Dependence of Properties of High Voltage Zinc Oxide Varistor from Antimony and Nickel Oxides

Studies were carried out to reduce the leakage current of high-voltage ZnO varistor ceramics by varying Sb 2 O 3 and NiO content in a ZnO-Bi 2 O 3 -Sb 2 O 3 -Al 2 O 3 -Co 3 O 4 -NiO. It was found that the ceramic composition (wt %): ZnO 80, Bi 2 O 3 5.83, Sb 2 O 3 2.62, A1 2 O 3 4.66, Co 2 O 3 3.80,...

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Bibliographic Details
Published in:Russian journal of applied chemistry 2019-09, Vol.92 (9), p.1232-1238
Main Authors: Gromov, O. G., Tikhomirova, E. L., Savel’ev, Yu. A.
Format: Article
Language:English
Subjects:
Aluminum oxide
Antimony
Antimony trioxide
Bismuth oxides
Bismuth trioxide
Ceramics
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Cobalt oxides
Dependence
Electronic devices
High voltages
Industrial Chemistry/Chemical Engineering
Inorganic Synthesis and Industrial Inorganic Chemistry
Leakage current
Nickel oxides
Varistors
Zinc oxide
Zinc oxides
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Summary:Studies were carried out to reduce the leakage current of high-voltage ZnO varistor ceramics by varying Sb 2 O 3 and NiO content in a ZnO-Bi 2 O 3 -Sb 2 O 3 -Al 2 O 3 -Co 3 O 4 -NiO. It was found that the ceramic composition (wt %): ZnO 80, Bi 2 O 3 5.83, Sb 2 O 3 2.62, A1 2 O 3 4.66, Co 2 O 3 3.80, NiO 3.09, has a minimum leakage current density I out ≤ 0.1 μA cm -2 , breakdown voltage U b = 4.1kV mm -1 , nonlinearity coefficient α = 65. The resulting ceramics are promising for the production of varistors with high stability of performance.
ISSN:1070-4272
1608-3296
DOI:10.1134/S1070427219090076