Chemical preparation and properties of high-field zinc oxide varistors

Journal Article · Wed Jan 01 00:00:00 EST 1986 · J. Mat. Res.; (United States)

DOI:https://doi.org/10.1557/JMR.1986.0090· OSTI ID:5935298

Dosch, R G; Tuttle, B A; Brooks, R A

Chemical preparation methods were developed for high-field ZnO varistors which used precipitation techniques to prepare precursor powders. Varistors were made by sintering uniaxially pressed pellets in the range of 675/sup 0/-740 /sup 0/C in air. Properties of these varistors included electric fields (E) in the 10-100 kV/cm range at current densities (J) of 5 A/cm/sup 2/, nonlinearity coefficients (..cap alpha..) greater than 30 for 2.5< or =J< or =5.0 A/cm/sup 2/, and densities in the range of 65%-99% of theoretical depending both on sintering temperature and composition.

• Research Organization: Sandia National Laboratories, P. O. Box 5800, Albuquerque, New Mexico 87185
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5935298
• Journal Information: J. Mat. Res.; (United States), Vol. 1:1
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
SEMICONDUCTOR RESISTORS
CHEMICAL PREPARATION
ELECTRICAL PROPERTIES
CURRENT DENSITY
ELECTRIC FIELDS
SINTERING
ZINC OXIDES
CHALCOGENIDES
ELECTRICAL EQUIPMENT
EQUIPMENT
FABRICATION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RESISTORS
SEMICONDUCTOR DEVICES
SYNTHESIS
ZINC COMPOUNDS
420800* - Engineering- Electronic Circuits &amp; Devices- (-1989)