【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。更多还原

【Abstract】 Sr₀.05 Ba₀.95 TiO₃ is a kind of material of lower T_c PTC. The methods,by which Sr 0.05 Ba 0.95 TiO₃ 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 Sr 0.05 Ba 0.95 TiO₃ powders are discussed here. The main tested data of Sr 0.05 Ba 0.95 TiO₃ 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 mol rates of Sr /T and Ba/Ti are 0.0497 and 0.9504;the crystal is tetragonal,and the content of Sr 0.05 Ba 0.95 TiO₃ is 99.86%. The other Sr_xBa 1-x TiO₃ powders can also be fabricated by the method with adjustment of rate of raw materials.更多还原