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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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Pellegrini, Alessandro
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Additive manufacturing of copper parts using extrusion and sinter-based technology: evaluation of the influence of printing parameters and debinding methodcitations
- 2024Impact of strand deposition and infill strategies on the properties of monolithic copper via material extrusion additive manufacturingcitations
- 2024Analysis of Microstructure and Mechanical Properties of CoCrMo Alloys Processed by Metal Binder Jetting Multi-Step Technique
- 2024Auxetic behavior of 3D-printed structure made in acrylonitrile butadiene styrene and carbon fiber-reinforced polyamidecitations
- 2023Comparative study on the properties of 17-4 PH stainless steel parts made by metal fused filament fabrication process and atomic diffusion additive manufacturingcitations
- 2023Influence of aging treatments on 17-4 PH stainless steel parts realized using material extrusion additive manufacturing technologiescitations
- 2023Effect of layer and raster orientation on bending properties of 17-4 PH printed via material extrusion additive manufacturing technologycitations
- 2022Comparative study on the properties of 17-4 PH stainless steel parts made by metal fused filament fabrication process and atomic diffusion additive manufacturingcitations
- 20223D Printing of parts using metal extrusion: an overview of shaping debinding and sintering technologycitations
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article
Impact of strand deposition and infill strategies on the properties of monolithic copper via material extrusion additive manufacturing
Abstract
The present research presents a comprehensive study on the process optimisation and characterisation of fully dense and pure Cu parts manufactured by Material Extrusion Additive Manufacturing (MEX). This technology is an emerging approach to additively manufacture high-performance metal components due to its multi-step nature that allows to shape and subsequently sinter complex design parts. A commercially available filament with 60 vol% (93 wt%) copper particles and polymeric binders was used and characterised in this study. Two approaches were combined for the first time to maximise the final density of the copper parts; a statistical approach (using ANOVA) and an optimisation approach based on the strand cross-section. Based on the former, the flow rate multiplier during printing has a significant effect on the density of the as-printed parts. The latter aimed at studying the effect of the ratio between extrusion width, layer height, and nozzle diameter on the deposited strand morphology. An extrusion width equal to and a layer height lower than the nozzle diameter contribute to precise strand dimensions, leading to improved control of the final green density. After solvent and thermal debinding followed by pressureless and supportless sintering in pure H2 at 1050 °C, the copper parts resulted in a relative density > 95 % and an electrical conductivity of ∼93 %IACS as an indication of the purity of the starting material and the quality of the whole process chain. Tensile testing of as-sintered dog-bone samples, built with 0°, 90° and ±45° infill patterns and a single wall contour, revealed the best results for the ±45° strategy with an ultimate tensile strength of 164 MPa and an elongation at fracture of 24 %. Finally, a copper coil for electromagnetic applications was manufactured, for the first time, via filament-based MEX and tested. It reported an electrical conductivity competitive to that reported in the literature (∼70 %IACS). This result was discussed in relation to a simple monolithic Cu geometry to provide insight into the complexity and concomitant scientific relevance of applying MEX to functional components.