Fang, Xufei (2024)
Mechanical tailoring of dislocations in ceramics at room temperature: a perspective.
In: Journal of the American Ceramic Society, 107 (3)
doi: 10.1111/jace.19362
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The potential of dislocations (line defects) in ceramics may have been greatly underrated until most recently. Promising proofs-of-concept have been demonstrated for dislocation-tuned functional and mechanical properties, revealing a new research front for dislocations in ceramics for a wide range of potential applications. However, it is commonly known that ceramics are hard (difficult to deform) and brittle (easy to fracture), particularly at room temperature. It remains a great challenge to mechanically tailor dislocations in ceramics. To address this pressing bottleneck, this article discusses the mechanics-based dislocation engineering in ceramics by examining the three fundamental factors of dislocation nucleation, multiplication, and motion. Successful experimental approaches to tune dislocation density and plastic zone size on single-crystal strontium titanate are demonstrated. The dislocation-based competition between plastic deformation and crack formation is discussed. The aspects of coupling external fields to manipulate dislocations are highlighted, which may hold the key to modulating the charged dislocation cores in ceramics and opening new routes for mechanical tailoring of dislocations at room temperature. Some open questions and challenges for engineering dislocations in ceramics are discussed.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Fang, Xufei |
| Art des Eintrags: | Bibliographie |
| Titel: | Mechanical tailoring of dislocations in ceramics at room temperature: a perspective |
| Sprache: | Englisch |
| Publikationsjahr: | März 2024 |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 107 |
| (Heft-)Nummer: | 3 |
| DOI: | 10.1111/jace.19362 |
| Kurzbeschreibung (Abstract): | The potential of dislocations (line defects) in ceramics may have been greatly underrated until most recently. Promising proofs-of-concept have been demonstrated for dislocation-tuned functional and mechanical properties, revealing a new research front for dislocations in ceramics for a wide range of potential applications. However, it is commonly known that ceramics are hard (difficult to deform) and brittle (easy to fracture), particularly at room temperature. It remains a great challenge to mechanically tailor dislocations in ceramics. To address this pressing bottleneck, this article discusses the mechanics-based dislocation engineering in ceramics by examining the three fundamental factors of dislocation nucleation, multiplication, and motion. Successful experimental approaches to tune dislocation density and plastic zone size on single-crystal strontium titanate are demonstrated. The dislocation-based competition between plastic deformation and crack formation is discussed. The aspects of coupling external fields to manipulate dislocations are highlighted, which may hold the key to modulating the charged dislocation cores in ceramics and opening new routes for mechanical tailoring of dislocations at room temperature. Some open questions and challenges for engineering dislocations in ceramics are discussed. |
| Freie Schlagworte: | charged dislocation core, dislocation engineering, dislocations in ceramics, room-temperature, plasticity, strontium titanate |
| Zusätzliche Informationen: | First published online: 03 August 2023 |
| 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: | 11 Jan 2024 07:43 |
| Letzte Änderung: | 11 Jan 2024 07:48 |
| PPN: | 514615311 |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
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