摘要
The relationship between sintering process and vaporization of the Bi2O3 in ZnO-Bi2O3-based varistor ceramics was investigated.The phase and microstructure evolution during the sintering process were examined.The results show that the higher the sintering temperature or the longer the sintering time is,the more the Bi2O3 is volatilized.The heating rate has little effects on the Bi2O3 volatilized in ZnO-Bi2O3-based varistor ceramics.This is in accordance with the relative X-ray diffraction peak area ratio analysis.The results also show that the sintering temperature has the greatest impact on the vaporization of the Bi2O3,then followed by sintering time,and the effect of the heating rate is the minimum.
The relationship between sintering process and vaporization of the Bi2O3 in ZnO-Bi2O3-based varistor ceramics was investigated. The phase and microstructure evolution during the sintering process were examined. The results show that the higher the sintering temperature or the longer the sintering time is, the more the Bi2O3 is volatilized. The heating rate has little effects on the Bi2O3 volatilized in ZnO-Bi2O3-based varistor ceramics. This is in accordance with the relative X-ray diffraction peak area ratio analysis. The results also show that the sintering temperature has the greatest impact on the vaporization of the Bi2O3, then followed by sintering time, and the effect of the heating rate is the minimum.
出处
《中国有色金属学会会刊:英文版》
EI
CSCD
2009年第6期1526-1532,共7页
Transactions of Nonferrous Metals Society of China
基金
Project(06DZ05902)supported by Technical Innovation Team Program of Shanghai Science and Technology Committee of China