| Autor: |
Marcela Sepúlveda, Hanna Sopha, Veronika Cicmancova, Ludek Hromadko, Jan M. Macak |
| Jazyk: |
angličtina |
| Rok vydání: |
2025 |
| Předmět: |
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| Zdroj: |
Electrochemistry Communications, Vol 170, Iss , Pp 107855- (2025) |
| Druh dokumentu: |
article |
| ISSN: |
1388-2481 |
| DOI: |
10.1016/j.elecom.2024.107855 |
| Popis: |
In this work, the anodization of spheres of Ti and Ti6Al4V alloy (TiAlV) in glycerol-based electrolytes using bipolar electrochemistry is shown for the first time. TiO2 nanotube (TNT) layers were found over the entire surface area of the Ti and TiAlV spheres using a square wave potential of ±60 V and ±65 V with 5.56 × 10−4 Hz. The TNTs’ inner diameter on the extremities of the Ti spheres was ∼63 nm and ∼78 nm, for ±60 V and ±65 V, respectively. The inner diameter of the TNTs fabricated on the TiAlV spheres was ∼36 nm and ∼43 nm for ±60 V and ±65 V, respectively. The effect of the alloying elements of the TiAlV spheres on the TNT layers was also investigated. To estimate the effective potential on the spheres contributing to the TNT layer formation, also the conventional anodization was performed on flat Ti and TiAlV foils for comparison. It was found that the effective potential reached on the extremities of the Ti and TiAlV spheres near the feeder electrodes was only 29 % and 16 % of the applied potential, respectively. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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