Investigation of Low Temperature Sintering of Low Voltage Varistor Based on TiO₂

Abstract:

Low temperature sintering of TiO₂-base varistor was systematically investigated through doing with V₂O₅ and B-Si glass. Pellets prepared could be densely sintered from 1273 to 1473K. The highest relative density, 94.6%, was found in the sample sintered at 1433K. According to I-V plots of ceramic pellets, the nonlinear coefficient α and breakdown voltage V_1mA were obtained and found to be α=2~5 and V_1mA=15~30V. The room temperature dielectric constant was very large, high as to about 20000. Powder XRD analysis has shown the desirable macro-structural characteristics of these compacts.

• Periodical: Advanced Materials Research (Volume 852)
• Pages: 12-16
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.852.12
• Online since: January 2014
• Authors: De Jun Lan, Shu Quan Wan
• Keywords: Breakdown Voltage, Low Temperature Sintering, Non-Linear Coefficient, TiO₂-Based Varistor

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