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研制了一种新型的改性PbTiO3 陶瓷大各向异性材料 ,研究了这种新型材料的性能在不同MnCO3掺杂量和不同的极化电场下的变化 ,其中包括材料的机电耦合系数、机械品质因素、介电损耗等 .MnCO3 掺杂量为 1 .1 %～ 1 .3 % (mol/mol)时 ,材料既有大各向异性 ,又有高机械品质因素 .对MnCO3 影响材料大各向异性的原因进行了分析 ,指出锰掺杂从晶界、晶粒及晶体结构等方面同时对材料的性能施加影响 .
A new type of large anisotropic PbTiO3 ceramic material was developed. The properties of the new material were investigated under different MnCO3 doping levels and different polarization electric fields, including the electromechanical coupling coefficient, mechanical quality Factors, dielectric loss, etc. When MnCO3 doping amount is from1.1% to1.3% (mol / mol), the material has both large anisotropy and high mechanical quality.The influence of MnCO3 on the material’s large size The reason of the opposite sex is analyzed, and it is pointed out that Mn doping exerts influence on the properties of the material at the same time from the grain boundary, grain and crystal structure.