| 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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Minea, Tiberiu
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Vapor chemical composition in Electron Beam Powder Bed Fusion using Ti-6Al-4V powder
- 2023Impact of self-sputtering in high power impulse magnetron sputtering (HiPIMS) with heliumcitations
- 2023Spatiotemporal characterization of evaporated atoms during electron beam melting additive manufacturing by advanced laser diagnosticscitations
- 2023The Use of Sacrificial Graphite-like Coating to Improve Fusion Efficiency of Copper in Selective Laser Meltingcitations
- 2022Saturation pressure of nonequilibrium titanium evaporation during additive manufacturing by electron powder bed fusioncitations
- 2022Saturation pressure of nonequilibrium titanium evaporation during additive manufacturing by electron powder bed fusioncitations
- 2021Modeling of high power impulse magnetron sputtering discharges with graphite targetcitations
- 2021Behavior of high current density pulsed magnetron discharge with a graphite targetcitations
- 2021Phototribology: control of friction by lightcitations
- 2020Low resistivity amorphous carbon-based thin films employed as anti-reflective coatings on coppercitations
- 2019Tuning high power impulse magnetron sputtering discharge and substrate bias conditions to reduce the intrinsic stress of TiN thin filmscitations
- 2018Influence of backscattered neutrals on the grain size of magnetron-sputtered TaN thin filmscitations
- 2017Benefits of energetic ion bombardment for tailoring stress and microstructural evolution during growth of Cu thin filmscitations
- 2017Epitaxial growth of Cu(001) thin films onto Si(001) using a single-step HiPIMS processcitations
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article
The Use of Sacrificial Graphite-like Coating to Improve Fusion Efficiency of Copper in Selective Laser Melting
Abstract
International audience ; Thin and ultrathin carbon films reduce the laser energy required for copper powder fusion in selective laser melting (SLM). The low absorption of infrared (IR) radiation and its excellent thermal conductivity leads to an intricate combination of processing parameters to obtain high-quality printed parts in SLM. Two carbon-based sacrificial thin films were deposited onto copper to facilitate light absorption into the copper substrates. Graphite-like (3.5 µm) and ultra-thin (25 nm) amorphous carbon films were deposited by aerosol spraying and direct current magnetron sputtering, respectively. The melting was analyzed for several IR (1.06 µm) laser powers in order to observe the coating influence on the energy absorption. Scanning electron microscopy showed the topography and cross-section of the thermally affected area, electron backscatter diffraction provided the surface chemical composition of the films, and glow-discharge optical emission spectroscopy (GDOES) allowed the tracking of the in-deep chemical composition of the 3D printed parts using carbon film-covered copper. Ultra-thin films of a few tens of nanometers could reduce fusion energy by about 40%, enhanced by interferences phenomena. Despite the lower energy required, the melting maintained good quality and high wettability when using top carbon coatings. A copper part was SLM printed and associated with 25 nm of carbon deposition between two copper layers. The chemical composition analysis demonstrated that the carbon was intrinsically removed during the fusion process, preserving the high purity of the copper part.