Porz, Lukas ; Klomp, Arne Jan ; Fang, Xufei ; Li, Ning ; Yildirim, Can ; Detlefs, Carsten ; Bruder, Enrico ; Höfling, Marion ; Rheinheimer, Wolfgang ; Patterson, Eric A. ; Gao, Peng ; Durst, Karsten ; Nakamura, Atsutomo ; Albe, Karsten ; Simons, Hugh ; Rödel, Jürgen (2023)
Dislocation-toughened ceramics.
In: Materials Horizons, 2021, 8 (5)
doi: 10.26083/tuprints-00023191
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
Functional and structural ceramics have become irreplaceable in countless high-tech applications. However, their inherent brittleness tremendously limits the application range and, despite extensive research efforts, particularly short cracks are hard to combat. While local plasticity carried by mobile dislocations allows desirable toughness in metals, high bond strength is widely believed to hinder dislocation-based toughening of ceramics. Here, we demonstrate the possibility to induce and engineer a dislocation microstructure in ceramics that improves the crack tip toughness even though such toughening does not occur naturally after conventional processing. With modern microscopy and simulation techniques, we reveal key ingredients for successful engineering of dislocation-based toughness at ambient temperature. For many ceramics a dislocation-based plastic zone is not impossible due to some intrinsic property (e.g. bond strength) but limited by an engineerable quantity, i.e. the dislocation density. The impact of dislocation density is demonstrated in a surface near region and suggested to be transferrable to bulk ceramics. Unexpected potential in improving mechanical performance of ceramics could be realized with novel synthesis strategies.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Porz, Lukas ; Klomp, Arne Jan ; Fang, Xufei ; Li, Ning ; Yildirim, Can ; Detlefs, Carsten ; Bruder, Enrico ; Höfling, Marion ; Rheinheimer, Wolfgang ; Patterson, Eric A. ; Gao, Peng ; Durst, Karsten ; Nakamura, Atsutomo ; Albe, Karsten ; Simons, Hugh ; Rödel, Jürgen |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Dislocation-toughened ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2021 |
| Verlag: | Royal Society of Chemistry |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials Horizons |
| Jahrgang/Volume einer Zeitschrift: | 8 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.26083/tuprints-00023191 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/23191 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| Kurzbeschreibung (Abstract): | Functional and structural ceramics have become irreplaceable in countless high-tech applications. However, their inherent brittleness tremendously limits the application range and, despite extensive research efforts, particularly short cracks are hard to combat. While local plasticity carried by mobile dislocations allows desirable toughness in metals, high bond strength is widely believed to hinder dislocation-based toughening of ceramics. Here, we demonstrate the possibility to induce and engineer a dislocation microstructure in ceramics that improves the crack tip toughness even though such toughening does not occur naturally after conventional processing. With modern microscopy and simulation techniques, we reveal key ingredients for successful engineering of dislocation-based toughness at ambient temperature. For many ceramics a dislocation-based plastic zone is not impossible due to some intrinsic property (e.g. bond strength) but limited by an engineerable quantity, i.e. the dislocation density. The impact of dislocation density is demonstrated in a surface near region and suggested to be transferrable to bulk ceramics. Unexpected potential in improving mechanical performance of ceramics could be realized with novel synthesis strategies. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-231919 |
| Zusätzliche Informationen: | Supplementary information: https://t1p.de/jur2y Supplementary movie 1: https://t1p.de/qb2r1 Supplementary movie 2: https://t1p.de/g8abc Supplementary movie 3: https://t1p.de/608mn Supplementary movie 4: https://t1p.de/s2eno Supplementary movie 5: https://t1p.de/5r441 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe |
| Hinterlegungsdatum: | 28 Feb 2023 10:13 |
| Letzte Änderung: | 01 Mär 2023 06:04 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Dislocation-toughened ceramics. (deposited 28 Feb 2023 10:13) [Gegenwärtig angezeigt]
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