30 research outputs found
Glass-Ceramic Precursors in B2O3–SiO2–MxOy Systems (M — Ti, Zr, Cr) as a Source for Producing Fine-Dispersed Mixtures of High-Melting Carbides and Borides
Effect of Environment on Microstructure and Mechanical Properties of Nanostructured Metal Alloys and Composites
Influence of Hydrogen on the Mechanical Properties of Steels with the Surface Nanostructure
Atomic force microscopy investigations on nanoindentation impressions of some metals: effect of piling-up on hardness measurements
Effect of SiC interlayer between Ti6Al4V alloy and hydroxyapatite films
© IMechE 2015.Bioactive coatings are frequently used to improve the osseointegration of the metallic implants used in dentistry or orthopaedics. Among different types of bioactive coatings, hydroxyapatite (Ca10(PO4)6(OH)2) is one of the most extensively used due to its chemical similarities to the components of bones and teeth. In this article, production and characterization of hydroxyapatite films deposited on Ti6Al4V alloy prepared by magnetron sputtering were reported. Besides, SiC was deposited on substrate surface to study the interlayer effect. Obtained coatings were annealed at 600 °C for 30 and 120 min in a mixed atmosphere of N2 + H2O vapours with the heating rate of 12 °C min-1. The effects of SiC interlayer and heat treatment parameters on the structural, mechanical and corrosion properties were investigated. After heat treatment process, the crystalline hydroxyapatite was obtained. Additionally, cell viability tests were performed. The results show that the presence of the SiC interlayer contributes a decrease in surface roughness and improves the mechanical properties and corrosion performance of the hydroxyapatite coatings. Biological properties were not affected by the presence of the SiC interlayer