掺杂La2O_3的ZnO-Pr_6O_(11)系压敏陶瓷材料  

Study on the Varistor Ceramics of ZnO-Pr_6O_(11) System Doped with La_2O_3

作　　者：王风贺[1] 雷武[1] 夏明珠[1] 王风云[1] 

机构地区：[1]南京理工大学工业化学研究所,江苏南京210094

出　　处：《电子元件与材料》2002年第12期22-23,26,共3页Electronic Components And Materials

摘　　要：研究了掺杂La2O3对ZnO-Pr6O11系压敏陶瓷的电性能和衰变特性的影响。试验结果表明:随La2O3添加量的增加,压敏电压(V1mA)和非线性系数(α)增加,漏电流(IL)减少。掺杂La2O3的ZnO-Pr6O11系压敏陶瓷性能稳定,具有良好的抗老化作用。The electrical properties and degradation behavior of the varistor ceramics of ZnO-Pr6O11 system doped with La2O3 are influenced by La2O3 content. The experimental results show when La2O3 content increases, varistor voltage and nonlinear exponent increase, and leakage current decreases. The varistor ceramics exhibit a high stability and excellent resistance to ageing.

关 键 词：LA2O3 ZnO-Pr6O11 压敏陶瓷 显微结构 电性能 氧化锌-氧化谱 三氧化二镧 

分 类 号：TN304.93[电子电信—物理电子学]