Flat interfaces in zinc oxide-based varistor ceramics

Journal Article · Fri Jan 31 23:00:00 EST 1992 · Journal of Materials Research; (United States)

DOI:https://doi.org/10.1557/JMR.1992.0474· OSTI ID:5002608

Sung, G Y; McKernan, S; Carter, C B ^[1]

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1. Department of Materials Science and Engineering, Bard Hall, Cornell University, Ithaca, New York 14853 (United States)

Four types of structurally different, flat interfaces have been observed in ZnO-based varistor ceramics containing metal-oxides additives (Bi, Mn, and Ti) by bright-field and high-resolution imaging in a transmission electron microscope. Orientation relationships have been characterized by selected-area diffraction. The faceting of ZnO grains when in contact with {beta}--Bi{sub 2}O{sub 3} is discussed in relation to the anisotropic growth of the ZnO grains which leads to pronounced faceting parallel to (0001) planes.

• DOE Contract Number: FG02-89ER45381
• OSTI ID: 5002608
• Journal Information: Journal of Materials Research; (United States), Journal Name: Journal of Materials Research; (United States) Vol. 7:2; ISSN JMREE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ADDITIVES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CERAMICS
CHALCOGENIDES
CRYSTAL STRUCTURE
ELECTRICAL EQUIPMENT
ELECTRON MICROSCOPY
EQUIPMENT
GRAIN GROWTH
INTERFACES
MANGANESE COMPOUNDS
MANGANESE OXIDES
MICROSCOPY
MICROSTRUCTURE
ORIENTATION
OXIDES
OXYGEN COMPOUNDS
RESISTORS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR RESISTORS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
ZINC COMPOUNDS
ZINC OXIDES