1. Blacklight sintering of ceramics
- Author
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Lukas Porz, Michael Scherer, Daniel Huhn, Luisa-Marie Heine, Simon Britten, Lars Rebohle, Marcel Neubert, Martin Brown, Peter Lascelles, Ross Kitson, Daniel Rettenwander, Lovro Fulanovic, Enrico Bruder, Patrick Breckner, Daniel Isaia, Till Frömling, Jürgen Rödel, and Wolfgang Rheinheimer
- Subjects
Mechanics of Materials ,Process Chemistry and Technology ,flash lamp annealing ,laser annealing ,General Materials Science ,ceramics ,Electrical and Electronic Engineering - Abstract
For millennia, ceramics have been densified via sintering in a furnace, a time-consuming and energy-intensive process. The need to minimize environmental impact calls for new physical concepts beyond large kilns relying on thermal radiation and insulation. Here, we realize ultrarapid heating with intense blue and UV-light. Thermal management is quantified in experiment and finite element modelling and features a balance between absorbed and radiated energy. With photon energy above the band gap to optimize absorption, bulk ceramics are sintered within seconds and with outstanding efficiency (≈2 kWh kg−1) independent of batch size. Sintering on-the-spot with blacklight as a versatile and widely applicable power source is demonstrated on ceramics needed for energy storage and conversion and in electronic and structural applications foreshadowing economic scalability.
- Published
- 2022
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