以偏钛酸为钛源制备Sr_(0.05)Ba_(0.95)TiO_3电子粉体  

Preparation of Sr_(0.05)Ba_(0.95)TiO_3 Electronic Powders with β-TiO(OH)_2 as the Resource of Element Titanium

作　　者：邓昭平[1] 倪师军[1] 李思平[1] 夏新蕊[1] 王鹏威[1] 

机构地区：[1]成都理工大学材料与化学化工学院,成都610059

出　　处：《材料导报》2006年第9期150-151,160,共3页Materials Reports

基　　金：四川省应用科学基金项目(04JY029-008-2)

摘　　要：Sr0.05Ba0.95Ti O3是一种低居里的PTC材料,探索一种以偏钛酸为钛元素来源,与碳酸钡和碳酸锶直接反应制备Sr0.05Ba0.95Ti O3粉体的新方法并对制备的样品进行性能表征。本工艺所制备Sr0.05Ba0.95Ti O3的平均粒度为0.35μm、粒度分布均匀、形貌为球形、(SrO+BaO)/Ti O2摩尔比为1.0001、Sr/Ti摩尔比和Ba/Ti摩尔比分别为0.0497和0.9504、属四方相的晶体结构、Sr0.05Ba0.95Ti O3主含量为99.86%。通过此工艺的比列调整也能够制备一系列其他的SrxBa1-xTi O3粉体。Sr0.05Ba0.95TiO3 is a kind of material of lower Tc PTC. The methods, by which Sr0.05Ba0.95TiO3 powders are prepared through the direct reaction of β-TiO（OH）2 which is used as the resource of element titanium and BaCO3 and SrCO3, and the properties of the Sr0.05Ba0.95TiO3 powders are discussed here. The main tested data of Sr0.05Ba0.95TiO3 powders prepared by the method are： the mean particle size is 0.35μm ;the distribution of the particles is uniform; the morphology of the particles is nearly global, the mol rate of （SrO＋BaO）/TiO2 is 1. 0001, the tool rates of Sr/T and Ba/Ti are 0. 0497 and 0. 9504;the crystal is tetragonal,and the content of Sr0.05Ba0.95TiO3 is 99.86%. The other SrxBa1-xTiO3 powders can also be fabricated by the method with adjustment of rate of raw materials.

关 键 词：钛酸钡锶 偏钛酸 正温度系数热敏电阻 低温PTC 

分 类 号：TQ621.12[化学工程—精细化工]