| 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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Cohen, Sidney
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2023Guided Search to Self-Healing in Semiconductorscitations
- 2022Polymer Gel with Tunable Conductive Properties: A Material for Thermal Energy Harvesting
- 2022Electronic interactions and stability issues at the copper-graphene interface in air and in alkaline solution under electrochemical controlcitations
- 2019Oxygen vacancy ordering and viscoelastic mechanical properties of doped ceria ceramicscitations
- 2019A Nanoscopic View of Photoinduced Charge Transfer in Organic Nanocrystalline Heterojunctionscitations
- 2018Decoration of Inorganic Nanostructures by Metallic Nanoparticles to Induce Fluorescence, Enhance Solubility, and Tune Band Gapcitations
- 2018Microstructure and nanohardness of Ag and Ni under friction in boundary lubricationcitations
- 2018Self-Assembled Hybrid Materials Based on Organic Nanocrystals and Carbon Nanotubescitations
- 2017Self-supported Gd-doped ceria films for electromechanical actuationcitations
- 2015The gizzard plates in the Cephalaspidean gastropod Philine quadripartitacitations
- 2015Metal-organic microstructurescitations
- 2014Novel poly(3-hydroxybutyrate) nanocomposites containing WS2 inorganic nanotubes with improved thermal, mechanical and tribological propertiescitations
- 2013Osteonal lamellae elementary unitscitations
- 2013New deposition technique for metal films containing inorganic fullerene-like (IF) nanoparticlescitations
- 2013The Nature of Interfaces in Al-1050/Al-1050 and Al-1050/Mg-AZ31 Couples Joined by Magnetic Pulse Welding (MPW)citations
- 2012An international round-robin calibration protocol for nanoindentation measurementscitations
- 2012Influence of Gd content on the room temperature mechanical properties of Gd-doped ceriacitations
- 2012Zirconium vacuum arc operation in a mixture of Ar and O 2 gasescitations
- 2012Nanoindentation of osteonal bone lamellaecitations
- 2011Alleviating fatigue and failure of NiTi endodontic files by a coating containing inorganic fullerene-like WS2 nanoparticlescitations
- 2010Nanoindentation measurements and mechanical testing of as-soldered and aged Sn-0.7Cu lead-free miniature jointscitations
- 2010A novel experimental method for the local mechanical testing of human coronal dentincitations
- 2009Compressive response of dentin micro-pillarscitations
- 2007Microscopic investigation of shear in multiwalled nanotube deformationcitations
- 2007Insights into the Structure and Domain Flexibility of Full-Length Pro-Matrix Metalloproteinase-9/Gelatinase Bcitations
- 2006Sequence dependence of charge transport properties of DNAcitations
- 2004Non-crystalline pyroelectric BaTiO3 thin filmscitations
- 2001Nanoscale shear and indentation measurements in transcrystalline α-isotactic polypropylenecitations
- 2001Mechanics and dynamics of transcrystalline alpha-isotactic polypropylene at the nanoscale
Places of action
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article
Zirconium vacuum arc operation in a mixture of Ar and O 2 gases
Abstract
<p>The effect of oxygen and argon partial pressures (P <sub>O2</sub>, P <sub>Ar</sub>) in a Zr vacuum arc on plasma ion current density J <sub>p</sub>, arc voltage V <sub>arc</sub>, deposition rate v <sub>d</sub>, and selected coating properties was determined. A d.c. arc current of I <sub>arc</sub>=100A was initiated between a Zr cathode and a grounded anode. Cathode spots produced a plasma jet, which entered a 1/8 torus macroparticle (MP) filter. The plasma was guided by a d.c. magnetic field through an aperture to a glass substrate or a flat disk probe, mounted on a rotatable holder. J <sub>p</sub> was measured with the probe, negatively biased to V <sub>b</sub>=-60V. Coating thickness was measured using a profilometer, and coating properties were investigated using optical microscopy, energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), nano-indentation and optical analysis. The discharge electrical characteristics and the coating deposition rate were found to be significantly influenced by P <sub>O2</sub> and P <sub>Ar</sub>. J <sub>p</sub> and v <sub>d</sub> increased with P <sub>Ar</sub> until a maximum at P <sub>Ar</sub>=0.27Pa and decreased with P <sub>O2</sub>. V <sub>arc</sub> decreased with both P <sub>Ar</sub> and P <sub>O2</sub>. The changes in J <sub>p</sub>, V <sub>arc</sub>, and v <sub>d</sub>, with P <sub>Ar</sub> were larger at larger P <sub>O2</sub>. The J <sub>p</sub>, V <sub>arc</sub>, and v <sub>d</sub> dependencies suggest that addition of Argon increased the Zr ion emission from the cathode, possibly because Ar ion bombardment reduced Zr surface oxidation and improved plasma conductivity. Zirconium Oxide (ZrO <sub>2</sub>) coatings were transparent and had colored interference rings. Well adhered, MP-free ZrO <sub>2</sub> coatings were deposited with P <sub>O2</sub>≥1.07Pa. Coatings deposited with P <sub>O2</sub>=1.07Pa+P <sub>Ar</sub>=0 were amorphous, whereas those deposited with P <sub>O2</sub>=1.07Pa+P <sub>Ar</sub>=0.27Pa had some degree of a monoclinic phase. Furthermore, the refractive index (n) and extinction coefficient (k) slightly decreased, from 2.22 to 2.17, and from 0.03 to 0.01, respectively and coating hardness (H) and Young's Modulus (E) decreased from ~12.9 to ~11.6GPa and from ~153 to ~136GPa respectively when P <sub>Ar</sub>=0.27Pa was added to a P <sub>O2</sub>=1.07Pa environment.</p>