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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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Grumsen, Flemming Bjerg
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (33/33 displayed)
- 20243D microstructural and strain evolution during the early stages of tensile deformationcitations
- 2023Thermal stability of hierarchical microstructural features in additively manufactured stainless steelcitations
- 2023Aging 17-4 PH martensitic stainless steel prior to hardeningcitations
- 2023The effect of trace level copper content on intergranular corrosion of extruded AA6082-T6 alloyscitations
- 2021Thermochemical surface hardening and self-repair of bulk metallic glass
- 2021Residual strain-stress in manganese steel railway-crossing determined by synchrotron and laboratory X-raycitations
- 2021Thermal evolution of ferrite in electrodeposited iron‑carbon coatings in relation to phase transformations during post-deposition annealingcitations
- 2020Anisotropy effects on gaseous nitriding of austenitic stainless steel single crystalscitations
- 2020Strain, stress and stress relaxation in oxidized ZrCuAl-based bulk metallic glasscitations
- 2020Strain, stress and stress relaxation in oxidized ZrCuAl-based bulk metallic glasscitations
- 2019Nitridation of grate in a biomass-fired boiler
- 2019Residual stress determination in oxidized bulk metallic glass using X-ray diffraction and FIB/DIC methods
- 2019Analyzing Boron in 9–12% Chromium Steels Using Atom Probe Tomographycitations
- 2019Surface hardening by gaseous oxidizing of (Zr55Cu30Al10Ni5)98Er2 bulk-metallic glasscitations
- 2019Effect of service exposure on KCl corrosion attack of AISI 347H FG steelcitations
- 2019Effect of service exposure on KCl corrosion attack of AISI 347H FG steelcitations
- 2018Characterization of pack cemented Ni 2 Al 3 coating exposed to KCl(s) induced corrosion at 600 °Ccitations
- 2018Characterization of oxide layers developed on ZrCuAl-based bulk metallic glasses during gaseous thermochemical treatment
- 2018Characterization of pack cemented Ni2Al3 coating exposed to KCl(s) induced corrosion at 600 °Ccitations
- 2018Fine (Cr,Fe)2B borides on grain boundaries in a 10Cr–0.01B martensitic steelcitations
- 2018Formation and stabilization of reverted austenite in supermartensitic stainless steelcitations
- 2017Formation and stabilization of reversed austenite in supermartensitic stainless steel
- 2017Discontinuous precipitation in a nickel-free high nitrogen austenitic stainless steel on solution nitridingcitations
- 2015Effect of iodine on the corrosion of Au-Al wire bondscitations
- 2014A TEM Study on the Ti-Alloyed Grey Iron
- 2014New amorphous interface for precipitate nitrides in steelcitations
- 2013Investigation on Long-term Creep Rupture Properties and Microstructure Stability of Fe-Ni based Alloy Ni-23Cr-7W at 700°Ccitations
- 2012Martensitic transformation and stress partitioning in a high-carbon steelcitations
- 2011Electrochemical migration of tin in electronics and microstructure of the dendritescitations
- 2010Microstructural investigation of the oxide formed on TP 347H FG during long-term steam oxidationcitations
- 2010Microstructure Evolution During Steam Oxidation of a Nb Stabilized Austenitic Stainless Steelcitations
- 2008Ge nanoclusters in PECVD-deposited glass caused only by heat treatmentcitations
- 2007Ge nanoclusters in PECVD-deposited glass after heat treating and electron irradiationcitations
Places of action
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article
Surface hardening by gaseous oxidizing of (Zr55Cu30Al10Ni5)98Er2 bulk-metallic glass
Abstract
The present investigation addresses surface hardening and the oxidation behavior of (Zr<sub>55</sub>Cu<sub>30</sub>Al<sub>10</sub>Ni<sub>5</sub>)<sub>98</sub>Er<sub>2</sub> bulk-metallic glass (BMG) during gaseous oxidizing below the glass transition temperature (<Tg). The BMG was thermochemically surface engineered in controlled gaseous atmospheres imposing either an extremely low or an extremely high oxygen partial pressure. The hardened oxygen-containing case developing during oxidizing the BMG was characterized with X-ray diffraction, (electron) microscopy, energy dispersive spectroscopy and micro-hardness indentation. It was observed that oxidizing at a high resulted in the formation of an internal and an external oxidized zone; the latter can be minimized by applying a low. The inner oxide zone (IOZ) consisted mainly of a nano-crystalline dispersion of tetragonal ZrO<sub>2</sub>, while a porous CuOx network developed in the outer oxide zone (OOZ). The formation of copper oxide islands at the surface is interpreted as the result of outward diffusion of metallic Cu driven by a compressive stress gradient in the IOZ caused by volume expansion associated with ZrO<sub>2</sub> (and Al<sub>2</sub>O<sub>3</sub>) formation. The results demonstrate that a hardened case (the IOZ) with a maximum hardness of ∼12 GPa can be achieved. The depth distribution of oxygen is explained in terms of a concurrent crystallization of the BMG below T<sub>g</sub>.<br/>