Influence of Two-Stage Anodization on Properties of the Oxide Coatings on the Ti–13Nb–13Zr Alloy

Agnieszka Ossowska (1) , Andrzej Zieliński (1) , Jean-Marc Olive (2) , Andrzej Wojtowicz (3) , Piotr Szweda (1)

1 GUT - Gdańsk University of Technology
2 I2M - Institut de Mécanique et d'Ingénierie
3 Medical University of Warsaw - Poland

The increasing demand for titanium and its alloys used for implants results in the need for innovative surface treatments that may both increase corrosion resistance and biocompatibility and demonstrate antibacterial protection at no cytotoxicity. The purpose of this research was to characterize the effect of two-stage anodization-performed for 30 min in phosphoric acid-in the presence of hydrofluoric acid in the second stage. Scanning electron microscopy, atomic force microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, Raman spectroscopy, glow discharge optical emission spectroscopy, nanoindentation and nano-scratch tests, potentiodynamic corrosion studies, and water contact angle measurements were performed to characterize microstructure, mechanical, chemical and physical properties. The biologic examinations were carried out to determine the cytotoxicity and antibacterial effects of oxide coatings. The research results demonstrate that two-stage oxidation affects several features and, in particular, improves mechanical and chemical behavior. The processes influencing the formation and properties of the oxide coating are discussed.

Mots clés: titanium alloys; electrochemical oxidation; nanotubular oxide layers; microstructure; nanomechanical properties; corrosion resistance; wettability; antibacterial protection; cytotoxicity

Domaines: Matériaux

Agnieszka Ossowska, Andrzej Zieliński, Jean-Marc Olive, Andrzej Wojtowicz, Piotr Szweda. Influence of Two-Stage Anodization on Properties of the Oxide Coatings on the Ti–13Nb–13Zr Alloy. Coatings, 2020, 10 (8), pp.707. ⟨10.3390/coatings10080707⟩. ⟨hal-02910299⟩