Dergiler / Konya Journal of Engineering Sciences / 2017 / Cilt: 5 Sayı: 2
PMN-PT-PMS SERAMİKLERİNDE SİNTERLEME SICAKLIĞI ETKİSİYLE YAPISAL VE ELEKTRİKSEL ÖZELLİKLERİN OPTİMİZASYONU
- Sayfa
- 144–152
- DOI
- —
Özet
PMS [Pb(Mn1/3Sb2/3)O3] ile katkılanmış PMN-PT [Pb(Mg1/3Nb2/3)O3-PbTiO3] üçlü piezoelektrik
Abstract
Pseudo-ternary piezoelectric ceramics of PMN-PT [Pb(Mg1/3Nb2/3)O3-PbTiO3] compositionmodified with PMS [Pb(Mn1/3Sb2/3)O3] were produced by solid-state sintering method using differenttemperatures in a range of 1100-1250 °C. The effect of sintering temperature on the crystal phases,microstructure and electrical properties were systematically investigated. Microstructural andcompositional analyses have been carried out using scanning electron microscope (SEM) and X-raydiffraction (XRD). Besides, electrical characterization was performed using an inductance-capacitanceresistance(LCR) meter, impedance analyzer and a Berlincourt d33-piezometer. XRD and SEM resultsindicated that the sintering temperature was effective on the formation of a homogeneousmicrostructure and a pure perovskite structure. Densification during sintering could not be completedand pure perovskite structure was not o tained at 1150 °C and lower sintering temperatures.Furthermore, sintering at temperatures higher than 1200 °C resulted in heterogeneous microstructure.The high dielectric and piezoelectric response of PMN-PT-PMS ceramics is considered to be a result oftheir high densities and homogeneous microstructure obtained via proper sintering condition. Theresults showed that the ceramic samples sintered at 1175 °C for 2 h possessed the optimum properties(d33=265 pC/N, KT=4745, kp=0.417, tanδ=2.5%, Qm=222).