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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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Shukla, Pratik
University of Chester
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2023Effect of laser shock peening on austempered ductile ironcitations
- 2020On restructuring the microstructure of Ti-6Al-7Nb alloy before surface engineeringcitations
- 2019Residual stress, phase, microstructure and mechanical property studies of ultrafine bainitic steel through laser shock peeningcitations
- 2019Effect of laser shock peening on commercially pure titanium-1 weldment fabricated by gas tungsten arc welding techniquecitations
- 2019Altering the wetting properties of orthopaedic titanium alloy (Ti–6Al–7Nb) using laser shock peeningcitations
- 2019Shock-wave induced compressive stress on alumina ceramics by laser peeningcitations
- 2018Enhanced surface and mechanical properties of bioinspired nanolaminate graphene-aluminium alloy nanocomposites through laser shock processing for biomedical implant and engineering applicationscitations
- 2018Laser shock peening without coating induced residual stress distribution, wettability characteristics and enhanced pitting corrosion resistance of austenitic stainless steelcitations
- 2018Laser cleaning of grey cast iron automotive brake disc
- 2017Effect of Laser Shock Peening (LSP) on the Microstructure, Residual Stress State and Hardness of a Nickel based Superalloy
- 2017Improvement in mechanical properties of titanium alloy (Ti-6Al-7Nb) subject to multiple laser shock peeningcitations
- 2017Corrigendum to “Surface property modifications of silicon carbide ceramic following laser shock peening” [J. Eur. Ceram. Soc. 37 (9) (2017) 3027–3038]
- 2017Surface property modifications of silicon carbide ceramic following laser shock peeningcitations
- 2016Development in laser peening of advanced ceramiccitations
- 2016Modulating the wettability characteristics and bioactivity of polymeric materials using laser surface treatmentcitations
- 2015Laser surface treatment of polyamide and NiTi alloy and the effects on mesenchymal stem cell response
- 2015Development in laser peening of advanced ceramicscitations
- 2015Modulating the wettability characteristics and bioactivity of polymeric materials using laser surface treatment
- 2014Investigation of temperature distribution during CO2 laser and fibre laser processing of a Si3N4 engineering ceramic by means of a computational and experimental approach
- 2014Laser Shock Peening and Mechanical Shot Peening Processes Applicable for the Surface Treatment of Technical Grade Ceramicscitations
- 2013Role of laser beam radiance in different ceramic processingcitations
- 2013Investigation of temperature distribution during CO2 and Fibre laser processing of Si3N4 engineering ceramic by means of a computational and experimental approach
- 2013Evaluation of surface cracks following processing of a ZrO2 advance ceramic with CO2 and fibre laser radiation
- 2013Evaluation of Surface Cracks following Processing of a ZrO2 Advance Ceramic with CO2 and Fibre laser Radiation
- 2011Influence of laser beam brightness during surface treatment of a ZrO 2 engineering ceramic
- 2010Surface characterization and compositional evaluation of a fibre laser processed silicon nitride (Si3N4) engineering ceramic
- 2010Analysis of temperature distribution during fibre laser surface treatment of a zirconia engineering ceramiccitations
- 2010Fracture toughness modifications by means of CO2 laser beam surface processing of a silicon nitride engineering ceramiccitations
- 2010Fracture toughness of a zirconia engineering ceramic and the effects thereon of surface processing with fibre laser radiationcitations
- 2010On the Establishment of an Appropriate Method for Evaluating the Residual Stresses after Laser Surface Treatment of ZrO2 and Si3N4 Engineering Ceramics’
- 2009Characterization and compositional study of fibre laser processed engineering ceramics
- 2009Laser surface treatment of engineering ceramics and the effects thereof on fracture toughness
Places of action
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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>