Deconvolving Ferroelastic and Phase Transformation Toughening in Pb(Zr_(1-x)Ti_x)O_3 and Pb_(1-y)La_x(Zr_(1-x)Ti_x)O_3

摘要

Ferroelastic toughening in Pb(Zr_(1-x)Ti_xO_3 (PZT) ceramics can be augmented by phase transformation toughening through the inclusion of partially stabilized TZ (PZT-ZrO_2). In order to deconvolve both these toughening modes, cubic Pb_(1-y)La_yZr_(1-x)Ti_xO_3 (PLZT) with and without zirconia (PLZT-ZrO_2) was characterized. R curve and stress-strain behavior yielded a quantification of strong toughening and a lack for switching propensity that could be contrasted to PZT and zirconia-toughened PZT. A clear path for toughening of PZT for future application is therefore provided.