期刊
SCRIPTA MATERIALIA
卷 66, 期 5, 页码 292-295出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.11.015
关键词
Piezoelectric ceramics; Atomic force microscopy (AFM); Electrical properties; Fracture
This paper Presents the surface potential distributions of pores, grain boundaries (GBs) and indentation cracks of lead zirconate titanate piezoceramics. The pores, GBs and indentation cracks in poled samples are higher potential regions in comparison to other regions. However, GBs and indentation cracks have no distinguishing potential feature in unpoled samples. Coupled with an investigation of the fracture modes, the role of the electrostatic repulsive force induced by charges accumulated in GBs on the ferroelectric fracture is discussed. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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