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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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Mondinos, N.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2021High temperature (up to 1200 °C) thermal-mechanical stability of Si and Ni doped CrN framework coatingscitations
- 2019Nanorose-like ZnCo2O4 coatings synthesized via sol–gel route: Morphology, grain growth and DFT simulationscitations
- 2017Structural and optical characteristics of pre- and post-annealed sol-gel derived CoCu-oxide coatingscitations
- 2017Investigation of the post-annealing electromagnetic response of Cu–Co oxide coatings via optical measurement and computational modellingcitations
- 2016Structural thermal stability of graphene oxide-doped copper-cobalt oxide coatings as a solar selective surfacecitations
- 2016Effects of annealing temperatures on the morphological, mechanical, surface chemical bonding, and solar selectivity properties of sputtered TiAlSiN thin filmscitations
- 2016Structural, optical, and mechanical properties of cobalt copper oxide coatings synthesized from low concentrations of sol-gel processcitations
- 2016Chemical bonding states and solar selective characteristics of unbalanced magnetron sputtered TixM1−x−yNyfilmscitations
- 2016Understanding the structural, morphological and optical features of Mo, CrN and CrMoN sputtered films
- 20153d transition metal oxide based sol-gel derived coatings for photothermal applications
- 2014Understanding local bonding structures of Ni-doped chromium nitride coatings through synchrotron radiation NEXAFS spectroscopycitations
- 2014Phase transition in CrxAl(1-x)N coating at high temperatures
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document
Phase transition in CrxAl(1-x)N coating at high temperatures
Abstract
Transition metal nitrides (say TiN and CrN) have widespread industrial applications as they provide wear protection, high temperature and corrosion resistance, good adhesion and very high hardness. Over the past few years, CrNs have been used in cutting, milling and screw-threading tools due to their better thermal stability, corrosion and wear resistances. In this work, Al doped CrN superhard coatings are studied for their thermal stability. Surface and cross sectional morphology of the coating was investigated using Scanning Electron Microscopy (SEM) equipped with Energy Dispersive Spectroscopy (EDS) detector. Synchrotron radiation powder diffraction beamline was used to investigate the microstructure and phase transition of the coating layers within temperature range of 25 ˚C to 700 ˚C in steps of 100 ˚C. SEM study revealed interesting elemental distribution over the coating layers. Results indicated that CrN and Cr2N are the main structural phases at 25 ˚C and 700 ˚C, respectively. Dominant structural changes during annealing results in the gradual transformation of cubic CrN phase to the hexagonal Cr2N phase. In addition, recrystallization of CrN and Cr2N phases with preferential growth directions were observed. As the temperature increased the width of the peaks were reduced while their increased intensity indicate the grain growth in the coating layers.