Effect of Al2O3 on the microstructure and electrical properties of WO3-based varistor ceramics

Effect of Al2O3 on the microstructure and electrical properties of WO3-based varistor ceramics

Addition of Al2O3 shifts the current-voltage characteristics to higher fields and inhibits the grain growth of the WO3-based non-Ohmic ceramics. The non-linearity coefficient of the current-voltage characteristics of the Al2O3-doped WO3 ceramics increases with sintering temperature and attains a max...

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Veröffentlicht in:Journal of the European Ceramic Society 2000, Vol.20 (6), p.747-749
Hauptverfasser: MAKAROV, V. O, TRONTELJ, M
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Electrotechnical and electronic ceramics
Exact sciences and technology
Technical ceramics
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Zusammenfassung:Addition of Al2O3 shifts the current-voltage characteristics to higher fields and inhibits the grain growth of the WO3-based non-Ohmic ceramics. The non-linearity coefficient of the current-voltage characteristics of the Al2O3-doped WO3 ceramics increases with sintering temperature and attains a maximum value at 1250 C. 3 refs.
ISSN:0955-2219
1873-619X
DOI:10.1016/S0955-2219(99)00194-6