Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/12918
Title: Atomic–scale investigations of passive film formation on Ti-Nb alloys
Authors: Çaha, İhsan
Alves, Alexandra C.
Chirico, Caterina
Maria Pinto, Ana
Tsipas, Sophia
Gordo, Elena
Bondarchuk, Oleksandr
Leonard Deepak, Francis
Toptan, Fatih
Keywords: Corrosion
EIS
Passive film
TEM
XPS
Binary alloys
Electrochemical corrosion
Electrolytes
Niobium alloys
Titanium dioxide
Issue Date: 2023
Publisher: Elsevier
Abstract: This study extensively investigates the passive film formation mechanisms on Ti-xNb alloys by using several electrochemical techniques, including electrochemical impedance spectroscopy (EIS) before and after potentiostatic polarization at the passive zone, and Mott-Schottky (MS) measurements in 9 g/l NaCl electrolyte at 37 °C, together with X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) analysis. Overall, the Ti40Nb presented lower corrosion resistance due to a thinner passive film as compared to commercial pure Ti (grade 2) and Ti12Nb. The passive film formed on Ti12Nb and Ti40Nb alloys at a steady-state condition (+0.5 VAg/AgCl for 60 min) is composed of amorphous phases of TiO, Ti2O3, TiO2, Nb2O5 and crystalline phases of TiO2 (anatase) and Nb2O5. © 2022 Elsevier B.V.
URI: https://doi.org/10.1016/j.apsusc.2022.156282
https://hdl.handle.net/11147/12918
ISSN: 0169-4332
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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