Title :
R-curves in lead zirconate titanate (PZT)
Author :
Karastamatis, T. ; Lynch, C.S. ; Lucato, S. ; Lupascu, D. ; Rödel, J.
Author_Institution :
G.W. Woodruff Sch. of Mech. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
R-curves were measured using a surface crack in flexure for an unpoled, ferroelastic composition of PZT. Grain size, polishing away the residual stress zone created by the indentation, and thermal depoling did not have a significant effect on the R-curve behavior. A larger initial flaw size resulted in a lower R-curve plateau value
Keywords :
bending; cracks; ferroelasticity; grain size; indentation; internal stresses; lead compounds; piezoceramics; polishing; PZT; PbZrO3TiO3; R-curve; ferroelastic composition; flaw size; grain size; indentation; piezoelectric ceramic; polishing; residual stress; surface crack in flexure method; thermal depoling; Equations; Ferroelectric materials; Grain size; Materials science and technology; Piezoelectric actuators; Piezoelectric materials; Residual stresses; Surface cracks; Tensile stress; Titanium compounds;
Conference_Titel :
Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-5940-2
DOI :
10.1109/ISAF.2000.941504
