以乙酸铅、丙酸锌、五乙氧基铌、四丙氧基锆和四正丁氧基钛为原料,用溶胶-凝胶法制备了锌铌酸铅-锆钛酸铅(PZN-PZT)凝胶纤维.该纤维经热解、烧结后成为直径约25μm的陶瓷纤维.陶瓷纤维的表面和断面形貌的电子扫描图像显示:该陶瓷纤维均匀致密,呈圆柱形.X射线分析表明:烧结温度影响陶瓷的晶相纯度.当烧结温度高于1250℃时,该陶瓷及陶瓷纤维呈现纯净的钙钛矿晶相.阿基米德法测得陶瓷和陶瓷纤维的密度分别为7.70×10akg/m3和7.80×103kg/m3.对陶瓷含量为63%的PZN-PZT陶瓷纤维/环氧树脂1-3复合材料压电片,测得其机电转换常数kt、压电常数d33和相对介电常数ε分别为:0.65、403pC/N和1300.以溶胶-凝胶法制备的超细粉体为原料烧结成的PZN-PZT陶瓷,其κt、daa和ε分别为0.48、600pC/N和2627.
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