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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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Li, Xiao
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2023Determining role of W+ ions in the densification of TiAlWN thin films grown by hybrid HiPIMS/DCMS technique with no external heatingcitations
- 2023Discovery of Guinier-Preston zone hardening in refractory nitride ceramicscitations
- 2022Manufacture aluminum alloy tube from powder with a single-step extrusion via ShAPEcitations
- 2022Dense, single-phase, hard, and stress-free Ti0.32Al0.63W0.05N films grown by magnetron sputtering with dramatically reduced energy consumptioncitations
- 2022Porosity evolution during heating of copper made from powder by friction extrusioncitations
- 2021Toward energy-efficient physical vapor deposition : Routes for replacing substrate heating during magnetron sputter deposition by employing metal ion irradiationcitations
- 2021Microstructural evolution in Cu–Nb processed via friction consolidationcitations
- 2021Si tunnel junctions obtained by proximity rapid thermal diffusion for tandem photovoltaic cells
- 2021Si tunnel junctions obtained by proximity rapid thermal diffusion for tandem photovoltaic cells
- 2021Towards energy-efficient physical vapor deposition : Mapping out the effects of W+ energy and concentration on the densification of TiAlWN thin films grown with no external heatingcitations
- 2021Copper carbon composite wire with a uniform carbon dispersion made by friction extrusioncitations
- 2013Processing and Performance of Polymeric Transparent Conductive Compositescitations
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article
Porosity evolution during heating of copper made from powder by friction extrusion
Abstract
Friction extrusion was used to compact and extrude solid copper rods from feedstock powders. Following extrusion, considerable porosity was observed throughout the extrudate cross section due to the entrained porosity in the feedstock material and the extrusion process. The thermal stability of the extrudate was investigated via a series of heat treatments. Porosity evolution exhibited three distinct stages—an unchanged plateau (0–300 °C) followed by an abrupt increase (400–500 °C) and ultimately a reduction, as the temperature increases (>500 °C). The peak porosity measured was ∼25%. The underlying driving force for pore evolution is described as the competition between the internal pore pressure, material strength, and sintering kinetics, as a function of temperature. The observed porosity evolution and driving force are not expected to be limited to copper. Thus, this manuscript reveals an important consideration regarding the microstructure thermal stability as advanced manufacturing methods involving direct powder extrusion are explored.