Journals Proceedings

Abstract

In this study, the influences of different coatings on wear and scratch performances in simulated body fluid (SBF) solution were investigated. SiO2/TiO2 multilayer, TiO2 and SiO2 coatings were deposited on CP-Ti by solgel dip coating process and calcined at 700°C. The phase structure, crosssectional morphology, composition, wear track morphologies, adhesion properties, hardness and roughness of uncoated and coated samples were characterized with Xray diffraction, scanning electron microscopy (SEM), scratch tester and 3D profilometer. Also, the tribological performances of all samples were investigated by a pin-on-disc tribo-tester against Al2O3 ball in SBF. Results showed that hardness, wear and adhesion resistance of multilayer coated samples were higher than untreated CP-Ti. It was found that the values of these three properties of SiO2/TiO2 multilayer coatings were higher than other coatings. Additionally, the lowest friction coefficient and wear rates were obtained on SiO2/TiO2 multilayer coatings. Therefore, it was seen that phase structure, hardness and film adhesion were important factors on the tribological properties of multilayer coatings.