Effect on thermal oxidation in TiO2 nanostructures on nanohardness and corrosion resistance

This article aimed to analyze the effect of the thermal oxidation in the corrosion resistance and the hardness properties of TiO2 nanostructures obtained by the anodizing process in the HF/H3PO4 solution. TiO2 nanostructures on Ti6Al4V obtained by anodizing processes were subjected to thermal oxidat...

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Published in:Ingeniare : Revista Chilena de Ingenieria 2020-09, Vol.28 (3), p.362-372
Main Authors: Muñoz-Mizuno, Andrea, Cely-Bautista, Mercedes, Jaramillo-Colpas, Javier, Hincapie, Duberney, Calderón-Hernández, José Wilmar
Format: Article
Language:English
Subjects:
Anodizing
Biocompatibility
Corrosion effects
Corrosion resistance
Electrochemical impedance spectroscopy
Electrodes
Electrolytes
ENGINEERING, MULTIDISCIPLINARY
Investigations
Mechanical properties
Morphology
Nanohardness
Nanoindentation
Nanostructure
Oxidation resistance
Porosity
Power supply
Scanning electron microscopy
Software
Spectrum analysis
Substrates
Surface properties
Titanium alloys
Titanium base alloys
Titanium dioxide
Transplants & implants
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container_title Ingeniare : Revista Chilena de Ingenieria
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creator Muñoz-Mizuno, Andrea
Cely-Bautista, Mercedes
Jaramillo-Colpas, Javier
Hincapie, Duberney
Calderón-Hernández, José Wilmar
description This article aimed to analyze the effect of the thermal oxidation in the corrosion resistance and the hardness properties of TiO2 nanostructures obtained by the anodizing process in the HF/H3PO4 solution. TiO2 nanostructures on Ti6Al4V obtained by anodizing processes were subjected to thermal oxidation (TO) treatments over a temperature range from 500 °C to 620 °C for 2 hours. Surface morphology was evaluated by using scanning electron microscopy; the hardness properties of TiO2 nanostructures were obtained by Nanoindentation measurements using a Berkovich probe with a tip radius of 150 mm. The corrosion behavior of the samples was studied using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results showed that TiO2 nanostructures, modified by thermal oxidation, increased the surface properties of hardness and corrosion resistance, compared to the substrate, maintaining its mixed or tubular structure. On the other hand, a transformation of nanotubes to nanopores after 600°C was evidenced, generating significant changes in the mechanical properties of these structures.
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ispartof Ingeniare : Revista Chilena de Ingenieria, 2020-09, Vol.28 (3), p.362-372
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0718-3291
0718-3305
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subjects Anodizing
Biocompatibility
Corrosion effects
Corrosion resistance
Electrochemical impedance spectroscopy
Electrodes
Electrolytes
ENGINEERING, MULTIDISCIPLINARY
Investigations
Mechanical properties
Morphology
Nanohardness
Nanoindentation
Nanostructure
Oxidation resistance
Porosity
Power supply
Scanning electron microscopy
Software
Spectrum analysis
Substrates
Surface properties
Titanium alloys
Titanium base alloys
Titanium dioxide
Transplants & implants
title Effect on thermal oxidation in TiO2 nanostructures on nanohardness and corrosion resistance
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