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Microstructure and Mechanical Properties of PMS-PZT Ceramics with Silica Additives

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Abstract:

The use of lead zirconate titanate ceramics for high power application must have superior mechanical properties, the composition Pb0.98Sr0.02(Mn1/3Sb2/3)0.05Zro.48Ti0.47O3 + x wt% SiO2 (x = 0-1.0) have been studied for this purpose. The microstructures were observed to study the improvement of mechanical properties by SEM and TEM. The nano-scale secondary phase of SiO2 and PbSiO3 were observed on the grain boundary and the twinned ZrO2 was found surrounded by PMS-PZT perovskite phase. The mechanism to the occurrence of twinned ZrO2 and its content increased with increasing Si concentration are discussed in the paper. The occurrence of the nonferroelectric phase such as ZrO2, SiO2 and PbSiO3 on the grain boundary should be the main reason for great improvement of fracture strength.

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Periodical:

Materials Science Forum (Volumes 475-479)

Pages:

1145-1148

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.1145

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Online since:

January 2005

Authors:

Zhi Gang Zhu, Bao Shan Li, Guo Rong Li, Xiang Ping Jiang, Qing Rui Yin

Keywords:

High Power, Mechanical, PMS-PZT, TEM

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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