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采用不同固相合成法对钙钛矿型Ｐｂ（Ｚｎ１／３Ｎｂ２／３）０．８Ｔｉ０．２陶瓷材料的合成过程进行了研究。ＸＤＲ结果表明，相同合成条件下，不同合成方法得到的陶瓷粉末钙钛矿含量不同，其中，传统固相合成法（ＰｂＯ＋ ＺｎＯ＋ Ｎｂ２Ｏ５＋ ＴｉＯ２）钙钛矿得率最低，简单先驱体合成法（ＰｂＯ＋ ＺＮ＋ ＴｉＯ２）钙钛矿得率较高，复合先驱体合成法（ＰｂＯ＋ ＺＮＴ）钙钛矿得率最高。先驱体合成法具有抑制Ｂ位复合钙钛矿固相合成过程中焦绿石相形成的作用。采用复合先驱体合成法以少量钛酸钡作为晶型稳定剂采用适当的合成工艺可以得到钙钛矿纯度大于９８％ Ｐｂ［（Ｚｎ１／３Ｎｂ２／３）０．８Ｔｉ０．２］Ｏ３ 陶瓷粉末。其具有较宽的烧成温度范围，该陶瓷材料的居里温度为１９０ °Ｃ，具有较高的压电常数，且压电常数随烧结温度的提高而降低。用ＤＴＡ 对各合成方法的配合料进行了研究，发现，差热特征峰峰位与合成过程中焦绿石的出现和钙钛矿的合成温度有很好的对应关系，差热分析可用以对Ｂ位复合钙钛矿合成进行动态研究
The synthesis of perovskite-type Pb (Zn1 / 3Nb2 / 3) 0.8Ti0.2 ceramic was investigated by different solid-phase methods. The results of XDR show that the content of perovskite is different for different synthetic methods under the same synthesis conditions, among which the yield of perovskite is the lowest in the conventional solid-state synthesis method (PbO + ZnO + Nb2O5 + TiO2) TiO2) perovskite has higher yield. The yield of perovskite with the composite precursor method (PbO + ZNT) is the highest. The precursor synthesis method can inhibit the formation of pyrochlore phase during solid phase synthesis of B-site perovskite. Pb (Zn1 / 3Nb2 / 3) 0.8Ti0.2] O3 ceramic powder with perovskite purity greater than 98% can be obtained by a suitable precursor synthesis method with a small amount of barium titanate as crystal stabilizer. It has a wide firing temperature range. The ceramic material has a Curie temperature of 190 ° C and a high piezoelectric constant, and the piezoelectric constant decreases as the sintering temperature increases. DTA was used to study the synthesis materials. It was found that the peak position of differential thermal characteristic had a good correspondence with the appearance of pyrochlore and the synthesis temperature of perovskite in the synthesis process. Differential thermal analysis Synthesis of composite perovskites for dynamic research