Results 41 to 50 of about 4,953 (161)
Nonlinear electrical properties of grain boundaries in oxygen ion conductors - Modeling the varistor behavior [PDF]
, 2005 We report on numerical simulations of the grain-boundary varistor behavior recently observed in Y2O3-doped CeO2 of high purity. The aim of this study is to disclose the nature of the nonlinear electrical properties of the grain boundaries in oxygen ion ...
Guo, X., Meyer, R., Waser, R.
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Transformers Magazine, 2022 Current transformers are used to monitor large currents within power grids and power stations, producing a current in the device’s secondary winding that is proportional to the current flowing in its primary winding. Varistors are used to protect current transformers by preventing an open circuit condition if the secondary is disconnected, which can ...
Galvin, Dr. Tom, Coll, Dominic
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Advances in the synthesis of ZnO nanomaterials for varistor devices [PDF]
Journal of Materials Chemistry C, 2013 ZnO based varistors are widely used for overvoltage protection in many electrical and electronic circuits, at voltages ranging from a few to over a million volts. By careful control of the microstructure, through nano-structuring by chemical routes, it should be possible to produce varistors with high breakdown voltage (Vc), as this is proportional to ...
Pillai, Suresh +3 more
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The Grain Growth Control of ZnO-V2O5 Based Varistors by PrMnO3 Addition
Micromachines, 2022 In this study, the grain growth behaviour of ZnO-V2O5-based ceramics with 0.25–0.75 mol% additions of PrMnO3 was systematically investigated during sintering from 850 °C to 925 °C.
Maofeng Xu +8 more
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The effect of Sm2O3 on the sintering and grain growth behaviors of SnO2-based ceramics [PDF]
, 2019 The effect of samarium oxide was examined on the sintering, microstructure, and grain growth behaviors of (Co, Nb)-doped SnO2-based ceramics prepared by co-precipitation method.
Bastami, Hajieh +3 more
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Sintesis de ceramicos de ZnO dopados con praseodimio y cobalto
Materials Research, 2003 Zinc oxide, ZnO, is a very interesting compound in science and electronic ceramics technology. ZnO ceramics containing some additives were reported to show varistor action with excellent nonlinearity in current - voltage characteristics.
Ana Milena Cruz +3 more
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Efeito do Pr2O3 nas propriedades elétricas de varistores à base de SnO2 [PDF]
Cerâmica, 2003 A proposta deste trabalho foi o estudo e a obtenção de uma cerâmica densa à base de SnO2 dopada com CoO, Ta2O5 e diferentes concentrações de Pr2O3. Os sistemas apresentaram elevados valores de densidade relativa, e propriedades não ôhmicas.
L. G .P. Simões +6 more
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Flexural performance of textile fine grained mortar containing risk husk ash as a partial cement replacement in reinforced concrete beams [PDF]
, 2018 External strengthening of RC beam become a popular method to reduce deterioration. Due to highest demanding on external strengthening, a new innovation was introduced called as textile fine grained mortar (TFGM).
Mohammad, Noor Shuhada
core
Cerâmica, 2001 Tin oxide is an n type semiconductor material with a high covalent behavior. Mass transport in this oxide depends on the surface state promoted by atmosphere or by the solid solution of aliovalent oxide doping.
J. A. Varela +4 more
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Investigation of Diagnostic Techniques for Metal Oxide Surge Arresters [PDF]
, 2005 Gapless metal oxide surge arresters(MOSA)have been available in the market for many years since they were first introduced in the 1970's. The aim of this study is to investigate some reliable diagnostic techniques to assess the condition of a metal oxide
Mardira, Karl P. +2 more
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