Fatigue Behavior of PZT‐Based Nanocomposites with Fine Platinum Particles

Nanocomposites of lead zirconate titanate (Pb(Zrx,Ti1−x)O3, PZT) with secondary-phase dispersoids of metallic platinum were fabricated. Fatigue (crack-growth) behavior of the unpoled PZT/platinum nanocomposite that contained precracks produced by a Vickers diamond indenter under electrical cyclic loading was investigated. The crack growth was monitored via optical microscopy and was dependent on the number of cycles to which the sample was subjected. The growth of the indentation crack was significantly reduced in the PZT/platinum nanocomposite.

[1]  K. Niihara,et al.  In-situ fabrication of ceramic/Metal nanocomposites by reduction reaction in barium titanate–Metal oxide systems , 1998 .

[2]  K. Niihara,et al.  Low‐Temperature Sintering and High‐Strength Pb(Zr,Ti)O3‐Matrix Composites Incorporating Silver Particles , 1997 .

[3]  K. Niihara,et al.  Subcritical crack growth phenomenon and fractography of barium titanate and barium titanate-based composite , 1997 .

[4]  Q. Jiang,et al.  Grain size dependence of electric fatigue behavior of hot pressed PLZT ferroelectric ceramics , 1994 .

[5]  Grady S. White,et al.  Fracture Behavior of Cyclically Loaded PZT , 1994 .

[6]  Anthony G. Evans,et al.  Electric-field-induced fatigue crack growth in piezoelectrics , 1994 .

[7]  Takenobu Sakai,et al.  Durability of Piezoelectric Ceramics for an Actuator , 1992 .

[8]  Zhigang Suo,et al.  Fracture mechanics for piezoelectric ceramics , 1992 .

[9]  K. Niihara.  New Design Concept of Structural Ceramics , 1991 .

[10]  Andrew P. Ritter,et al.  Designing Cofired Multilayer Electrostrictive Actuators for Reliability , 1989 .

[11]  Y. Choa,et al.  Effects of Second Phase Dispersions on Microstructure and Mechanical Properties in MgO/SiC Nanocomposites , 1998 .

[12]  K. Niihara,et al.  Perovskite-type BaTiO3 ceramics containing particulate SiC: Part II Microstructure and mechanical properties , 1998 .

[13]  K. Niihara,et al.  Particle/Matrix Interface and Its Role in Creep Inhibition in Alumina/Silicon Carbide Nanocomposites , 1996 .