| 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
Saturation pressure of nonequilibrium titanium evaporation during additive manufacturing by electron powder bed fusion
Abstract
<jats:p>Electron beam powder bed fusion (E-PBF) is an attractive technology for the additive manufacturing of metal parts. However, process improvements require precise control of the energy transferred to the powder by the electron beam. Here, we used tunable diode laser absorption spectroscopy (TD-LAS) to measure the velocity distribution functions of titanium atoms evaporated during E-PBF. The narrow spectral ranges emitted by laser diodes allow for high-resolution absorption profiles of the evaporated atoms and thus accurate determinations of their Doppler broadening, density, and temperature during melting. The obtained vapor temperature reveals overheating at the surface of the melt pool relative to the low-pressure (0.1 Pa) boiling point of titanium, indicating that evaporation occurs under nonequilibrium conditions. We characterized the influence of the linear energy density on titanium evaporation and found it to be consistent with the saturation vapor pressure. Our characterization of the vapor properties provides reliable inputs for melt pool simulations. Furthermore, TD-LAS may be further exploited to prevent the evaporation of low-concentration alloy elements, which can induce defects in the printed part.</jats:p>