Effects of sintering behavior on piezoelectric properties of porous PZT ceramics

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• 作者：Wei Liu ; Jing Xu ; Ruifang Lv ; Yanzhong Wang ; Hong Xu ; Jinlong Yang
• 关键词：A. Sintering ; C. Dielectric properties ; C. Piezoelectric properties ; D. PZT
• 刊名：Ceramics International
• 出版年：January, 2014
• 年：2014
• 卷：40
• 期：1_part_PB
• 页码：2005-2010
• 全文大小：1280 K

文摘

Porous lead zirconate titanate (PZT) ceramics were fabricated by the gel-casting process of particle-stabilized wet foams and sintered at different temperatures. The bulk density and grain size of porous PZT ceramics increased with the increase of sintering temperature from 1150 to 1250 掳C, which exerted remarkable influence on the value of relative permittivity (蔚_r) and piezoelectric strain coefficient (d₃₁ and d₃₃). The relationship between microstructure and electric properties was explained by the space-charge theory reasonably. Under the joint effects of bulk density and grain size, the value of d_h and g_h decreased with the increase of sintering temperature, resulting in the decrease of hydrostatic figure of merit (HFOM) values from 12633 to 3427脳10^-15 Pa^鈭?.