Improving piezoelectric properties of Pb(Ni, Nb)O-3-Pb(Hf, Ti)O-3 ceramics by LiF addition
Improving piezoelectric properties of Pb(Ni, Nb)O-3-Pb(Hf, Ti)O-3 ceramics by LiF addition
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添加LiF改善Pb(Ni, Nb)O-3-Pb(Hf, Ti)O-3陶瓷的压电性能
DOI：
10.1016/j.ceramint.2017.12.094
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发表时间：
2018
影响因子：
5.2
通讯作者：
Feng Yujun
中科院分区：
文献类型：
--
作者：
Yan Yangxi;Liu Zhihong;Li Zhimin;Zhang Maolin;Zhang Dongyan;Feng Yujun
制备了添加LiF的0.49Pb（Ni 1/3 Nb 2/3）O3-0.51Pb（Hf0.3Ti0.7）O3（PNN-PHT）压电陶瓷，研究了LiF的添加量对其压电性能的影响。结果表明，LiF促进了PNN-PHT陶瓷中纯钙钛矿相的形成，促进了PNN-PHT陶瓷的致密化。在1100 °C的烧结温度下制备的LiF掺杂量为4at%的样品具有较好的压电性能，d33= 957 pC/N，εr= 7113。讨论了LiF的加入对材料性能改善的机理。结果表明，PNN-PHT陶瓷是一个很好的候选人，铅基压电材料应用于大位移驱动器。
0.49Pb(Ni1/3Nb2/3)O3-0.51Pb(Hf0.3Ti0.7)O3(PNN-PHT) piezoelectric ceramics added with LiF were prepared, and the effect of the LiF addition on their piezoelectric properties was investigated. Results showed that LiF promoted the formation of pure perovskite phase and the densification of the PNN-PHT ceramics. The better piezoelectric properties, i.e. d33= 957 pC/N and εr= 7113, were obtained for the 4 at% LiF added sample which was prepared at a sintering temperature as low as 1100 °C. The mechanism of the improved properties by LiF addition was discussed. Results suggest the PNN-PHT ceramic to be an excellent candidate for lead-based piezoelectric materials applied in large displacement actuator.