【摘要】 研究了少量MnO2添加对Pb(Ni1/3Nb2/3)O3基复相陶瓷的介电常数温度特性和频率特性、介质损耗及电阻率的影响。结果表明,少量MnO2的加入,改善了复相陶瓷的介温特性和频率特性,降低了介电常数;同时降低了介质损耗,特别是低频高温下的介质损耗,提高了电阻率。对MnO2在复相陶瓷中所起的作用进行了分析。更多还原

【Abstract】 Effects of little MnO₂ additive on temperature and frequency characters of dielectric constants,dissipation factor and electrical resistivity of Pb(Ni_1/3Nb_2/3)O₃-based biphasic ceramics were studied.The results showed that temperature and frequency characters of dielectric constants for biphasic ceramics are improved and dielectric constants decrease by doping little MnO₂.At the same time,dissipation factors decrease,especially of low frequency and high temperature,and electrical resistivity was increased also.The roles of MnO₂ on PNN-based biphasic ceramics are analyzed.更多还原