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以硝酸钙、硝酸铜、钛酸四丁酯、冰乙酸和无水乙醇为原料,采用溶胶-凝胶自蔓延燃烧反应成功地制备了平均粒径为60~80nm的CaCu3Ti4O12纳米粉体.采用XRD、TEM和IR对纳米粉体的结构、形貌和光谱特性进行了分析和表征,并借助TG-DSC研究了干凝胶的自蔓延特性和晶化过程.采用传统烧结工艺制备了陶瓷,测得其在室温、lkHz时的介电常数为6×104.

参考文献

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[9] 杨昌辉,周小莉,徐刚,韩高荣,翁文剑,杜丕一.溶胶-凝胶法制备巨介电常数材料CaCu3Ti4O12[J].硅酸盐学报,2006(06):753-756.
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[11] 肖顺华,姜卫粉,李隆玉,李新建.铜铁氧体纳米晶的溶胶-凝胶自蔓延燃烧法合成和表征[J].功能材料,2007(10):1720-1722.
[12] 齐西伟,周济,张迎春,岳振星,李龙土,桂治轮.溶胶凝胶白燃烧法合成LaFeO3纳米晶[J].黑龙江科技学院学报,2001(04):1-3.
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