摘要
讨论了串联２－２型压电复合材料的介电损耗ｔａｎ δ、介电击穿Ｅｂ等介电特性。通过测试复合材料的谐振频率ｆｒ和反谐振频率ｆａ，计算出了２－２型复合材料的压电常数ｄ３１、ｄｈ，ｇｈ以及优值ａｄｈｇｈ并讨论了它们的变化规律。文章对压电常数作了数学模拟，实验结果表明：在压电陶瓷（ＰＺＴ）体积含量较高时，实验值与计算值比较吻合。
Dielectric loss tan δ,and dielectric breakdown Eb of 2-2 piezoelctric composites with series model are discussed. Piezoelectric constant d31,dh,gh and figure of merit dhgh of 2-2 composites are calculated through resonance frequency fr and anti-resonance frequency fa of composites. The results showed that experimental values have a good agreement with calculated values at high PZT volume content.
出处
《压电与声光》
CSCD
北大核心
2000年第4期262-265,共4页
Piezoelectrics & Acoustooptics
关键词
压电复合材料
联模式
介电性
压电性
piezocompsites
series model
dielectric properties
piezoelectric properties
