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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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Czarnowska, Elżbieta
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (4/4 displayed)
- 2018Structure and hemocompatibility of nanocrystalline titanium nitride produced under glow-discharge conditionscitations
- 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
- 2017Hybrid a-CNH+TiO2+TiN-type surface layers produced on NiTi shape memory alloy for cardiovascular applicationscitations
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article
Modification of titanium and its alloys implants by low temperature surface plasma treatments for cardiovascular applications
Abstract
Impairment of the cardiovascular system is a major cause of mortality in humans. Cardiac implants are made mostly of titanium and its alloys and various methods have been used to improve their surface properties. Titanium nitride - TiN and titanium oxide - TiO2 surface layers are promising materials to improvebiocompatibility in this respect. Modifying their surface properties in the nanoscale may impact their protein adsorption and cellular response to the implant.Nitriding and oxynitriding processes in low-temperature plasma, also involving the use of an active screen, seem to be prospective methods in the production of titanium nitride and oxide forming an diffusive outer zone of titanium nitride - TiN (nanocrystalline)+Ti2N+αTi(N) or oxynitrided - TiO2(nanocrystalline)+TiN+Ti2N+αTi(N) surface layers on titanium alloy. Also a hybrid method that combines oxidizing and the RFCVD process for producing a-C:N:H (amorphous carbon modified with nitrogen and hydrogen ) +TiO2 ( nanocrystalline titanium oxide-rutile)– type composite surface layers on NiTi shape memory alloys is noteworthy in the context of medical applications.The paper presents the characteristics of these diffusion multi-phase layers in terms of their microstructure, topography, hardness, residual stress, corrosion and wear resistance, wettability as well as biological properties such as: adsorption of proteins - fibrinogen and albumin, and platelet adhesion during interaction with blood components (human plasma and platelet-rich plasma). The results suggest that these layers,produced using the new hybrid processes, exhibit a high potential for improving cardiac implant properties. The article is based on research carried out by the authors and the interpretation of the obtained results is made on the basis of literature data regarding the surface layers of titanium oxides and titanium nitride produced by various methods.