Dual Electrochemical Treatments to Improve Properties of Ti6Al4V Alloy - Aix-Marseille Université Accéder directement au contenu
Article Dans Une Revue Materials Année : 2020

Dual Electrochemical Treatments to Improve Properties of Ti6Al4V Alloy

Résumé

Surface treatments are considered as a good alternative to increase biocompatibility and the lifetime of Ti-based alloys used for implants in the human body. The present research reports the comparison of bare and modified Ti6Al4V substrates on hydrophilicity and corrosion resistance properties in body fluid environment at 37 • C. Several surface treatments were conducted separately to obtain either a porous oxide layer using nanostructuration (N) in ethylene glycol containing fluoride solution, or bulk oxide thin films through heat treatment at 450 • C for 3 h (HT), or electrochemical oxidation at 1 V for 3 h (EO), as well as combined treatments (N-HT and N-EO). In-situ X-ray diffraction and ex-situ transmission electron microscopy have shown that heat treatment gave first rise to the formation of a 30 nm thick amorphous layer which crystallized in rutile around 620 • C. Electrochemical oxidations gave rise to a 10 nm thick amorphous film on the top of the surface (EO) or below the amorphous nanotube layer (N-EO). Dual treated samples presented similar results with a more stable behavior for N-EO. Finally, for both corrosion and hydrophilicity points of view, the new combined treatment to get a total amorphous N-EO sample seems to be the best and even better than the partially crystallized N-HT sample.
Fichier principal
Vignette du fichier
article-materials-13-02479.pdf (3.78 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02750528 , version 1 (03-06-2020)

Licence

Paternité

Identifiants

Citer

Stefano Rossi, Luciana Volgare, Carine Perrin-Pellegrino, Carine Chassigneux, Erick Dousset, et al.. Dual Electrochemical Treatments to Improve Properties of Ti6Al4V Alloy. Materials, 2020, 13 (11), pp.2479. ⟨10.3390/ma13112479⟩. ⟨hal-02750528⟩
119 Consultations
93 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More