Crystallite structure, microstructure, dielectric, and piezoelectric properties of (Pb1.06−xBax)(Nb0.94Ti0.06)2O6 piezoelectric ceramics prepared using calcined powders with different phases
Crystallite structure, microstructure, dielectric, and piezoelectric properties of (Pb1.06−xBax)(Nb0.94Ti0.06)2O6 piezoelectric ceramics prepared using calcined powders with different phases
复制标题
DOI：
10.1016/j.matchemphys.2013.11.015
复制
发表时间：
2014-02
影响因子：
4.6
通讯作者：
Xiao‐ming Chen;Jian Wang;Xiao-xia Liang;Kai Sun;Jian‐Ping Zhou;Peng Liu
中科院分区：
文献类型：
--
作者：
Xiao‐ming Chen;Jian Wang;Xiao-xia Liang;Kai Sun;Jian‐Ping Zhou;Peng Liu
为了获得致密、介电和压电性能优良的偏铌酸铅基陶瓷材料，分别以三方相和正交相为原料，制备了(Pb1.06−xBax)(Nb0.94Ti0.06)2O6(x=0.04，0.08，0.12)系压电陶瓷。选择900℃和1250℃两种不同的焙烧温度，得到不同物相的焙烧粉末。用X射线衍射仪、扫描电子显微镜、激光粒度仪和差示扫描量热仪对焙烧后的粉末进行了表征。详细研究了焙烧粉末的相结构对陶瓷的微晶结构、微结构、介电和压电性能的影响。陶瓷的晶格参数和晶粒度与焙烧粉末的相结构有关。Ba2+的掺杂对陶瓷的介电和压电性能有影响。由具有正交相的焙烧粉末制备的x=0.08的陶瓷具有最佳的介电和压电性能。
In an attempt to obtain dense lead metaniobate-based ceramics with improved dielectric and piezoelectric properties, the (Pb1.06−xBax)(Nb0.94Ti0.06)2O6(x= 0, 0.04, 0.08, 0.12) piezoelectric ceramics were prepared separately from the two kinds of calcined powders, i.e., the powders with the rhombohedral phase and orthorhombic phase. For obtaining the calcined powders with the different phases, two different calcination temperatures of 900 °C and 1250 °C were chosen. The calcined powders were characterized using X-ray diffraction, scanning electron microscope, laser particle size analyzer and differential scanning calorimetry. Effects of the phase structures of the calcined powders on crystallite structure, microstructure, dielectric and piezoelectric properties of the ceramics were studied in detail. The lattice parameters and grain size of the ceramics are related to the phase structures of the calcined powders. The doping of Ba2+has an influence on the dielectric and piezoelectric properties of the ceramics. The ceramics withx= 0.08 fabricated from the calcined powders with the orthorhombic phase demonstrate the optimum dielectric and piezoelectric properties.