| People | Locations | Statistics |
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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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Bell, Thomas
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2020Binary Intermetallics in the 70 atom % R Region of Two R-Pd Systems (R = Tb and Er)citations
- 2018From the Nonexistent Polar Intermetallic Pt3Pr4 via Pt2- xPr3 to Pt/Sn/Pr Ternariescitations
- 2018An Obscured or Nonexistent Binary Intermetallic, CO7Pr17, Its Existent Neighbor Co2Pr5, and Two New Ternaries in the System Co/Sn/Pr, CoSn3Pr1−x, and Co2−xSn7Pr3citations
- 2011Evaluation of the biocompatibility of S-phase layers on medical grade austenitic stainless steels.citations
- 2007Low-temperature plasma surface alloying of medical grade austenitic stainless steel with carbon and nitrogencitations
- 2006The role of sublayer in determining the load bearing capacity of nitrocarburised pure ironcitations
- 2004Surface chemical and nanomechanical aspects of air PIII-treated Ti and Ti-alloycitations
- 2002Surface engineering of Timet 550 with oxygen to form a rutile-based, wear-resistant coatingcitations
- 2001Methods of case hardening
- 2001Duplex surface treatment of high strength Timetal 550 alloy towards high load-bearing capacitycitations
Places of action
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article
Surface chemical and nanomechanical aspects of air PIII-treated Ti and Ti-alloy
Abstract
Plasma immersion ion implantation (PIII) of Ti and Ti6Al4V alloy in dry air plasma has been performed with 25 W negative pulses up to 1.9 X 10(18) cm(-2) doses. For comparison, prolonged (50- 100 h), high-temperature (600-650 degreesC) heat treatment of a similar Ti-alloy in air (TO treatment) was also performed. The changes in chemical composition, structure and hardness of the modified surfaces were studied by XPS, X-ray diffraction (XRD) analysis and nanoindentation measurements. According to XPS, surface oxidation and strong surface enrichment of At occurred on the Ti-alloys after both the "non-equilibrium" PIII treatment and the "equilibrium" TO treatment. After the air PIII treatment Ti and Al were present in fully oxidized (TiO2 and Al2O3) States, and neither nitrogen nor vanadium could be detected in the topmost layer. XRD showed the formation of rutile and substoichiometric TiO2-x phases on the PIII-treated Ti and TO-treated Ti-alloy, but no crystalline oxide phase was found on the PIII-treated Ti-alloy. The surface hardness and the scratch resistance of the samples increased significantly after PIII treatment. The surface hardening and the improved scratch resistance of the oxidized Ti-alloy samples can be explained mainly by the surface segregation of Al and the formation of a layer containing oxidized Ti and Al.