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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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Vesel, Alenka
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Exploring chitosan-plant extract bilayer coatingscitations
- 2024Carboxymethylated and sulfated furcellaran from furcellaria lumbricalis and its immobilization on PLA scaffoldscitations
- 2023Carbon nanotube network formation and configuration/morphology on reinforcing and conductive performance of polymer-based nanocompositescitations
- 2023Green synthesis of a magnetite/graphitic carbon nitride 2D nanocomposite for efficient Hg2+ remediationcitations
- 2022Two-layer functional coatings of chitosan particles with embedded catechin and pomegranate extracts for potential active packagingcitations
- 2021Mechanisms of single-walled carbon nanotube network formation and its configuration in polymer-based nanocompositescitations
- 2021Distribution of the Deposition Rates in an Industrial-Size PECVD Reactor Using HMDSO Precursorcitations
- 2020Defluorination of Polytetrafluoroethylene Surface by Hydrogen Plasmacitations
- 2020Nano-mesh superstructure in single-walled carbon nanotube/polyethylene nanocomposites, and its impact on rheological, thermal and mechanical propertiescitations
- 2014Synthesis of iron-oxide nanowires using industrial-grade iron substratescitations
- 2014Oxidation of Inconel 625 superalloy upon treatment with oxygen or hydrogen plasma at high temperaturecitations
- 2014Antibacterial performance of alginic acid coating on polyethylene filmcitations
- 2013Antimicrobial silver nitrate-doped polyvinyl chloride cast films: Influence of solvent on morphology and mechanical propertiescitations
- 2012Etching of polyethylene terephthalate thin films by neutral oxygen atoms in the late flowing afterglow of oxygen plasmacitations
- 2012A Catalytic Sensor for Measurement of Radical Density in CO2 Plasmascitations
- 2011Wettability and surface composition of partly and fully regenerated cellulose thin films from trimethylsilyl cellulosecitations
- 2010An in vitro bacterial adhesion assessment of surface-modified medical-grade PVCcitations
- 2010A Physicochemical Approach to Render Antibacterial Surfaces on Plasma-Treated Medical-Grade PVC: Irgasan Coatingcitations
- 2010Characterization of Antibacterial, Mechanical, and Structural Properties of Polyvinyl Chloride/Silver Nitrate Composites Prepared by Thermoplastic Compoundingcitations
- 2007Oxygen plasma functionalization of poly(p-phenilene sulphide)citations
Places of action
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article
Oxidation of Inconel 625 superalloy upon treatment with oxygen or hydrogen plasma at high temperature
Abstract
International audience ; Initial stages of Inconel 625 superalloy (Ni60Cr30Mo10Ni4Nb1) oxidation upon short treatment with gaseous plasma at different temperatures up to about 1600 K were studied. Samples were treated for different periods up to a minute by oxygen or hydrogen plasma created with a microwave discharge in the standing-wave mode at a pressure of 40 Pa and a power 500 W. Simultaneous heating of the samples was realized by focusing concentrated solar radiation from a 5 kW solar furnace directly onto the samples. The morphological changes upon treatment were monitored using scanning electron microscopy, compositional depth profiling was performed using Auger electron spectroscopy, while structural changes were determined by X-ray diffraction. The treatment in oxygen plasma caused formation of metal oxide clusters of three dimensional crystallites initially rich in nickel oxide with the increasing chromium oxide content as the temperature was increasing. At about 1100 K iron and niobium oxides prevailed on the surface causing a drop of the material emissivity at 5 μm. Simultaneously the NiCr2O4 compound started growing at the interface between the oxide film and bulk alloy and the compound persisted up to temperatures close to the Inconel melting point. Intensive migration of minority alloying elements such as Fe and Ti was observed at 1600 K forming mixed surface oxides of sub-micrometer dimensions. The treatment in hydrogen plasma with small admixture of water vapor did not cause much modification unless the temperature was close to the melting point. At such conditions aluminum segregated on the surface and formed well-defined Al2O3 crystals.