以二氧化钛纳米管阵列为模版,用水热法合成了钛酸钡纳米管阵列薄膜.讨论了水热温度、水热时间、碱的浓度对其生长形貌的影响.用X射线衍射仪、扫描电子显微镜表征了其晶体结构及微观形貌;用热重-差示扫描量热仪测定了材料的热学性能;用宽频介电阻抗谱仪测试了样品的介电性能.结果表明,在低至100℃水热温度下反应6h即可制得单一相的钛酸钡纳米管阵列薄膜.水热时间的延长和较高的水热反应温度有助于提高样品的介电常数.氢氧化钾的加入抑制了钡离子向纳米管阵列中扩散而促使表面颗粒的结晶长大.纳米管的结构转变温度在700-1100℃之间,至1280℃左右时发生相变转变.
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