(Reactive) Templated Grain Growth of Textured Sodium Bismuth Titanate (Na1/2Bi1/2TiO3-BaTiO3) Ceramics—I Processing
(Reactive) Templated Grain Growth of Textured Sodium Bismuth Titanate (Na1/2Bi1/2TiO3-BaTiO3) Ceramics—I Processing
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DOI：
10.1023/b:jecr.0000026375.50590.81
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发表时间：
2003-12
影响因子：
1.7
通讯作者：
H. Yilmaz;G. Messing;S. Trolier-McKinstry
中科院分区：
文献类型：
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作者：
H. Yilmaz;G. Messing;S. Trolier-McKinstry
采用<100>模板晶粒生长法（TGG）和反应模板晶粒生长法（RTGG）制备了具有pc（其中pc表示赝立方钙钛矿晶胞）取向的织构（Na_（1/2）Bi_（1/2））TiO_3-BaTiO_3（5.5mol%BaTiO_3）陶瓷。在TGG的情况下，将熔融盐合成的SrTiO 3片晶与（Na 12 Bi 12）TiO 3 - 5.5mol%BaTiO 3粉末一起流延，并在1200°C下烧结长达12 h。在RTGG方法中，将Bi 4 Ti 3 O 12（BiT）片晶与Na 2CO 3、Bi 2 O3、TiO 2和BaCO 3粉末混合物一起流延并反应烧结。使用SrTiO 3模板的TGG方法导致沿[001]沿着>90%的纹理，而使用BiT模板的RTGG方法导致80%的纹理。用X射线摇摆曲线测量的晶粒取向分布沿着织构方向，半高宽为1.8 °，织构率为80%。
Textured (Na1/2Bi1/2)TiO3-BaTiO3(5.5 mol% BaTiO3) ceramics with <100>pc(where pc denotes the pseudocubic perovskite cell) orientation were fabricated by Templated Grain Growth (TGG) and Reactive Templated Grain Growth (RTGG) using anisotropically shaped template particles. In the case of TGG, molten salt synthesized SrTiO3platelets were tape cast with a (Na1/2Bi1/2)TiO3-5.5 mol%BaTiO3powder and sintered at 1200°C for up to 12 h. In the RTGG approach, Bi4Ti3O12(BiT) platelets were tape cast with a Na2CO3, Bi2O3, TiO2, and BaCO3powder mixture and reactively sintered. The TGG approach using SrTiO3templates resulted in >90% texture along [001] whereas the RTGG approach using BiT templates resulted in 80% texture. The grain orientation distribution along the textured direction, as measured by X-ray rocking curve, showed a full width at half maximum of ∼8° and a texture fraction of 80%.