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中文摘要：
将柠檬酸法与固相合成法有效结合，制备出钙钛矿结构的（K1/2Na1/2）NbO3（KNN）无铅压电陶瓷．分析表明，利用柠檬酸法合成铌酸钾钠粉体较为适宜的温度为550℃；制备铌酸钾钠无铅压电陶瓷的较好温度为1100℃，其居里温度为415℃，压电常数为58×10^-12C/N．
英文摘要：
In this paper, single perovskite phase （K1/2Na1/2）NbO3 powders were obtained by citrate method. The preferable calcined temperatures for KNN powder and ceramic are 550 and 1100℃ respectively. The Curie temperature of KNN is 415℃, and d33 value is 58×10^-12C/N.
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