采用溶胶-凝胶技术合成了Pb(Zr0.95Ti0.05)O3纳米粉,并探讨了煅烧温度对PZT(95/5)钙钛矿相结构稳定性的影响.据TGA-DSC的实验结果,确定了干凝胶粉的煅烧温度范围为550～750℃.XRD实验结果表明,随着煅烧温度的升高,粉体主晶相的强度逐渐升高,杂质相的峰高逐渐减弱直至消失.当在750℃煅烧时,粉体结构为单一的钙钛矿相.利用SEM观察发现,随着煅烧温度的升高,所合成的粉体粒度逐渐变小、均匀.当在750℃煅烧时,单一钙钛矿结构的粉体的平均粒度为100 nm.
Pb(Zr0.95Ti0.05)O3 (PZT95/5 for short) anti-ferroelectric nano-powder was prepared by a sol-gel method,and the effects of calcination temperature on the structural stability of perovskite for PZT(95/5) was investigated.Based on the results of TGA-DSC,the calcination temperature range of dried gel was identified as from 550 ℃ to 750 ℃.XRD results illustrate that the peak intensity of the main crystalline phase increases gradually,while that of the impurity phase decreases,eventually disappears with the increasing of the calcination temperature T1,When calcined at 750 ℃,single phase of perovskite for PZT (piezoelectric transition) (95/5) is formed.SEM observation shows that with the increasing of T1,the powder synthesized becomes finer and more uniform progressively.And when calcined at 750 ℃,the average particle size of PZT(95/5) nano-powder is about 100 nm.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%