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Microstructure and conductivity of blacklight‐sintered TiO₂, YSZ, and Li₀.₃₃La₀.₅₇TiO₃

Porz, Lukas ; Scherer, Michael ; Muhammad, Qaisar Khushi ; Higuchi, Kimitaka ; Li, Yan ; Koga, Shuhei ; Nakamura, Atsutomo ; Rheinheimer, Wolfgang ; Frömling, Till (2022)
Microstructure and conductivity of blacklight‐sintered TiO₂, YSZ, and Li₀.₃₃La₀.₅₇TiO₃.
In: Journal of the American Ceramic Society, 105 (12)
doi: 10.1111/jace.18686
Article, Bibliographie

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Abstract

Rapid densification of ceramics has been realized and its merits were demonstrated through multiple approaches out of which UHS and flash sintering attract recent attention. So far, however, scalability remains difficult. A rise in throughput and scalability is enabled by the introduction of blacklight sintering powered by novel light source technology. Intense illumination with photon energy above the bandgap (blacklight) allows high absorption efficiency and, hence, very rapid, contactless heating for all ceramics. While heating the ceramic directly with light without any furnace promises scalability, it simultaneously offers highly accurate process control. For the technology transfer to industry, attainable material quality needs to be assured. Here, we demonstrate the excellent microstructure quality of blacklight‐sintered ceramics observed with ultrahigh voltage electron microscopy revealing an option to tune nanoporosity. Moreover, we confirm that electronic, electron, oxygen, and lithium‐ion conductivities are equal to conventionally sintered ceramics. This gives the prospect of transmitting the merits of rapid densification to the scale of industrial kilns.

Item Type: Article
Erschienen: 2022
Creators: Porz, Lukas ; Scherer, Michael ; Muhammad, Qaisar Khushi ; Higuchi, Kimitaka ; Li, Yan ; Koga, Shuhei ; Nakamura, Atsutomo ; Rheinheimer, Wolfgang ; Frömling, Till
Type of entry: Bibliographie
Title: Microstructure and conductivity of blacklight‐sintered TiO₂, YSZ, and Li₀.₃₃La₀.₅₇TiO₃
Language: English
Date: 2022
Place of Publication: Darmstadt
Publisher: Wiley
Journal or Publication Title: Journal of the American Ceramic Society
Volume of the journal: 105
Issue Number: 12
DOI: 10.1111/jace.18686
Corresponding Links:
Abstract:

Rapid densification of ceramics has been realized and its merits were demonstrated through multiple approaches out of which UHS and flash sintering attract recent attention. So far, however, scalability remains difficult. A rise in throughput and scalability is enabled by the introduction of blacklight sintering powered by novel light source technology. Intense illumination with photon energy above the bandgap (blacklight) allows high absorption efficiency and, hence, very rapid, contactless heating for all ceramics. While heating the ceramic directly with light without any furnace promises scalability, it simultaneously offers highly accurate process control. For the technology transfer to industry, attainable material quality needs to be assured. Here, we demonstrate the excellent microstructure quality of blacklight‐sintered ceramics observed with ultrahigh voltage electron microscopy revealing an option to tune nanoporosity. Moreover, we confirm that electronic, electron, oxygen, and lithium‐ion conductivities are equal to conventionally sintered ceramics. This gives the prospect of transmitting the merits of rapid densification to the scale of industrial kilns.

Uncontrolled Keywords: blacklight sintering, conductivity, microstructure, sinter/sintering
Classification DDC: 600 Technology, medicine, applied sciences > 660 Chemical engineering
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 06 Dec 2023 09:52
Last Modified: 06 Dec 2023 09:52
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