Salem, Mostafa Negm ; Ding, Kuan ; Rödel, Jürgen ; Fang, Xufei (2023)
Thermally enhanced dislocation density improves both hardness and fracture toughness in single‐crystal SrTiO₃.
In: Journal of the American Ceramic Society, 2023, 106 (2)
doi: 10.26083/tuprints-00023706
Artikel, Zweitveröffentlichung, Verlagsversion
 | Es ist eine neuere Version dieses Eintrags verfügbar. |
Kurzbeschreibung (Abstract)
Dislocation‐tuned functionality in ceramic oxides for potential versatile applications gains increasing attention. As the widespread chemical doping suffers from poor temperature stability, dislocations in well‐controlled mesoscopic structure may be an alternative to thermally stable intrinsic doping features. To this end, the dislocation density in plastic zones introduced by cyclic Brinell indentation is considered under thermal annealing conditions. The considerably enhanced dislocation density due to thermal treatment is found to impact both microhardness and fracture toughness, albeit only to a modest degree. The mechanistic understanding centers around enhanced mobility and multiplication of the pre‐engineered dislocations at elevated temperatures driven by the residual indentation stress, as well as the strengthened interaction of point defects and dislocations at high temperature.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Salem, Mostafa Negm ; Ding, Kuan ; Rödel, Jürgen ; Fang, Xufei |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Thermally enhanced dislocation density improves both hardness and fracture toughness in single‐crystal SrTiO₃ |
| Sprache: | Englisch |
| Publikationsjahr: | 28 November 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2023 |
| Ort der Erstveröffentlichung: | Oxford |
| Verlag: | Wiley-Blackwell |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 106 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.26083/tuprints-00023706 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/23706 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | Dislocation‐tuned functionality in ceramic oxides for potential versatile applications gains increasing attention. As the widespread chemical doping suffers from poor temperature stability, dislocations in well‐controlled mesoscopic structure may be an alternative to thermally stable intrinsic doping features. To this end, the dislocation density in plastic zones introduced by cyclic Brinell indentation is considered under thermal annealing conditions. The considerably enhanced dislocation density due to thermal treatment is found to impact both microhardness and fracture toughness, albeit only to a modest degree. The mechanistic understanding centers around enhanced mobility and multiplication of the pre‐engineered dislocations at elevated temperatures driven by the residual indentation stress, as well as the strengthened interaction of point defects and dislocations at high temperature. |
| Freie Schlagworte: | dislocation, fracture toughness, hardness, strontium titanate, thermal treatment |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-237067 |
| 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 Nov 2023 10:21 |
| Letzte Änderung: | 29 Nov 2023 10:31 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Thermally enhanced dislocation density improves both hardness and fracture toughness in single‐crystal SrTiO₃. (deposited 28 Nov 2023 10:21) [Gegenwärtig angezeigt]
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