摘要: 阐述了水热合成法制备错酸铅纳米陶瓷粉多晶体的原理、工艺过程及其特点，重点分析了水热法制备错酸铅纳米陶瓷粉多晶体的溶解/沉淀和原位合成两种形成机制，以及工艺过程中的影响因素，如反应的温度、碱度、时间、粉体的洗涤、干燥等影响因素。通过分析得出水热法制备错酸铅纳米陶瓷粉多晶体适宜的工艺参数为: 反应温度 150 ~220 C，碱度 DH 7~11.5，反应时间2 ~ 4h,采用冷冻干燥法可获得分散性好、粒度均匀的错酸铅纳米粉体。

关键词:水热合成;错酸铅;纳米陶瓷粉体

Abstract: The principle, techniques and characteristics of hydrothermal synthesis method for preparing lead zirconate titanate (PZT) nanoceramicpowders are reviewed. The twoformation mechanisms including dissolution/precipitation and in-situ of the hydrothermal method, and the effect factors ofthe hydrothermal technology, such as temperature, basicity, time, washingand drying methods, are analysed. Fitting technical parameters of preparingPZT nanoceramic powders by hydrothermal synthesis method are pointedout: reaction temperature is 150 ~ 220 C ; basicity is pH 7 ~ 11. 5; time is2 ~4 h; PZT nanoceramic powders with better disperse and symmetrical granularity are obtained using freezing drying methods.

Keywords: hydrothermal synthesis; lead zirconate titanate; nanoceramicpowder