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以金属醇盐和无机盐为原料,用溶胶-凝胶法制备合成了粒径小于50nm的纯PbTiO3超细粉,探讨了溶胶-凝胶过程反应机理,并对制备过程中的一些主要因素如pH值、溶液浓度和温度等进行了讨论,采用热分析、X-Ray衍射分析和TEM等测试手段对PbTiO3超细粉进行了分析。
In this paper, pure PbTiO3 powders with particle size of less than 50nm were prepared by sol-gel method using metal alkoxides and inorganic salts as raw materials. The reaction mechanism of sol-gel process was discussed. Some main factors such as pH, solution concentration and temperature were discussed. The PbTiO3 ultrafine powder was analyzed by means of thermal analysis, X-ray diffraction analysis and TEM.