Effect of ZnO whisker content on sinterability and fracture behaviour of PZT peizoelectric composites

Jie Yuan; Da Wei Wang; Hai Bo Lin; Quan Liang Zhao; De Qing Zhang; Mao Sheng Cao

doi:10.1016/j.jallcom.2010.05.067

Effect of ZnO whisker content on sinterability and fracture behaviour of PZT peizoelectric composites

Jie Yuan, Da Wei Wang, Hai Bo Lin, Quan Liang Zhao, De Qing Zhang, Mao Sheng Cao^*

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

Zinc oxide whiskers (ZnO_w) reinforced lead zirconate titanate (PZT) piezoelectric composites with high strength and high toughness were fabricated by nonpressure sintering at 1100 °C. Addition of ZnO_w is effective for sinterability and densification of the composites. Incorporating ZnO_w to PZT ceramics contributes to an obvious improvement of the fracture properties. The fracture strength and fracture toughness of the composites incorporating 2 wt.% ZnO_w, compared with the monolithic PZT, are enhanced 46% and 47%, respectively. Improvement of fracture strength is ascribed to the enhancement of the elastic modulus and fracture toughness. Enhancement of fracture toughness is associated with the existence of the observed several mechanisms including crack deflection, whisker bridging, whisker pull-out and rupture due to the intergranular and intragranular whiskers.

Original language	English
Pages (from-to)	123-128
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	504
Issue number	1
DOIs	https://doi.org/10.1016/j.jallcom.2010.05.067
Publication status	Published - 31 Aug 2010

Keywords

Composite materials
Mechanical properties
PZT/ZnO
Sintering

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10.1016/j.jallcom.2010.05.067

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title = "Effect of ZnO whisker content on sinterability and fracture behaviour of PZT peizoelectric composites",

abstract = "Zinc oxide whiskers (ZnOw) reinforced lead zirconate titanate (PZT) piezoelectric composites with high strength and high toughness were fabricated by nonpressure sintering at 1100 °C. Addition of ZnOw is effective for sinterability and densification of the composites. Incorporating ZnOw to PZT ceramics contributes to an obvious improvement of the fracture properties. The fracture strength and fracture toughness of the composites incorporating 2 wt.% ZnOw, compared with the monolithic PZT, are enhanced 46% and 47%, respectively. Improvement of fracture strength is ascribed to the enhancement of the elastic modulus and fracture toughness. Enhancement of fracture toughness is associated with the existence of the observed several mechanisms including crack deflection, whisker bridging, whisker pull-out and rupture due to the intergranular and intragranular whiskers.",

keywords = "Composite materials, Mechanical properties, PZT/ZnO, Sintering",

author = "Jie Yuan and Wang, {Da Wei} and Lin, {Hai Bo} and Zhao, {Quan Liang} and Zhang, {De Qing} and Cao, {Mao Sheng}",

year = "2010",

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doi = "10.1016/j.jallcom.2010.05.067",

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journal = "Journal of Alloys and Compounds",

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T1 - Effect of ZnO whisker content on sinterability and fracture behaviour of PZT peizoelectric composites

AU - Yuan, Jie

AU - Wang, Da Wei

AU - Lin, Hai Bo

AU - Zhao, Quan Liang

AU - Zhang, De Qing

AU - Cao, Mao Sheng

PY - 2010/8/31

Y1 - 2010/8/31

N2 - Zinc oxide whiskers (ZnOw) reinforced lead zirconate titanate (PZT) piezoelectric composites with high strength and high toughness were fabricated by nonpressure sintering at 1100 °C. Addition of ZnOw is effective for sinterability and densification of the composites. Incorporating ZnOw to PZT ceramics contributes to an obvious improvement of the fracture properties. The fracture strength and fracture toughness of the composites incorporating 2 wt.% ZnOw, compared with the monolithic PZT, are enhanced 46% and 47%, respectively. Improvement of fracture strength is ascribed to the enhancement of the elastic modulus and fracture toughness. Enhancement of fracture toughness is associated with the existence of the observed several mechanisms including crack deflection, whisker bridging, whisker pull-out and rupture due to the intergranular and intragranular whiskers.

AB - Zinc oxide whiskers (ZnOw) reinforced lead zirconate titanate (PZT) piezoelectric composites with high strength and high toughness were fabricated by nonpressure sintering at 1100 °C. Addition of ZnOw is effective for sinterability and densification of the composites. Incorporating ZnOw to PZT ceramics contributes to an obvious improvement of the fracture properties. The fracture strength and fracture toughness of the composites incorporating 2 wt.% ZnOw, compared with the monolithic PZT, are enhanced 46% and 47%, respectively. Improvement of fracture strength is ascribed to the enhancement of the elastic modulus and fracture toughness. Enhancement of fracture toughness is associated with the existence of the observed several mechanisms including crack deflection, whisker bridging, whisker pull-out and rupture due to the intergranular and intragranular whiskers.

KW - Composite materials

KW - Mechanical properties

KW - PZT/ZnO

KW - Sintering

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JO - Journal of Alloys and Compounds

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IS - 1

ER -

Effect of ZnO whisker content on sinterability and fracture behaviour of PZT peizoelectric composites

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Keywords

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