Effect of nano-sized TiO2 powder on Ag-electrode in piezoelectric multilayer devices
- 108 Downloads
The objective of this study is to present sintering shrinkage behavior of Ag-Pd electrode powders with TiO2 nano-particle addition and the matching characteristics to a piezoelectric ceramics, Pb(Zr,Ti)O3. The densification of the nanoparticle TiO2-added electrode paste followed the TiO2 solid state diffusion-controlled mechanism upon sintering process. Reaction between ceramic and electrode layers with the TiO2 nano-particle powder allows internal stress to be reduced and mechanical bonding strength to be increased. High adhesive strength and good electrical conductivity of more than 104/Ω cm could be obtained in the multilayer ferroelectric structure. In order to understand the effectiveness of the nano-TiO2 doped electrode for multilayer device, the multilayer ceramic actuators containing Ag-based electrode without and with nano-sized TiO2 powder were fabricated and evaluated each other. Both the samples exhibited similar piezoelectric and dielectric properties.
KeywordsNano-sized TiO2 particle Ag-Pd electrode Sintering Adhesion Electric conductivity
Unable to display preview. Download preview PDF.
- 1.W. Wesing, H. Wahl, and M. Schnoller, Ferroelectrics, 87, 271 (1998).Google Scholar
- 6.J.H. Jean and C.R. Chany, J. Mater. Res., 12, 2743 (1997).Google Scholar
- 9.S.J. Lee and W.M. Kriven, J. Mater. Res., 12, 411 (1997).Google Scholar
- 12.J.-H. Jean and T.K. Gupta, J. Mater. Res., 7, 3342 (1992).Google Scholar