摘要
采用钛酸丁酯和醋酸铅作为原料，通过溶胶－凝胶（Ｓｏｌ－Ｇｅｌ）方法合成了纳米级ＰｂＴｉＯ３超细粉末。实验结果表明：采用Ｓｏｌ－Ｇｅｌｌ方法可以制得纯度为含ＰｂＴｉＯ３，９９．６７ｗｔ％，平均粒径为６０ｎｍ的高纯、超细、粒径分布范围窄的ＰｂＴｉＯ３粉末。ＰｂＴｉＯ４干凝胶在４００℃下热处理２ｈ后，可以得到结晶程度很高的纳米级ＰｂＴｉＯ３超细粉末。同时通过对醋酸铅（Ｐｂ（Ａｃ）２·３Ｈ２Ｏ）脱水方法的探讨，得出在１９０℃下加热数小时可以有效地脱去醋酸铅中的结晶水。
In this work tetrabutyl titanate and lead acetate are used as the raw materials to preparenanometer ultrafine lead titanate powders through Sol-Gel process. The results indicate that powderswith high purity (PbTio_3 concentration 99. 67wt% ), ultrafine particle size (average particle size 60nm)and narrow size distribution can be obtained via Sol-Gel process. The dried PbTiO_3 gel is highlycrystalized after heat treatment at 400℃ for 2h. It is also found that Pb(Ac)2 . 3H2O can be effectively dehydrated at 190℃ for several h.
基金
中科院高性能陶瓷与超微结构开放实验室资助
