COPRECIPITATION PREPARATION AND VOLTAGE SENSITIVE CHARACTERISTICS OF DOPED ZnO VARISTOR
来源期刊：中南大学学报(英文版)1999年第1期
论文作者：Huang Kelong Peng Bin Pan Chunyue Shong Zhifang
文章页码：20 - 23
Key words：zinc oxide ceramics; coprecipitation; voltage-sensitive; multi-component dopin
Abstract: A process of preparing ZnO voltage-sensitive ceramics doped with some oxides by coprecipitation was described in the paper. The thermal properties of ZnO nanometer powders and the current-voltage characteristics of the ceramics have been investigated. The results showed that the six-additive ZnO powders with hexagonal system were homogeneous grain size distribution in microstructure, the optimal reaction pH is 6.90±0.05, the temperature for calcining and sintering was at about 500℃and 1100 ℃, respectively. The powders were also examined by SEM, IR and XRD etc, and the effect of doping La2O3 on the electrical properties of ZnO varistor was investigated too.
