钛酸锶钡粉体制备方法研究进展

Progress in preparation of (Ba,Sr)TiO_3 powders

钛酸锶钡作为一种电子工业专用化学品广泛用于电子陶瓷行业,主要用作敏感元器件、压电陶瓷和高压电容器陶 瓷的粉体材料。综述了钛酸锶钡粉体制备的各种方法。认为液相法制备的粉体因具有纯度高,成分均匀,粒径小等特点而 成为制备粉体的主要方法,其中溶胶-凝胶法制备粉体粒径均匀,烧成温度低;还有化学液相共沉淀法,化学液相均匀沉 淀法制备的粉体纯度高,微细,大大提高产品质量和成品率,能满足电子陶瓷工业发展的要求。

（Sr,Ba）TiO3 as a special chemicals of electronics industry is useful to manufacture electron ceramic, and mainly used as powder material of manufacturing sensitivity components, piezoelectric ceramic and high-voltage ceramic capacitors. In this paper, the different methods for synthesising（Sr,Ba）TiO3 powder are presented, of which liquid methods are promising to produce high purity honogeneous uhrafine powders and become main preparation methods. The powder prepared by sol-gel method has low sintering temperature and uniform grain size. Chemical liquid coprecipitation, and chemical gas and liquid uniformity precipitation can produce high purity ultra-fine powders which greatly enhance product quality and finished product rate. Therefore, the two methods can meet the requirement of electronics ceramic industry development.