熔盐法合成片状SrBi_4Ti_4O_(15)粉体

Plate-like SrBi_4Ti_4O_(15) Powder Synthesized by Molten Salt Method

采用NaCl-KCl熔盐法合成了生长各向异性的片状SrBi4Ti4O15粉体，用XRD分析了粉体相的结构，用SEM观察了粉体的微观形貌，讨论了不同预烧温度对合成物结构和微观形貌的影响。与固相法相比，熔盐法合成的粉体具有（001）择优生长的优点。在850—1050℃之间，合成粉体的片状结构趋于明显，粉体生长各向异性随温度的升高呈现出先增加后减小的趋势，各向异性明显的SrBi4Ti4O15粉体的最佳合成温度为900-1000℃。

Plate-like SrBi4Ti4O15 powder with anisotropy was synthesized synthesis method （MSM）. The phases of the reaction products and the by NaCI-KCI molten salt microstructures at different calcined temperatures were detected by X-ray powder diffraction （XRD） and scanning electron microscope （SEM）, respectively. The effects of calcined temperatures on microstructure and morphology of SrBi4Ti4O15 powder were investigated. Comparing to conventional solid phase process （CS） , the powder synthesized by MSM was oriented at （001） grain plane. During 850-1050℃, the flake structure of powder was much more distinct and the level of anisotropy increasing first, and then decreasing with the temperature increased. The best calcined temperatures of plated-like SrBi4Ti4015 powder with anisotropy was from 900 to 1000℃.