Formation mechanism of A-site complex perovskite (Ba, Sr)TiO3 microplatelets
Formation mechanism of A-site complex perovskite (Ba, Sr)TiO3 microplatelets
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DOI：
10.1016/j.ceramint.2018.10.089
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发表时间：
2019-02
影响因子：
5.2
通讯作者：
Dandan Wei;Wenxuan Li
中科院分区：
文献类型：
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作者：
Dandan Wei;Wenxuan Li
采用熔盐合成（MSS）和局部化学微晶转化（TMC）技术成功合成了高长径比的A位复合钙钛矿（Ba，Sr）TiO 3微晶片。在合成过程中，以MSS法制备的Bi 4 Ti 3 O 12（BiT）片晶为前驱体，以SrCO 3-BaCO 3混合粉末为反应物，在1000 °C的NaCl助熔剂中合成Bi 4 Ti 3 O 12（BiT）。研究了BiT-SrCO 3-BaCO 3摩尔比对产物物相和显微结构的影响。合成的（Ba0.5Sr0.5）TiO 3片晶将是使用模板晶粒生长（TGG）法制备高度织构陶瓷的有效模板。
A-site complex perovskite (Ba, Sr)TiO3microplatelets with high aspect ratio were synthesized successfully by molten salt synthesis (MSS) and topochemical microcrystal conversion(TMC) technique. In the process of synthesis, Bi4Ti3O12(BiT) platelets firstly prepared by MSS method were used as precursor and powdered SrCO3-BaCO3mixture were employed as reactants in NaCl flux at 1000 °C. The effects of BiT-to-SrCO3-to-BaCO3molar ratios on phase and microstructure of the resultant products were investigated. The synthetic (Ba0.5Sr0.5)TiO3platelets would be effective templates for producing highly textured ceramics using the templated grain growth(TGG) method.