화학공학소재연구정보센터
Journal of the American Ceramic Society, Vol.91, No.3, 910-913, 2008
A novel hybrid method of sol-gel and ultrasonic atomization synthesis and piezoelectric properties of SrBi4Ti4O15 ceramics
SrBi4Ti4O15(SBTi) powders were synthesized by a novel hybrid method of sol-gel and ultrasonic atomization. TiO2 particle was used as a starting material to replace other expensive soluble titanium salts. X-ray diffraction results showed that the pure-phase SBTi powders were obtained at 700 degrees C for 2 h, which is much lower than the calcination temperature (800 degrees-850 degrees C) required in solid-state reactions. The ceramics sintered at 1100 degrees C for 1 h exhibited 94.5% of relative density and a piezoelectric coefficient of 21 pC/N. The results showed that this hybrid method could lead to an attractive method for the industrial fabrication of SBTi materials.