Details

Autor(en) / Beteiligte

• Çaha, I.
• Alves, A.C.
• Affonço, L.J.
• da Silva, J.H.D.
• Rodrigues, I.R.
• Grandini, C.R.
• Rocha, L.A.
• Pinto, A.M.P.
• Lisboa-Filho, P.N.
• Toptan, F.

Titel

Degradation behaviour of Ti-12Nb alloy coated with ZnO/TiN double layer

Ist Teil von

• Surface & coatings technology, 2021-05, Vol.413, p.127104, Article 127104

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Ti and its alloys have attracted attention for biomedical applications, but their low tribocorrosion resistance, lack of bioactivity and antimicrobial properties are still major clinical concerns. In this study a ZnO coating, intended to act as an antibacterial agent, was deposited on a Ti-12Nb alloy, which was previously coated with a TiN hard coating, for improving tribocorrosion resistance. The idea behind is the proof-of -concept that ZnO is able to provide interesting tribological properties to the surface, thus inspiring new ZnO-containing surfaces that can combine antimicrobial properties and tribocorrosion resistance. Thus, the corrosion behaviour was studied by open circuit potential, electrochemical impedance spectroscopy, and potentiodynamic polarization tests in phosphate buffered solution at body temperature. The tribocorrosion behaviour was carried out at open circuit potential under 0.5 N of normal load, 1 Hz frequency, during 3600 s sliding in phosphate buffered solution at body temperature. The results indicated that duplex coating sample showed better corrosion resistance and drastically better tribocorrosion resistance compared to uncoated and single TiN coating samples. •TiN coating improved corrosion resistance of Ti-12Nb alloy•Double layer coating further improved corrosion resistance of alloy•ZnO/TiN double layer presented drastically better tribocorrosion behaviour