| 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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Grossin, David
Institutul Naţional al Patrimoniului
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024Understanding the consolidation mechanism of selective laser sintering/powder bed selective laser process of ceramics: Hydroxyapatite casecitations
- 2024Understanding the consolidation mechanism of selective laser sintering/powder bed selective laser process of ceramics: Hydroxyapatite casecitations
- 20233D printed triply periodic minimal surfaces calcium phosphate bone substitute: The effect of porosity design on mechanical propertiescitations
- 2023A Novel Approach for Powder Bed Fusion of Ceramics Using Two Laser Systemscitations
- 2022Tailoring hydroxyapatite suspensions by stirred bead millingcitations
- 2022Powder bed selective laser process (sintering/melting) applied to tailored calcium phosphate-based powderscitations
- 2022Masked stereolithography of hydroxyapatite bioceramic scaffolds ; Masked stereolithography of hydroxyapatite bioceramic scaffolds: From powder tailoring to evaluation of 3D printed parts propertiescitations
- 2022Bioactive glass nanoparticles decorated with catechol-functionalized polyesters: towards macroporous nanocomposite scaffolds
- 2022Poly( d,l -lactide)-Grafted Bioactive Glass Nanoparticles: From Nanobricks to Freeze-Cast Scaffolds for Bone Substitutioncitations
- 2022Post-infiltration to improve the density of binder jetting ceramic partscitations
- 2021Robocasting of self-setting bioceramics: from paste formulation to 3D part characteristicscitations
- 2021Experimental and numerical study for direct powder bed selective laser processing (sintering/melting) of silicon carbide ceramiccitations
- 2020Well-defined polyester-grafted silica nanoparticles for biomedical applications: Synthesis and quantitative characterizationcitations
- 2020First successful stabilization of consolidated amorphous calcium phosphate (ACP) by cold sintering: toward highly-resorbable reactive bioceramicscitations
- 2019Tailoring hydroxyapatite powder properties for 3D printing based on selective laser melting or sintering
- 2017A review of the additive manufacturing (3DP) of bioceramics: alumina, zirconia (PSZ) and hydroxyapatitecitations
- 2017Biomineralization of a titanium-modified hydroxyapatite semiconductor on conductive wool fiberscitations
- 2016In vitro bioactivity and stem cells attachment of three-dimensionally ordered macroporous bioactive glass incorporating iron oxidescitations
- 2015Biomimetic apatite-based composite materials obtained by spark plasma sintering (SPS): physicochemical and mechanical characterizationscitations
- 2014Plasma-Sprayed Apatite Coatings: Review of Physical-Chemical Characteristics and Their Biological Consequences
- 2014Comparison of Physical-chemical and Mechanical Properties of Chlorapatite and Hydroxyapatite Plasma Sprayed Coatings
- 2014Comparative Study of Conversion of Coral with Ammonium Dihydrogen Phosphate and Orthophosphoric Acid to Produce Calcium Phosphates
- 2012Shaping of nanostructured materials or coatings through Spark Plasma Sinteringcitations
- 2012Hydroxyapatite coating on titanium by a low energy plasma spraying mini-guncitations
- 2010Biomimetic apatite sintered at very low temperature by spark plasma sintering: Physico-chemistry and microstructure aspectscitations
- 2010Medical potentialities of biomimetic apatites through adsorption, ionic substitution, and mineral/organic associations: three illustrative examplescitations
- 2009Low temperature consolidation of nanocrystalline apatites. Toward a new generation of calcium phosphate ceramics
- 2006Development of microwave heating process in order to elaborate ceramics with particular electric properties
Places of action
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article
A Novel Approach for Powder Bed Fusion of Ceramics Using Two Laser Systems
Abstract
The one-step AM process is considered the goal many researchers seek in the field of Additive Manufacturing (AM) of high-technology ceramics. Among the several AM techniques, only Powder Bed Fusion (PBF) can directly print high-technology ceramics using one step. However, the PBF technique faces numerous challenges to efficiently be employed in the PBF of ceramics. These challenges include the formation of cracks, generated thermal stress, effective laser–powder interaction, and low acquired relative density. This study developed a new preheating mechanism for ceramic materials using two laser systems to surpass beyond these challenges and successfully print ceramics with a single-step AM method. One laser is used to preheat the powder particles before the second laser is utilised to complete the melting/sintering process. Both lasers travel along the same scanning path. There is a slight delay (0.0001 s) between the preheating laser and the melting/sintering laser to guarantee that the melting/sintering laser scans a properly preheated powder. To further facilitate testing of the preheating system, a numerical model has been developed to simulate the preheating and melting process and to acquire proper process parameters. The developed numerical model was shown to determine the correct process parameters without needing costly and time-consuming experiments. Alumina samples (10 × 10 × 6 mm<sup>3</sup>) were successfully printed using alumina powder as feedstock. The surface of the samples was nearly defect-free. The samples’ relative densities exceeded 80%, the highest reported relative density for alumina produced by a single-step AM method. This discovery can significantly accelerate the transition to a one-step AM process of ceramics.