Low Temperature Sintering of Doped ZnO-V2O5 Varistors

Abstract

Abstract: The low-temperature sintering characteristics and electrical properties of ZnO-V₂O₅ varistors
were studied through adding oxides with low melting point, which were the lead zinc borate glass frit forming materials. The results show
that the sintering temperature is significantly decreased to 800℃ with conventional electric furnace sintering and the nonlinear
properties are obviously enhanced through adding B₂O₃ and PbO. When the sample with co-doped 6wt% (PbO+B₂O₃) sintered at 800℃ for 4h, its
leakage current density J_L=7.2×10^-6A/cm² and nonlinear coefficient α=22.5.

Key words: varistor, lead zinc borate glass, low-temperature sintering

CLC Number:

TN304

WU Jun,XIE Chang-Sheng,HUANG Kai-Jin,WANG Ai-Hua,WANG Wen-Yan. Low Temperature Sintering of Doped ZnO-V₂O₅ Varistors[J]. Journal of Inorganic Materials.

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Low Temperature Sintering of Doped ZnO-V₂O₅ Varistors

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