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科学通报  2011 

提高(K0.5Na0.5)NbO3陶瓷压电性能温度稳定性的新方法

, PP. 788-792

Keywords: 铌酸钾钠,准同型相界,压电,温度稳定性

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Abstract:

分析了(K0.5Na0.5)NbO3(简写为KNN)基陶瓷压电性能温度稳定性差的原因,结合KNN固溶体的相图,提出了解决KNN基陶瓷压电性能温度稳定性差的新方法.为了验证此方法的可行性,设计了0.9(K1-xNax)NbO3-0.06LiNbO3-0.04CaTiO3(简记为KNLN-CaTiO3)陶瓷.系统研究了KNLN-CaTiO3陶瓷的结构和性能.实验结果表明KNLN-CT(x=0.54)陶瓷在宽阔的温度范围(25~320℃)内表现出良好的温度稳定性,在x=0.54处获得了相对较高的压电性能(d33=152pC/N).这个结果证实了我们提出的解决KNN基陶瓷压电性能温度稳定性差的方法是可行的,具有使用价值.

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