|About this Abstract
||MS&T23: Materials Science & Technology
||Grain Boundaries, Interfaces, and Surfaces: Fundamental Structure-Property-Performance Relationships
||Blacklight Sintering of Ceramics
||Wolfgang Rheinheimer, Lukas Porz, Michael Scherer, Lovro Fulanovic, Till Frömling, Jürgen Rödel, Julian N. Ebert
|On-Site Speaker (Planned)
||Julian N. Ebert
For millennia, ceramics have been densified via sintering in a furnace, a time-consuming and energy-intensive process. The need to minimize environmental impact requires new physical concepts beyond large kilns relying on thermal radiation and insulation. Here, we realize ultra-rapid heating with intense blue and UV-light. Thermal management is achieved by balancing absorbed and radiated energy and quantified by experiments and finite element modeling. With photon energy above the band gap to optimize absorption, bulk ceramics are sintered within seconds and with outstanding efficiency (≈2 kWhkg-1) independent of batch size. Sintering on-the-spot with blacklight as a versatile and widely applicable power source is demonstrated on various different ceramics (e.g. SrTiO3, BaTiO3, alumina, YSZ and LLTO) needed for energy storage and conversion and in electronic and structural applications foreshadowing economic scalability.