无机材料学报2000，Vol.15Issue(2)：376-380,5.
Sol-Gel法制备 ZnO压敏陶瓷及其电性
Preparation of Rare Earth Oxide Doped ZnO Varistor and its Electrical Properties
摘要
Abstract
A new process of preparing non-linear ZnO varistor ceramics was reported. The optimum processing conditions were determined as follows: Zn(NO3)2 and NaOH as the raw material, the concentration of Zn2+ to be above 0.5mol*L-1, pH value of 7.5, calcining temperature of 300C, sintering temperature of 1200C; the varistors with non-linear coefficient of 28 were obtained. The effect of rare earth element La2O3 on the electrical properties of the ceramics was discussed to be: doping at low concentration is helpful to enhance its breakdown voltage; at high concentration its voltage sensitive properties will disappear. The powder was characterized by XRD and TEM, showing the five-additive powder to be spherical and with a diameter about 40～80 nm.关键词
ZnO陶瓷/Sol-Gel法/压敏电阻Key words
ZnO ceramic/sol-gel process/varistor分类
矿业与冶金引用本文复制引用
刘素琴,黄可龙,宋志方,彭斌..Sol-Gel法制备 ZnO压敏陶瓷及其电性[J].无机材料学报,2000,15(2):376-380,5.基金项目
国家有色工业局科研基金项目(96K--07--06) （96K--07--06）
