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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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Shahzad, Khuram
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Exchange bias behaviour in cobalt ferrite-cobalt oxide CoFe<sub>2</sub>O<sub>4</sub>/CoO nanocomposites for data storage applicationscitations
- 2016Shaping ceramics through indirect selective laser sinteringcitations
- 2014Indirect selective laser sintering of alumina
- 2014Comparison of different powder metallurgy processes to produce alumina parts through indirect Selective Laser Sintering
- 2014Additive manufacturing of zirconia parts by indirect selective laser sinteringcitations
- 2013Additive manufacturing of alumina parts by indirect selective laser sintering and post processingcitations
- 2013Polystyrene-coated alumina powder via dispersion polymerization for indirect selective laser sintering applicationscitations
- 2013Densification and Geometrical Assessments of Alumina Parts Produced Through Indirect Selective Laser Sintering of Alumina-Polystyrene Composite Powdercitations
- 2012Preparation and indirect selective laser sintering of alumina/PA microspherescitations
- 2012Isostatic pressing assisted indirect selective laser sintering of alumina componentscitations
- 2012Density improvement of alumina parts produced through selective laser sintering of alumina-polyamide composite powdercitations
- 2012Fabrication of high density alumina parts by indirect selective laser sintering
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article
Preparation and indirect selective laser sintering of alumina/PA microspheres
Abstract
Indirect selective laser sintering (SLS) is a promising additive manufacturing technique to produce ceramic parts with complex shapes in a two-step process. In the first step, the polymer phase in a deposited polymer/alumina composite microsphere layer is locally molten by a scanning laser beam, resulting in local ceramic particle bonding. In the second step, the binder is removed from the green parts by slowly heating and subsequently furnace sintered to increase the density. In this work, polyamide 12 and submicrometer sized alumina were used. Homogeneous spherical composite powders in the form of microspheres were prepared by a novel phase inversion technique. The composite powder showed good flowability and formability. Differential scanning calorimetry (DSC) was used to determine the thermal properties and laser processing window of the composite powder. The effect of the laser beam scanning parameters such as laser power, scan speed and scan spacing on the fabrication of green parts was assessed. Green parts were subsequently debinded and furnace sintered to produce crack-free alumina components. The sintered density of the parts however was limited to only 50 % of the theoretical density since the intersphere space formed during microsphere deposition and SLS remained after sintering. ; status: published