Chemical preparation of high-field zinc oxide varistors

Technical Report · Sun Sep 01 00:00:00 EDT 1985

OSTI ID:5101607

Dosch, R G; Kimball, K M

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

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5101607
• Report Number(s): SAND-85-0195; ON: DE86001611
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
SEMICONDUCTOR RESISTORS
CHEMICAL PREPARATION
COBALT OXIDES
CURRENT DENSITY
DOPED MATERIALS
ELECTRIC FIELDS
ELECTRICAL PROPERTIES
GRAIN SIZE
MANGANESE OXIDES
MICROSTRUCTURE
PHYSICAL PROPERTIES
SINTERING
ZINC OXIDES
CHALCOGENIDES
COBALT COMPOUNDS
CRYSTAL STRUCTURE
ELECTRICAL EQUIPMENT
EQUIPMENT
FABRICATION
MANGANESE COMPOUNDS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
RESISTORS
SEMICONDUCTOR DEVICES
SIZE
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
ZINC COMPOUNDS
420800* - Engineering- Electronic Circuits & Devices- (-1989)