Biofunctional surfaces by plasma electrolytic oxidation on titanium biomedical alloys

Journal article (2016)

Authors

S. Amin Yavari Biomaterials & Tissue Biomechanics - Mechanical, Maritime and Materials Engineering
B.S. Necula Biomechatronics & Human-Machine Control - Mechanical, Maritime and Materials Engineering
E.L. Fratila-Apachitei Biomaterials & Tissue Biomechanics - Mechanical, Maritime and Materials Engineering
J. Duszczyk ME Algemeen
I. Apachitei Biomaterials & Tissue Biomechanics - Mechanical, Maritime and Materials Engineering
Research Group
Biomechatronics & Human-Machine Control (Mechanical, Maritime and Materials Engineering) (TU Delft)
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Published Date

2016

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Biomechanical Engineering

Research Group

Biomechatronics & Human-Machine Control

Abstract

he effects of substrate composition on oxide layer properties following plasma electrolytic oxidation under similar conditions have been evaluated for α-cpTi, α/β-Ti6Al7Nb, β-Ti35Zr10Nb and β-Ti45Nb alloys. All oxidised surfaces revealed enhanced wettability, surface free energy and roughness relative to the non-oxidised surfaces. Nevertheless, the resultant oxides differed with respect to average pore size, pores density, layer chemistry and phase composition. The β-titanium alloys developed oxides with a larger average pore size and lower pore density relative to the α-cpTi and α/β-Ti6Al7Nb substrates. Anatase dominated the oxide layer formed on α-cpTi and β-Ti45Nb alloys, a mixture of anatase and rutile was present on the oxidised α/β-Ti6Al7Nb surface, whereas Ti2ZrO6 was the only phase detected on the oxidised surface of the β-Ti35Zr10Nb alloy.