Enhancing Role of Stress on Electric Field Induced Delayed Fracture of a PZT--5 Ferroelelctric Ceramics

Acta Metall Sin

2004, Vol. 40

Issue (6): 585- DOI:

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Enhancing Role of Stress on Electric Field Induced Delayed Fracture of a PZT--5 Ferroelelctric Ceramics

WANG Yi; CHU Wuyang; SU Yanjing; GAO Kewei; QIAO Lijie

Department of Materials Physics; University of Science Technology Beijing; Beijing 100083

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WANG Yi; CHU Wuyang; SU Yanjing; GAO Kewei; QIAO Lijie. Enhancing Role of Stress on Electric Field Induced Delayed Fracture of a PZT--5 Ferroelelctric Ceramics. Acta Metall Sin, 2004, 40(6): 585-.

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Abstract The effect of applied stress intensity factor on the electric field induced delayed fracture of PZT 5 ferroelectric ceramics in silicon oil, has been investigated using single edge notched specimens poled along the longitudinal direction. The results show that the critical electric field for instant fracture in silicon oil decreases linearly with increasing the applied stress intensity factor. The threshold electric field for electric field induced delayed fracture in silicon oil decreases linearly with increasing the applied stress intensity factor. The results indicate that there exists a coupling action between stress, electric field and environment on the delayed fracture of the ferroelectric ceramics.

Key words: PZT ceramics stress electric field induced instant fracture

Received: 17 June 2003

ZTFLH:

TG111.91

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	WANG Yi
	CHU Wuyang
	SU Yanjing
	GAO Kewei
	QIAO Lijie

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2004/V40/I6/585

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