Poling piezoelectric (K,Na,Li)NbO3-polydimethylsiloxane composites

被引：10

作者：

Deutz, D. B. ^{[1
]}

Mascarenhas, N. T. ^{[1
]}

van der Zwaag, S. ^{[1
]}

Groen, W. A. ^{[1
,2
]}

机构：

[1] Delft Univ Technol, Novel Aerosp Mat Fac Aerosp Engn, Delft, Netherlands

[2] TNO, Holst Ctr, Eindhoven, Netherlands

来源：

FERROELECTRICS | 2017年 / 515卷 / 01期

关键词：

Piezoelectric composites; dielectrophoresis; poling; LEAD-FREE PIEZOCERAMICS; ELECTRICAL-PROPERTIES; PHASE-TRANSITIONS; SOLID-SOLUTIONS; CERAMICS; NA0.5BI0.5TIO3; TEMPERATURE; TITANATE; K0.5BI0.5TIO3; ACTUATORS;

D O I：

10.1080/00150193.2017.1360110

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Composites of aligned (K,Na,Li)NbO3 (KNLN) piezoceramic particles in a PDMS polymer matrix are presented as promising materials for flexible sensors and energy harvesters. Their ease of processing is matched with a relatively high damage tolerance and piezoelectric performance at low dielectric loss. To maximize piezoelectric performance, the effective poling conditions for dielectrophoretically structured KNLN-PDMS composites are studied, and compared with random composites. Effective poling is identified at 7.5 kV/mm, for 6 min at 150 degrees C in structured composites. The structured composites demonstrate improved piezoelectric performance, with respect to random composites, while retaining the low stiffness of the PDMS polymer matrix.

引用

页码：68 / 74

页数：7

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