Wang, Xueyao ; Kodumudi Venkataraman, Lalitha ; Tan, Chi ; Li, Yingwei (2020)
Fracture behavior in electrically poled alkaline bismuth- and potassium- based lead-free piezoceramics using Vickers indentation.
In: Scripta Materialia, 194
doi: 10.1016/j.scriptamat.2020.113647
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The fracture behavior of unpoled and electrically poled Ka 0.5 Na 0.5 NbO 3 (KNN)- and Na 1/2 Bi 1/2 TiO 3 (NBT)- based lead-free piezoceramics were characterized using the Vicker’s indentation technique and com- pared with soft Pb(Zr,Ti)O 3 piezoceramics. In the unpoled state, NBT-based piezoceramics demonstrate the largest fracture toughness in comparison with KNN-based and soft PZT piezoceramics due to its large intrinsic fracture toughness, which is in accordance with the previous reports. In the electrically poled state, KNN- and NBT- based piezoceramics exhibit large fracture toughness along the poling direction as opposed to perpendicular to the poling direction, with aspect ratios of 1.2 and 1.1, significantly smaller than that for PZT (1.8). The variations of the remanent strain and the process zone, which are related to the texture and the material properties during crack propagation were used to rationalize the results.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Wang, Xueyao ; Kodumudi Venkataraman, Lalitha ; Tan, Chi ; Li, Yingwei |
| Art des Eintrags: | Bibliographie |
| Titel: | Fracture behavior in electrically poled alkaline bismuth- and potassium- based lead-free piezoceramics using Vickers indentation |
| Sprache: | Englisch |
| Publikationsjahr: | 30 November 2020 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Scripta Materialia |
| Jahrgang/Volume einer Zeitschrift: | 194 |
| DOI: | 10.1016/j.scriptamat.2020.113647 |
| URL / URN: | https://www.sciencedirect.com/science/article/abs/pii/S13596... |
| Kurzbeschreibung (Abstract): | The fracture behavior of unpoled and electrically poled Ka 0.5 Na 0.5 NbO 3 (KNN)- and Na 1/2 Bi 1/2 TiO 3 (NBT)- based lead-free piezoceramics were characterized using the Vicker’s indentation technique and com- pared with soft Pb(Zr,Ti)O 3 piezoceramics. In the unpoled state, NBT-based piezoceramics demonstrate the largest fracture toughness in comparison with KNN-based and soft PZT piezoceramics due to its large intrinsic fracture toughness, which is in accordance with the previous reports. In the electrically poled state, KNN- and NBT- based piezoceramics exhibit large fracture toughness along the poling direction as opposed to perpendicular to the poling direction, with aspect ratios of 1.2 and 1.1, significantly smaller than that for PZT (1.8). The variations of the remanent strain and the process zone, which are related to the texture and the material properties during crack propagation were used to rationalize the results. |
| Freie Schlagworte: | Fracture toughness, Lead-free piezoceramics, Domain switching/phase transformation, Texture, Vicker’s indentation |
| 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: | 02 Dez 2020 07:33 |
| Letzte Änderung: | 02 Dez 2020 07:33 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum