Low‐temperature sintering and enhanced piezoelectric properties of random and textured PIN–PMN–PT ceramics with Li2CO3
Low‐temperature sintering and enhanced piezoelectric properties of random and textured PIN–PMN–PT ceramics with Li2CO3
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DOI：
10.1111/jace.14657
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发表时间：
2017-03
影响因子：
3.9
通讯作者：
Dandan Wei;Hong Wang
中科院分区：
文献类型：
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作者：
Dandan Wei;Hong Wang
以Li 2CO 3为烧结助剂，在950°C的低温下成功合成了36 PIN-30 PMN-34 PT无规织构压电陶瓷。系统研究了Li 2CO 3对36 PIN-30 PMN-34 PT三元体系微结构、介电、铁电和压电性能的影响。结果表明，烧结助剂的加入使试样的晶粒尺寸增大。当Li 2CO 3添加量为0.5wt%时，样品的压电常数d33为450 pC/N，平面机电耦合系数kp为49%，峰值介电常数emax为25612，反射极化强度Pr为36.3 μC/cm 2。此外，在0.5wt%Li2CO3添加的低温烧结织构样品表现出较高的压电常数d33为560 pC/N。这些结果表明，低温烧结的36 PIN-30 PMN-34 PT压电陶瓷是非常有前途的候选人的多层压电应用。
Low-temperature sintered random and textured 36PIN–30PMN–34PT piezoelectric ceramics were successfully synthesized at a temperature as low as 950°C using Li2CO3 as sintering aids. The effects of Li2CO3 addition on microstructure, dielectric, ferroelectric, and piezoelectric properties in 36PIN–30PMN–34PT ternary system were systematically investigated. The results showed that the grain size of the specimens increased with the addition of sintering aids. The optimum properties for the random samples were obtained at 0.5 wt% Li2CO3 addition, with piezoelectric constant d33 of 450 pC/N, planar electromechanical coupling coefficient kp of 49%, peak permittivity emax of 25 612, remanent polarization Pr of 36.3 μC/cm2. Moreover, the low-temperature-sintered textured samples at 0.5 wt% Li2CO3 addition exhibited a higher piezoelectric constant d33 of 560 pC/N. These results indicated that the low-temperature-sintered 36PIN–30PMN–34PT piezoelectric ceramics were very promising candidates for the multilayer piezoelectric applications.