Nanotubular oxide layers formation on Ti–24Nb–4Zr–8Sn and Ti–13Zr–13Nb alloys in the ethylene glycol-based electrolyte: The role of alloying elements and phase composition

Anna Majchrowicz , A. Roguska , M. Pisarek , Małgorzata Lewandowska

Abstract

In this work, the self-organized mixed-oxide nanotubes (NTs) have been fabricated on a commercially pure α- phase titanium, single β-phase Ti–24Nb–4Zr-8Sn alloy and α+β-phase Ti–13Zr–13Nb alloy. Anodization process was performed in ethylene glycol-based electrolyte with fluoride ions at constant voltage of 20 V for 2 h. Morphology of obtained NTs was characterized by scanning and transmission electron microscopy and the chemical analysis was performed by Auger electron and X-ray photoelectron spectroscopy methods. Despite of applying the same process parameters in all cases, NTs obtained on three different substrates showed a different morphology: ribbed walls for titanium and smooth walls for Ti–24Nb–4Zr–8Sn and Ti–13Zr–13Nb alloys. The presence of alloying additives as well as phase composition of both Ti alloys strongly affected the uniformity and height of the obtained nanotubular layers. NTs layers formed on the surface of both Ti alloys were significantly higher but also more inhomogeneous in comparison to pure Ti. Moreover, NTs of different heights were observed on Ti–13Zr–13Nb, the higher growing on the β phase and lower on the α phase. Anodization of titanium alloys led to obtaining layers with mixture of stoichiometric oxides – TiO2, Nb2O5, ZrO2, SnO2.
Author Anna Majchrowicz (FMSE / DMD)
Anna Majchrowicz,,
- Division of Materials Design
, A. Roguska (FC)
A. Roguska,,
- Faculty of Chemistry
, M. Pisarek
M. Pisarek,,
-
, Małgorzata Lewandowska (FMSE / DMD)
Małgorzata Lewandowska,,
- Division of Materials Design
Journal seriesThin Solid Films, ISSN 0040-6090, (N/A 70 pkt)
Issue year2019
Vol692
Pages1-9
Article number137635
Keywords in EnglishAnodization, Titanium alloys, Oxide nanotubes
ASJC Classification2504 Electronic, Optical and Magnetic Materials; 2505 Materials Chemistry; 2506 Metals and Alloys; 2508 Surfaces, Coatings and Films; 3110 Surfaces and Interfaces
DOIDOI:10.1016/j.tsf.2019.137635
URL https://doi.org/10.1016/j.tsf.2019.137635
Languageen angielski
File
2019 TSF Majchrowicz.pdf 4.44 MB
Score (nominal)70
Score sourcejournalList
ScoreMinisterial score = 70.0, 20-12-2019, ArticleFromJournal
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 0.864; WoS Impact Factor: 2018 = 1.888 (2) - 2018=1.748 (5)
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