TY - JOUR A1 - Valentim Gelamo, Rogério A1 - Bueno Leite, Natália A1 - de Sousa Amadeu, Nader A1 - Reis Pedreira Muniz Tavares, Michel A1 - Oberschmidt, Dirk A1 - Klemm, Sophie A1 - Fleck, Claudia A1 - Cakir, Cafer-Tufan A1 - Radtke, Martin A1 - Aparecido Moreto, Jéferson T1 - Exploring the Nb2O5 coating deposited on the Ti-6Al-4V alloy by a novel GE-XANES technique and nanoindentation load-depth N2 - This research group has been demonstrating the significant advantages of using Nb2O5 coatings for functionalizing titanium, aluminium, and stainless steels. Regarding the biomedical sector and considering Ti-6Al-4V alloy, the reactive sputtering technique improved the cell viability, the osteogenic performance of cells involved in the osseointegration process as well as the ability to delay bacterial proliferation. The characteristics of the Nb2O5 coatings were assessed before by using standard methods, which provide information only a few tens of nanometers depth. Given that the Nb2O5 coating fabricated in this work exhibits a thickness of approximately 300 nm, the GE-XANES technique emerges as the most suitable method for this analysis. Additional information was provided with the aid of nanoindentation load-depth (P-h) curves. GE-XANES results indicated the formation of a homogeneous layer of Nb2O5 coating on the Ti-6Al-4V surfaces. The deposition process improved the surface hardness of the Ti-6Al-4V alloy (4.38 GPa versus 5.62 GPa) considering the 2 mN load. KW - BAMline KW - GE-XANES KW - Synchrotron PY - 2024 DO - https://doi.org/10.1016/j.matlet.2023.135584 SN - 0167-577X VL - 355 SP - 1 EP - 4 PB - Elsevier B.V. AN - OPUS4-60835 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -