Chemical preparation and properties of high-field zinc oxide varistors

Journal Article · Tue Dec 31 23:00:00 EST 1985 · 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), Journal Name: J. Mat. Res.; (United States) Vol. 1:1; ISSN JMREE
• Country of Publication: United States
• Language: English

Related Subjects

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