Abstract
The purpose of this study is the surface modification of Ti10Mo8Nb experimental alloy by using TiO2 nanostructure growth. Ingots of the Ti10Mo8Nb experimental alloy were produced by fusion from sheets of molybdenum, niobium, and titanium commercially pure in an arc melting furnace under argon atmosphere. The potentiostatic anodic oxidation was performed using an electrolyte formed of glycerol and H2O (1: 1 by vol.) with the addition of 2.7% (w/v) NH4F under 20 V for 3 h at room temperature. After the surface treatment, the samples were annealing. The surface of the alloy was analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD), contact angle, surface energy measurements. In vitro studies, such as cell and bacterial adhesion, were performed to evaluate the response of this treatment. The Ti10Mo8Nb alloy exhibited beta phase after the processing. After the surface treatment, a nanoporous layer of TiO was obtained. The anatase phase was found in the annealed samples (450 oC for 3 hours). In vitro analyzes showed cell growth viability and decreased bacterial proliferation due to the larger specific surface area.
Highlights
IntroductionBiometallic materials (stainless Steel, cobalt-chromium and titanium alloys) have been extensively studied for replacing hard tissues due to excellent bulk properties.Among titanium alloys, Ti10Mo8Nb alloy has been evaluated for biomedical applications due to excellent mechanical properties
Biometallic materials have been extensively studied for replacing hard tissues due to excellent bulk properties.Among titanium alloys, Ti10Mo8Nb alloy has been evaluated for biomedical applications due to excellent mechanical properties
It has been reported to have good corrosion resistance due to the addition of niobium to Ti-Mo alloy 2. This alloy exhibited no cytotoxic effects on MC3T3-E1 preosteoblasts cells and no significant inflammatory response 3. Besides these properties, the success of metallic implants after insertion into the human body is to related to surface properties, such as surface energy, chemical composition, and topography
Summary
Biometallic materials (stainless Steel, cobalt-chromium and titanium alloys) have been extensively studied for replacing hard tissues due to excellent bulk properties.Among titanium alloys, Ti10Mo8Nb alloy has been evaluated for biomedical applications due to excellent mechanical properties. Studies with Ti-Mo-Nb alloys with the composition near the Ti10Mo8Nb alloy exhibited the low modulus of elasticity (less than 30 GPa) and high hardness (394 to 444 GPa) when compared to commercially pure titanium 1. It has been reported to have good corrosion resistance due to the addition of niobium to Ti-Mo alloy 2. This alloy exhibited no cytotoxic effects on MC3T3-E1 preosteoblasts cells and no significant inflammatory response 3. Besides these properties, the success of metallic implants after insertion into the human body is to related to surface properties, such as surface energy, chemical composition, and topography. Surface modification techniques could be a viable alternative to obtaining desired properties
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