Twisted-layer boron nitride ceramic with high deformability and strength
© 2024. The Author(s)..
Moiré superlattices formed by twisted stacking in van der Waals materials have emerged as a new platform for exploring the physics of strongly correlated materials and other emergent phenomena1-5. However, there remains a lack of research on the mechanical properties of twisted-layer van der Waals materials, owing to a lack of suitable strategies for making three-dimensional bulk materials. Here we report the successful synthesis of a polycrystalline boron nitride bulk ceramic with high room-temperature deformability and strength. This ceramic, synthesized from an onion-like boron nitride nanoprecursor with conventional spark plasma sintering and hot-pressing sintering, consists of interlocked laminated nanoplates in which parallel laminae are stacked with varying twist angles. The compressive strain of this bulk ceramic can reach 14% before fracture, about one order of magnitude higher compared with traditional ceramics (less than 1% in general), whereas the compressive strength is about six times that of ordinary hexagonal boron nitride layered ceramics. The exceptional mechanical properties are due to a combination of the elevated intrinsic deformability of the twisted layering in the nanoplates and the three-dimensional interlocked architecture that restricts deformation from propagating across individual nanoplates. The advent of this twisted-layer boron nitride bulk ceramic opens a gate to the fabrication of highly deformable bulk ceramics.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:626 |
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| Enthalten in: |
Nature - 626(2024), 8000 vom: 22. Feb., Seite 779-784 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wu, Yingju [VerfasserIn] |
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Date Completed 23.02.2024 Date Revised 27.02.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1038/s41586-024-07036-5 |
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| PPN (Katalog-ID): |
NLM368736369 |
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| 520 | |a © 2024. The Author(s). | ||
| 520 | |a Moiré superlattices formed by twisted stacking in van der Waals materials have emerged as a new platform for exploring the physics of strongly correlated materials and other emergent phenomena1-5. However, there remains a lack of research on the mechanical properties of twisted-layer van der Waals materials, owing to a lack of suitable strategies for making three-dimensional bulk materials. Here we report the successful synthesis of a polycrystalline boron nitride bulk ceramic with high room-temperature deformability and strength. This ceramic, synthesized from an onion-like boron nitride nanoprecursor with conventional spark plasma sintering and hot-pressing sintering, consists of interlocked laminated nanoplates in which parallel laminae are stacked with varying twist angles. The compressive strain of this bulk ceramic can reach 14% before fracture, about one order of magnitude higher compared with traditional ceramics (less than 1% in general), whereas the compressive strength is about six times that of ordinary hexagonal boron nitride layered ceramics. The exceptional mechanical properties are due to a combination of the elevated intrinsic deformability of the twisted layering in the nanoplates and the three-dimensional interlocked architecture that restricts deformation from propagating across individual nanoplates. The advent of this twisted-layer boron nitride bulk ceramic opens a gate to the fabrication of highly deformable bulk ceramics | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Zhang, Yang |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Xiaoyu |e verfasserin |4 aut | |
| 700 | 1 | |a Hu, Wentao |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Song |e verfasserin |4 aut | |
| 700 | 1 | |a Officer, Timothy |e verfasserin |4 aut | |
| 700 | 1 | |a Luo, Kun |e verfasserin |4 aut | |
| 700 | 1 | |a Tong, Ke |e verfasserin |4 aut | |
| 700 | 1 | |a Du, Congcong |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Liqiang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Baozhong |e verfasserin |4 aut | |
| 700 | 1 | |a Zhuge, Zewen |e verfasserin |4 aut | |
| 700 | 1 | |a Liang, Zitai |e verfasserin |4 aut | |
| 700 | 1 | |a Ma, Mengdong |e verfasserin |4 aut | |
| 700 | 1 | |a Nie, Anmin |e verfasserin |4 aut | |
| 700 | 1 | |a Yu, Dongli |e verfasserin |4 aut | |
| 700 | 1 | |a He, Julong |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Zhongyuan |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Bo |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Yanbin |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Zhisheng |e verfasserin |4 aut | |
| 700 | 1 | |a Tian, Yongjun |e verfasserin |4 aut | |
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