OSSOWSKA, Agnieszka; OLIVE, Jean-Marc; ZIELIŃSKI, Andrzej; WOJTOWICZ, Andrzej

doi:10.1016/j.apsusc.2021.150340

Institut de Mécanique et d'Ingénierie [I2M]

ZIELIŃSKI, Andrzej

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Applied Surface Science. 2021-10-01, vol. 563, p. 150340

Résumé en anglais

The research focuses on the development and characterization of innovative thin hybrid oxide coatings obtained in subsequent processes of thermal (TO) and electrochemical (EO) oxidation. Four different surface modifications were investigated and the microstructure was determined, the mechanical, chemical and biological properties of the Ti-13Nb-13Zr alloy were assessed using scanning electron microscopy, X-ray dispersion analysis, glow discharge emission spectroscopy, Raman spectroscopy, nanoindentation and corrosion resistance measurements. The composite layers were evaluated for antimicrobial activity, cytotoxicity bioassays and wettability tests were performed. The conducted studies of two-stage oxidation (TO + EO) have shown that it is possible to obtain layers with a different structure - crystalline and nanotubular. The formation of a nanotube layer on the surface of the crystalline layer is dependent on the thickness of the crystalline layer. The produced double titanium oxide coatings show high surface roughness, high corrosion resistance, are hydrophilic, slightly antibacterial, and not cytotoxic, which has a huge impact on the process of connecting the tissue with the implant.< Réduire

Mots clés en anglais

Titanium alloys

Thermal oxidation

Electrochemical oxidation

Coatings

Microstructure

Nanoindentation

Cytotoxicity

Antibacterial efficiency

URI

https://oskar-bordeaux.fr/handle/20.500.12278/124199

DOI

http://dx.doi.org/10.1016/j.apsusc.2021.150340

Unités de recherche

Institut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295

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Effect of double thermal and electrochemical oxidation on titanium alloys for medical applications

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