以钛酸四丁酯、五水硝酸铋和无水乙酸钠为原料,用溶胶-凝胶法制备Bi0.5Na0.5TiO3(BNT)细粉,通过XRD和TEM表征粉体的结构和形貌.采用正交试验法,分析了反应温度、溶液pH值、加水量对最终BNT粉体粒径的影响.结果表明,各因素对粉体晶粒尺寸影响的显著性水平由大到小依次为加水量＞溶液pH值＞反应温度;反应温度为60℃、溶液pH值为4.5、加水量为7.2mL的条件下制得粉体的平均晶粒尺寸约为200～350nm.
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