Aqueous Precipitation of Spherical Zinc Oxide Powders for Varistor Applications

Sossina M. Haile; David W. Johnson; Gary H. Wiseman; H. Kent Bowen

doi:10.1111/j.1151-2916.1989.tb06020.x

Aqueous Precipitation of Spherical Zinc Oxide Powders for Varistor Applications

Sossina M. Haile^*, David W. Johnson, Gary H. Wiseman, H. Kent Bowen

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

117 Scopus citations

Abstract

Aqueous precipitation has been used to prepare spherical ZnO particles. These powders have been shown to be suitable for use in the preparation of varistors. The uniform size distribution and uniform coating of these powders with the appropriate dopants allowed fabrication of varistors with improved properties over those fabricated from conventionally ball‐milled and calcined powders. The improved properties were a high coefficient of nonlinearity (∼44) in the nonohmic region, a sharp change in electrical behavior from ohmic to nonohmic, and a high resistivity (5×10¹² SOM°m) at low voltages.

Original language	English (US)
Pages (from-to)	2004-2008
Number of pages	5
Journal	Journal of the American Ceramic Society
Volume	72
Issue number	10
DOIs	https://doi.org/10.1111/j.1151-2916.1989.tb06020.x
State	Published - Jan 1 1989

Keywords

colloids
dopants
powders
varistors
zinc oxide

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.1989.tb06020.x

Cite this

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abstract = "Aqueous precipitation has been used to prepare spherical ZnO particles. These powders have been shown to be suitable for use in the preparation of varistors. The uniform size distribution and uniform coating of these powders with the appropriate dopants allowed fabrication of varistors with improved properties over those fabricated from conventionally ball‐milled and calcined powders. The improved properties were a high coefficient of nonlinearity (∼44) in the nonohmic region, a sharp change in electrical behavior from ohmic to nonohmic, and a high resistivity (5×1012 SOM°m) at low voltages.",

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AU - Bowen, H. Kent

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Y1 - 1989/1/1

N2 - Aqueous precipitation has been used to prepare spherical ZnO particles. These powders have been shown to be suitable for use in the preparation of varistors. The uniform size distribution and uniform coating of these powders with the appropriate dopants allowed fabrication of varistors with improved properties over those fabricated from conventionally ball‐milled and calcined powders. The improved properties were a high coefficient of nonlinearity (∼44) in the nonohmic region, a sharp change in electrical behavior from ohmic to nonohmic, and a high resistivity (5×1012 SOM°m) at low voltages.

AB - Aqueous precipitation has been used to prepare spherical ZnO particles. These powders have been shown to be suitable for use in the preparation of varistors. The uniform size distribution and uniform coating of these powders with the appropriate dopants allowed fabrication of varistors with improved properties over those fabricated from conventionally ball‐milled and calcined powders. The improved properties were a high coefficient of nonlinearity (∼44) in the nonohmic region, a sharp change in electrical behavior from ohmic to nonohmic, and a high resistivity (5×1012 SOM°m) at low voltages.

KW - colloids

KW - dopants

KW - powders

KW - varistors

KW - zinc oxide

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Aqueous Precipitation of Spherical Zinc Oxide Powders for Varistor Applications

Abstract

Keywords

ASJC Scopus subject areas

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