选择硝酸钡、乙酸钡、碳酸钡、氢氧化钡与二氧化钛作原料,利用熔盐法,在不同温度,不同保温时间下煅烧制备高纯度的钛酸钡纳米晶.采用XRD、SEM对样品进行表征的基础上,通过模拟初步研究了不同反应原料对钛酸钡晶体合成动力学的影响.结果表明:各组反应物均符合JMAK模型和纯界面模型,说明这两个模型是熔盐法制备钛酸钡的生长动力学的通用模型.此外,硝酸钡、乙酸钡两组还符合自由形核、快速生长模型和收缩球面界面模型,而碳酸钡和氢氧化钡两组则不符合,这可能和反应物分解温度有关,不同的分解温度会影响动力学过程.
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