Skip to Main content Skip to Navigation
Journal articles

Dual Electrochemical Treatments to Improve Properties of Ti6Al4V Alloy

Abstract : 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.
Document type :
Journal articles
Complete list of metadatas

Cited literature [46 references]  Display  Hide  Download

https://hal-amu.archives-ouvertes.fr/hal-02750528
Contributor : Marielle Eyraud <>
Submitted on : Wednesday, June 3, 2020 - 5:12:19 PM
Last modification on : Friday, June 5, 2020 - 4:24:07 AM

File

article-materials-13-02479.pdf
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

Citation

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

Share

Metrics

Record views

60

Files downloads

61