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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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Paul, A.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2021A benzimidazole-based new fluorogenic differential/sequential chemosensor for Cu2+, Zn2+, CN-, P2O74-, DNA, its live-cell imaging and pyrosequencing applicationscitations
- 2016Morphology of {{Fe}} Nanolayers with {{Pt}} Overlayers on Low-Temperature Annealingcitations
- 2013Interfacial smoothening of polymer multilayers with molecules: a new approach in growing supramolecular layer structurescitations
- 2013Molecularly imprinted conductive polymers for controlled trafficking of neurotransmitters at solid–liquid interfacescitations
- 2013UHTC-carbon fibre compositescitations
- 2011Influence of laser beam brightness during surface treatment of a ZrO2 engineering ceramic
- 2011Influence of laser beam brightness during surface treatment of a ZrO 2 engineering ceramic
- 2010Study on the growth of Nb3Sn superconductor in Cu(Sn)/Nb diffusion couple
- 2009Microstructural characterisation of titanium coatings deposited using cold gas spraying on Al2O3 substratescitations
- 2009Determination of diffusion parameters and activation energy of diffusion in V3Si phase with A15 crystal structurecitations
- 2008On the spatial stability and bifurnication of the Kirkendall plane during solid-state interdiffusioncitations
- 2006Physico-chemical analysis of compound growth in a diffusion couple with two-phase end-memberscitations
- 2004Intermetallic growth and Kirkendall effect manifestations in Cu/Sn and Au/Sn diffusion couples
- 2004The Kirkendall effect in muliphase diffusioncitations
- 2004Bifurcation of the Kirkendall plane during interdiffusion in the intermetallic compound beta-NiAlcitations
- 2004Understanding the mechanism of action of poly(amidoamine)s as endosomolytic polymers: correlation of physicochemical and biological propertiescitations
- 2003Intrinsic diffusion in Ni3Al systemcitations
- 2003Formation of AB2-intermetallics by diffusion in the Au-Sb-Bi systemcitations
- 2002Young's modulus of (Ti,Si )N films by surface acoustic waves and indentation techniquescitations
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article
Influence of laser beam brightness during surface treatment of a ZrO 2 engineering ceramic
Abstract
<p>A comparative study between fibre and Nd:YAG (neodymium, yttrium, aluminium, garnet) laser surface treatment on a cold isostatic pressed (CIP) ZrO<sub>2</sub> engineering ceramic was conducted to investigate the individual differences of laser brightness (radiance) produced by the two laser sources. The effects of brightness exhibited by the two lasers were investigated in respect to the change in the hardness, dimensional size of the laser irradiated zones and the microstructure of the ZrO<sub>2</sub> engineering ceramic. The results showed that the hardness of the ZrO<sub>2</sub> engineering ceramic was reduced by 36% for the Nd:YAG laser in comparison to the as-received surface. However, only 4% reduction in the surface hardness was found from employing the fibre laser surface treatment which was not significant as much as the results of the Nd:YAG laser irradiation. The change in hardness occurred due to softening of the laser irradiated surface of the ZrO<sub>2</sub> with a changed composition which was softer than the laser unaffected surface. The dimensional size of the fibre laser irradiated track was also found to produce broader surface profiles in comparison to that of the Nd:YAG laser. The fibre laser irradiated surface track was 32% larger in width and 51.5% longer in depth of penetration in comparison to that of the Nd:YAG laser. Change in microstructure of the ZrO<sub>2</sub> engineering ceramic irradiated by both lasers was found as opposed to the ground and polished untreated surface. The fibre laser affected the grain morphology to a greater extent in comparison to that of the Nd:YAG laser irradiation. The physical and micro-structural effects from applying the two laser types to the ZrO<sub>2</sub> engineering ceramic differed as deep penetration and broader laser irradiated track as well as larger grains were produced by the fibre laser, despite using identical laser processing parameters such as spot size, power density, traverse speed, gas flow rate, wavelength and the Gaussian beam profile. This occurred due to the high brightness exhibited by the fibre laser irradiation which generated larger power per unit area which in turn induced into the ZrO<sub>2</sub> engineering ceramic and resulted to producing high processing temperature, larger fibre laser-ceramic-interaction zone and melt-pool at the laser-ZrO<sub>2</sub> interface in comparison to that of the Nd:YAG laser which intrinsically resulted to a change in physical attributes of the ceramic.</p>