Blacklight sintering of ceramics

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, Wolfgang Rheinheimer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Pages (from-to)1717-1726
Number of pages10
JournalMaterials Horizons
Volume9
Issue number6
DOIs
Publication statusPublished - 8 Apr 2022
Externally publishedYes

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Process Chemistry and Technology
  • Electrical and Electronic Engineering

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