以钛酸四丁酯Ti(OC4H9)4和五水硝酸铋Bi(NO3)3·5H2O为原料,NaOH为矿化剂,通过水热法制备钛酸铋钠(Na0.5Bi0.5TiO3)粉体.通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)对反应制备的粉体进行物相分析.结果表明,反应温度、反应时间及矿化剂浓度均是影响钛酸铋钠粉体制备的关键因素.利用JMA方程对其进行动力学计算分析,结果表明,在反应温度为120～ 180℃时,NBT颗粒的Avrami指数n随温度的升高而减小,而反应速率k则相反,反应活化能Ea为50.14 kJ·mol-1.
参考文献
| [1] | 马晓,薛丽红,严有为.Na0.5Bi0.5TiO3纳米纤维的制备及形成机理研究[J].无机材料学报,2011(12):1251-1255. |
| [2] | Ye-Jing Dai;Shujun Zhang;Thomas R. Shrout .Piezoelectric and Ferroelectric Properties of Li-Doped (Bi_(0.5)Na_(o.5))TiO_3-(Bi_(0.5)K_(0.5))TiO_3-BaTiO_3 Lead-Free Piezoelectric Ceramics[J].Journal of the American Ceramic Society,2010(4):1108-1113. |
| [3] | 刘冰 .BNT基无铅压电陶瓷材料的制备与电性能的研究[D].陕西师范大学,2007. |
| [4] | 赵明磊,王春雷,钟维烈,王矜奉,陈洪存.溶胶-凝胶法制备Bi0.5Na0.5TiO3陶瓷及其电学特性[J].物理学报,2003(01):229-232. |
| [5] | Liu JB;Wang H;Hou YD;Zhu MK;Yan H;Yoshimura M .Low-temperature preparation of Na0.5Bi0.5TiO3 nanowhiskers by a sol-gel-hydrothermal method[J].Nanotechnology,2004(7):777-780. |
| [6] | 廖润华,李月明,张玉平,江向平.溶胶-凝胶法合成（Na0.5Bi0.5）TiO3微粉[J].硅酸盐通报,2006(06):72-75,158. |
| [7] | Jing XZ.;Li YX.;Yin QG. .Hydrothermal synthesis of Na0.5Bi0.5TiO3 fine powders[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2003(1/3):506-510. |
| [8] | Tonglei Lu;Jinhui Dai;Jintao Tian .Synthesis of Na_(0.5)Bi_(0.5)TiO_3 powders through hydrothermal method[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2010(1/2):232-235. |
| [9] | Yoshimura M;Byrappa K .Hydrothermal processing of materials: past, present and future[J].Journal of Materials Science,2008(7):2085-2103. |
| [10] | Yonggang Wang;Gang Xu;Linlin Yang .Hydrothermal synthesis and characterization of Na_(0.5)Bi_(0.5)TiO_3 microcubes[J].CERAMICS INTERNATIONAL,2009(4):1657-1659. |
| [11] | Beale AM.;Sankar G. .In situ study of the formation of crystalline bismuth molybdate materials under hydrothermal conditions[J].Chemistry of Materials,2003(1):146-153. |
| [12] | Croker, D;Loan, M;Hodnett, BK .Kinetics and Mechanisms of the Hydrothermal Crystallization of Calcium Titanate Species[J].Crystal growth & design,2009(5):2207-2213. |
| [13] | Ying Zhou;Elena Antonova;Wolfgang Bensch .In situ X-ray diffraction study of the hydrothermal crystallization of hierarchical Bi2WO6 nanostructures[J].Nanoscale,2010(11):2412-2417. |
| [14] | 展红全,江向平,李小红,罗志云,陈超,李月明.钛酸钡纳米颗粒聚集球的形成机理[J].物理化学学报,2011(12):2927-2932. |
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