Biofunctional surfaces by plasma electrolytic oxidation on titanium biomedical alloys. (2nd June 2016)

• Record Type: Journal Article
• Authors: Yavari, S. A.; Necula, B. S.; Fratila-Apachitei, L. E.; Duszczyk, J.; Apachitei, I.
• Is Part Of: Surface engineering. Volume 32:Number 6(2016)
• Page Start: 411
• Page End: 417
• Publication Date: 2016-06-02
• Subjects: Biomaterials -- Titanium -- Biofunctional -- PEO -- Biomedical; Surfaces (Technology) -- Periodicals; Coatings -- Periodicals; 620.4405
• DOI: 10.1179/1743294415Y.0000000101
• Languages: English
• ISSNs: 0267-0844

Abstract

Abstract : The 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 Ti2 ZrO6 was the only phase detected on the oxidised surface of the β-Ti35Zr10Nb alloy.