The temperature stabilizer doped PLZT-PZN-PNN-PSN piezoelectric ceramics were prepared by solid state sintering method.The effect of doping amount of different temperature stabilizer on the density and piezoelectric properties of the components was studied by XRD.The components were equipped with a security alarm and the performance of the alarm was analyzed.The results showed that the density of doping components increased at first and then decreased at x=0.02,and the samples with different contents of temperature stabilizers showed a single ABO3 perovskite structure.With the increase of the content of the temperature stabilizer,the piezoelectric and dielectric properties first increase and then decrease,and the performance is the best at x=0.02,that is,the relative dielectric constant(εr):3408,the piezoelectric constant(d33):611pC/N,the plane electromechanical coupling coefficient(Kp):0.78.The sound pressure of the alarm made of the optimum composition is more than 85 dB under high and low temperature environment,which meets the requirement of the market.
关键词
PLZT-PZN-PNN-PSN压电陶瓷/温度稳定剂/安防报警器/压电和介电性能
Key words
PLZT-PZN-PNN-PSN piezoelectric ceramics/temperature stabilizer/security alarm/piezoelectric and dielectric properties
维普
万方数据