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采用溶胶-凝胶技术合成了Pb(Zr_(0.95)Ti_(0.05))O_3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 (Zr_ (0.95) Ti_ (0.05)) O_3 nanopowders were synthesized by sol-gel technique and the effect of calcination temperature on the phase stability of PZT (95/5) perovskite was investigated. According to the experimental results of TGA-DSC, the calcination temperature range of dry gel powder is 550 ~ 750 ℃. XRD results show that with the increase of calcination temperature, the strength of the main crystalline phase of the powder gradually increases, and the peak height of the impurity phase gradually decreases until it disappears. When calcined at 750 ° C, the powder structure is a single perovskite phase. SEM observation showed that with the calcination temperature increases, the size of the synthesized powder becomes smaller and more uniform. The average particle size of a single perovskite powder was 100 nm when calcined at 750 ° C.