Increasing the tribological performances of Ti–6Al–4V alloy by forming a thin nanoporous TiO2 layer and hydroxyapatite electrodeposition under lubricated conditions |
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| Affiliation: | 1. Department of Dental Materials, School of Dentistry, Research Center of Nano-Interface Activation for Biomaterials, Chosun University, South Korea;2. Biomechanics & Tissue Engineering Laboratory, Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH, USA;3. Division of Restorative, Prosthetic and Primary Care Dentistry, College of Dentistry, The Ohio State University, Columbus, OH, USA;1. Centro de Investigación, Innovación y Desarrollo de Materiales CIDEMAT, Universidad de Antioquia UdeA; Calle 70 N° 52 – 21, Medellín, Colombia;2. Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan;1. Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany;2. Chair of Corrosion and Corrosion Protection, Foundry Institute, RWTH Aachen University, Intzestrasse 5, 52072 Aachen, Germany;3. Electron Microscopy Facility, Institute of Pathology, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany |
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| Abstract: | In this study, comparative investigation of (i) untreated Ti–6Al–4V alloy, (ii) nanoporous thin TiO2 layer formed by controlled anodic oxidation and (iii) electrodeposited hydroxyapatite coatings into porous oxide layer was carried out for evaluation of sliding-wear performances in a bio-simulated environment. Wear mechanisms, wear volumes and friction coefficients of the three types of surfaces under lubricated conditions in a bio-simulated solution were recorded and analyzed. The results presented herein show that, under the investigated tribocorrosion conditions (under reciprocating sliding), both surface treatments applied have improved the wear resistance and friction coefficients as compared to the untreated Ti–6Al–4V alloy surface. |
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| Keywords: | Ti–6Al–4V alloy Nanoporous oxide film Hydroxiapatite Sliding wear |
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