Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10625370 | Ceramics International | 2014 | 8 Pages |
Abstract
This paper presents a novel die-pressing technique for the fabrication of 1-3 piezoceramic/polymer composites. Piezoceramic (Ba0.95Pb0.05)(Ti0.99Co0.01)O3 (BT) powder having particle size ~0.4 μm was synthesized by a solid state reaction method. Key properties of sintered and poled BT samples were εr=1100, d33=136 pC/N, g33=14Ã10â3 V m/N and tan δ=0.005. The 1-3 connectivity BT/monothane-A70 samples with variable BT contents (11-31 vol%) were fabricated by a die-pressing technique. The dielectric, elastic and resonant characteristics were investigated by using standard equipments. Results revealed that the composites possess moderate dielectric constant Ér (140-349), higher thickness mode electromechanical coupling coefficient kt (44%) and higher figure of merit FOM (1896-7169 fm2/N) compared to monolithic BT ceramic. The fabricated composites also possess favorable properties such as lower acoustic impedance Z (8-13 Mrayl) and lower elastic stiffness C33D (36-65 GPa) compared to single phase BT ceramic. These results indicate that BT/monothane-A70 composites have the potential to be used as transducer in various applications.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Muhammad Saleem Mirza, Tariq Yasin, Masroor Ikram, Muhammad Nasir Khan, Muhammad Shuaib,