Sofia, D;
Macrì, D;
Barletta, D;
Lettieri, P;
Poletto, M;
(2021)
Use of titania powders in the laser sintering process: Link between process conditions and product mechanical properties.
Powder Technology
, 381
pp. 181-188.
10.1016/j.powtec.2020.11.075.
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Abstract
Selective Laser Sintering (SLS) of Titania powders is studied to understand how the initial material properties and the process conditions affect the degree of sintering/melting and the mechanical properties of the semi-3D artefact produced.Five samples with differing particle size were used to explore the feasibility of processing them by SLS. Laser power and scan speed were studied as process variables to assess and quantify the effect of their changes on the properties of product. The measured tensile strength was used in the equation for the strength of the powder’s agglomerates developed by Rumpf, which allowed estimating the size of the sintered necks. The sintering temperature of each powder sample was determined experimentally and used to predict the size of the sintered neck for the different powder grain size using different literature models; these values were then compared with the values obtained from the experiments.
| Type: | Article |
|---|---|
| Title: | Use of titania powders in the laser sintering process: Link between process conditions and product mechanical properties |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.powtec.2020.11.075 |
| Publisher version: | https://doi.org/10.1016/j.powtec.2020.11.075 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Selective laser sintering; titania powders; particle size distribution; mechanical properties; particle sintering model. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10119438 |
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