Fracture of ferroelectric and relaxor electro-ceramics: Influence of electric field

被引：84

作者：

Lynch, CS ^{[1
]}

机构：

[1] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

来源：

ACTA MATERIALIA | 1998年 / 46卷 / 02期

关键词：

D O I：

10.1016/S1359-6454(97)00225-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Crack growth is studied in a ferroelectric and a relaxer composition of lead lanthanum zirconate titanate (PLZT) ceramic using Vicker's indentations with electric field. The polarized ferroelectric composition displays excess crack growth perpendicular to the polarization direction. This excess crack growth is increased by an electric field in the polarization direction. The relaxor composition does not display this excess crack growth. Results suggest that the excess crack growth perpendicular to the polarization is the result of intergranular residual stress. (C) 1998 Acta Metallurgica Inc.

引用

页码：599 / 608

页数：10

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