Effect of the piezoelectric ceramic filler dielectric constant on the piezoelectric properties of PZT-epoxy composites

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• 作者：Jibran Khaliq^a ; ^{j.khaliq@tudelft.nl} ; Daniella Bayle Deutz^a ; Jesus Alfonso Caraveo Frescas^b ; Peter Vollenberg^c ; Theo Hoeks^d ; Sybrand van der Zwaag^a ; Pim Groen^a ; ^e
• 关键词：Piezoelectrics ; Structured composites ; Aging rate ; Hard/Soft PZT
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：43
• 期：2
• 页码：2774-2779
• 全文大小：1382 K
• 卷排序：43

文摘

Piezoelectric composites made from soft and hard lead zirconium titanate (PZT) particles as filler and an epoxy as the matrix were prepared by dielectrophoresis and studied for their piezoelectric properties. It was found that the dielectric constant of the piezoelectric filler plays a significant role in determining the final piezoelectric properties of the composites. Composites with lower dielectric constant for the PZT filler material showed better piezoelectric properties compared to the composites with high dielectric constant filler. This can be ascribed to a more efficient poling of the piezoelectric filler particles. The aging behaviour of these composites was compared to that reported for monolithic ceramics.