Chen, Wei ; Lupascu, Doru C. ; Rödel, Jürgen ; Lynch, Christopher S. (2001)
Short Crack R-Curves in Ferroelectric and Electrostrictive PLZT.
In: Journal of the American Ceramic Society, 84 (3)
doi: 10.1111/j.1151-2916.2001.tb00704.x
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
This work describes the measurement of R-curve behavior in ferroelectric ceramics using four-point bend specimens with controlled semielliptical surface cracks. The results are compared for two compositions of lead lanthanum zirconate titanate. One exhibits ferroelastic behavior, the other electrostrictive linear elastic behavior. R-curves are measured in the crack length regime of 0.1 to 0.8 mm. The ferroelastic composition displays a toughness increase from 0.5 to 1.2 MPa·m1/2. The linear elastic composition displays a flat R-curve. The R-curve behavior is attributed to ferroelastic toughening.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2001 |
| Autor(en): | Chen, Wei ; Lupascu, Doru C. ; Rödel, Jürgen ; Lynch, Christopher S. |
| Art des Eintrags: | Bibliographie |
| Titel: | Short Crack R-Curves in Ferroelectric and Electrostrictive PLZT |
| Sprache: | Englisch |
| Publikationsjahr: | März 2001 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 84 |
| (Heft-)Nummer: | 3 |
| DOI: | 10.1111/j.1151-2916.2001.tb00704.x |
| Kurzbeschreibung (Abstract): | This work describes the measurement of R-curve behavior in ferroelectric ceramics using four-point bend specimens with controlled semielliptical surface cracks. The results are compared for two compositions of lead lanthanum zirconate titanate. One exhibits ferroelastic behavior, the other electrostrictive linear elastic behavior. R-curves are measured in the crack length regime of 0.1 to 0.8 mm. The ferroelastic composition displays a toughness increase from 0.5 to 1.2 MPa·m1/2. The linear elastic composition displays a flat R-curve. The R-curve behavior is attributed to ferroelastic toughening. |
| Freie Schlagworte: | cracks/cracking; R-curve; lead lanthanum zirconate titanate |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 14 Jul 2011 11:00 |
| Letzte Änderung: | 05 Mär 2013 09:50 |
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