CAJ | 학술논문

研制了一种添加Bi(Cd1/2Ti1/2)O3、MnO2、SiO2的新型低温烧结改性PbTiO3压电陶瓷材料。实验发现，低熔物SiO2是影响烧结的主要因素，除能明显降低该材料烧结温度外，还能起掺杂改性作用。该材料具有低烧结温度、高压电活性、大压电各向异性、较高机械品质因数及低介电常数等优点。960℃烧成时主要性能参数为：厚度机电耦合系数kt=0.49；径向机电耦合系数kp=0.027；压电各向异性比kt/kp=18；压电应变常数d33=65 pC.N-1；机械品质因素Qm=514；密度ρv=7.4 g.cm-3；居里温度Tc=312℃；介电常数εT33/ε0=177；介质损耗tanδ=0.63％。该材料在叠层压电滤波器和叠层压电降压变压器方面显示出很好的应用前景。
연제료일충첨가Bi(Cd1/2Ti1/2)O3、MnO2、SiO2적신형저온소결개성PbTiO3압전도자재료。실험발현，저용물SiO2시영향소결적주요인소，제능명현강저해재료소결온도외，환능기참잡개성작용。해재료구유저소결온도、고압전활성、대압전각향이성、교고궤계품질인수급저개전상수등우점。960℃소성시주요성능삼수위：후도궤전우합계수kt=0.49；경향궤전우합계수kp=0.027；압전각향이성비kt/kp=18；압전응변상수d33=65 pC.N-1；궤계품질인소Qm=514；밀도ρv=7.4 g.cm-3；거리온도Tc=312℃；개전상수εT33/ε0=177；개질손모tanδ=0.63％。해재료재첩층압전려파기화첩층압전강압변압기방면현시출흔호적응용전경。
A new low-temperature sintering modified PbTiO3 piezoelectric ceramic material was prepared by adding Bi(Cd1/2Ti1/2)O3,MnO2,SiO2.It was found that low-melting additive SiO2 is the important factor which affect the sintering properties.The modified PT material has excellent properties such as low-sintering temperature,high piezoelectric activities,large piezoelectric anisotropy,high mechanical quality factor and low dielectric constant.The main parameters at 960℃ sintering are kt=0.49、kp=0.027、kt/kp=18、d33=65 pC.N-1、Qm=514、ρv=7.4g.cm-3、Tc=312℃、εT33/ε0=177、tanδ=0.63%.The material shows good application prospects in the fields of multiplayer piezoelectric filter and multiplayer piezoelectric step-down transformer.