance of coated metals [47,48].…”

Microstructure and electrochemical behavior of Ti-coatedZr55Al10Ni5Cu30 bulk metallic glass

“…The corrosion in PVD coatings takes place preferentially through pinholes, voids or other defects, which provide an easy fracture path for adhesion failure, allowing contact of the substrate with electrolyte [21,22]. In order to lessen the coating defects and enhance the corrosion resistance, many researchers have devoted themselves to adjusting deposition parameters [23] or preparing multilayer coatings [24][25][26][27][28][29][30]. Interfacial integrity and adhesion of the PVD coatings are considered to be important properties and can be enhanced by the presence of an appropriate interlayer.…”