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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Witkowska, Justyna
Warsaw University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2021Formation of Nitrogen Doped Titanium Dioxide Surface Layer on NiTi Shape Memory Alloycitations
- 2021Plasma modification of carbon coating produced by RF CVD on oxidized NiTi shape memory alloy under glow-discharge conditionscitations
- 2019Microstructural and corrosion resistance characterisation of NiTi shape memory alloy modified at low-temperature plasma with carbon coatings produced via RFCVD and IBAD methodscitations
- 2018Structure and hemocompatibility of nanocrystalline titanium nitride produced under glow-discharge conditionscitations
- 2018Structure and corrosion resistance of titanium oxide layers produced on NiTi alloy in low-temperature plasmacitations
- 2018Influence of low temperature plasma oxynitriding on the mechanical behavior of NiTi shape memory alloyscitations
- 2018Modification of titanium and its alloys implants by low temperature surface plasma treatments for cardiovascular applicationscitations
- 2018Structure and properties of composite surface layers produced on NiTi shape memory alloy by a hybrid methodcitations
- 2018Multi-scale characterization and biological evaluation of composite surface layers produced under glow discharge conditions on NiTi shape memory alloy for potential cardiological applicationcitations
- 2017Corrosion resistance of NiTi shape memory alloy after hybrid surface treatment using low-temperature plasmacitations
- 2017Hybrid a-CNH+TiO2+TiN-type surface layers produced on NiTi shape memory alloy for cardiovascular applicationscitations
- 2017NiTi shape-memory alloy oxidized in low-temperature plasma with carbon coating: Characteristic and a potential for cardiovascular applicationscitations
- 2016Wpływ topografii powierzchni na odporność korozyjną stopu z pamięcią kształtu NiTi po procesie azotowania jarzeniowego w niskotemperaturowej plazmie / Influence of surface topography on the corrosion resistance of NiTi shape memory alloy nitrided at low-temperature plasma process
- 2016Corrosion Resistance of NiTi Shape Memory Alloy after Nitriding and Oxynitriding Processes under Glow Discharge Conditions for Medical Applicationscitations
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article
Formation of Nitrogen Doped Titanium Dioxide Surface Layer on NiTi Shape Memory Alloy
Abstract
<jats:p>NiTi shape memory alloys are increasingly being used as bone and cardiac implants. The oxide layer of nanometric thickness spontaneously formed on their surface does not sufficiently protect from nickel transition into surrounding tissues, and its presence, even in a small amount, can be harmful to the human organism. In order to limit this disadvantageous phenomenon, there are several surface engineering techniques used, including oxidation methods. Due to the usually complex shapes of implants, one of the most prospective methods is low-temperature plasma oxidation. This article presents the role of cathode sputtering in the formation of a titanium dioxide surface layer, specifically rutile. The surface of the NiTi shape memory alloy was modified using low-temperature glow discharge plasma oxidation processes, which were carried out in two variants: oxidation using an argon + oxygen (80% vol.) reactive atmosphere and the less chemically active argon + air (80% vol.), but with a preliminary cathode sputtering process in the Ar + N2 (1:1) plasma. This paper presents the structure (STEM), chemical composition (EDS, SIMS), surface topography (optical profilometer, Atomic Force Microscopy—AFM) and antibacterial properties of nanocrystalline TiO2 diffusive surface layers. It is shown that prior cathodic sputtering in argon-nitrogen plasma almost doubled the thickness of the produced nitrogen-doped titanium dioxide layers despite using air instead of oxygen. The (TiOxNy)2 diffusive surface layer showed a high level of resistance to E. coli colonization in comparison with NiTi, which indicates the possibility of using this surface layer in the modification of NiTi implants’ properties.</jats:p>