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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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Tarnowski, Michał
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2021Shaping the structure and properties of titanium and Ti6Al7Nb titanium alloy in low-temperature plasma nitriding processescitations
- 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
- 2021The Microstructure and Properties of Carbon Thin Films on Nanobainitic Steelcitations
- 2020Influence of nitrided and nitrocarburised layers on the functional properties of nitrogen-doped soft carbon-based coatings deposited on 316L steel under DC glow-discharge conditionscitations
- 2020Effect of nitriding conditions of Ti6Al7Nb on microstructure of TiN surface layercitations
- 2020TEM investigations of active screen plasma nitrided Ti6Al4V and Ti6Al7Nb alloyscitations
- 2020Effect of Nitrided and Nitrocarburised Austenite on Pitting and Crevice Corrosion Resistance of 316 LVM Steel Implantscitations
- 2019TEM studies of low temperature cathode-plasma nitrided Ti6Al7Nb alloycitations
- 2018Structure and hemocompatibility of nanocrystalline titanium nitride produced under glow-discharge conditionscitations
- 2018Structure and physico-mechanical properties of low temperature plasma treated electrospun nanofibrous scaffolds examined with atomic force microscopycitations
- 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
- 2017Properties of Ti-6Al-7Nb titanium alloynitrocarburized under glow discharge conditions
- 2017Odporność korozyjna warstw azotonawęglanych wytworzonych na stopie tytanu Ti6Al7Nbcitations
- 2017Corrosion resistance of NiTi shape memory alloy after hybrid surface treatment using low-temperature plasmacitations
- 2017Influence of amorphous carbon layers on tribological properties of polyetheretherketone composite in contactwith nitrided layer produced on Ti6Al4V titanium alloycitations
- 2016Cathodic Cage Plasma Nitriding of Ti6Al4V Alloycitations
- 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
- 2015The importance of surface topography for the biological properties of nitrided diffusion layers Produced on Ti6Al4V titanium alloycitations
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article
TEM investigations of active screen plasma nitrided Ti6Al4V and Ti6Al7Nb alloys
Abstract
<p>Direct current plasma nitriding (DC PN) helped to lower processing temperature as compared gas nitriding (GN) allowing to protect the surface with a layer of TiN compound and preserve the mechanical properties of the core material, which otherwise might lose its fine grain microstructure. However, samples of more complicated shapes are subjected to edge effects resulting in their overheating and uneven coverage. Introduction of active screen plasma nitriding (AS PN) should take care of both of these disadvantages, but the understanding on its effect on the compound and diffusive layers of processed parts is far from being clear. The present experiment was aimed at comparing the microstructure and the phase composition of DC PN and AS PN treated Ti6Al4V and Ti6Al7Nb alloys at temperatures of 680 °C and 740 °C. The microstructure investigations were performed with TEM/EDS methods, while phase analysis relied on electron diffraction indexing. It showed that switching from DC PN to AS PN resulted in covering it with a compact TiN layer backed with α″-Ti(N) martensite and Ti<sub>3</sub>Al-type layers, i.e. same as in the former case (DC PN) except the missing δ′-Ti<sub>2</sub>N layer. Additionally, it changes nitriding mechanism from absorption-diffusion of nitrogen ions to adsorption-diffusion of these species, what is a reason of slowing down of the rate of nucleation and growth of both the compound and diffusive layers. The growth of β-Ti(N) layer, which changes on cooling to α″-Ti(N) is controlled by in-diffusion of nitrogen to its front.</p>