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Inhomogeneity in sintered ZnO based non-linear resistors

Asokan, T and Iyengar, GNK and Nagabhushana, GR (1988) Inhomogeneity in sintered ZnO based non-linear resistors. In: Ceramics International, 14 (1). 35 -41.

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Official URL: http://dx.doi.org/10.1016/0272-8842(88)90016-8


Investigations have been made on the inhomogeneous characteristics of sintered ZnO based non-linear resistors caused by localized particle growth on the surface and by internal flaws. The presence of Sb2O3 was responsible for the observed particle growth. A part of the Bi2O3 on the surface was found to be in the reduced state. Two kinds of failure mode, cracking and puncturing, were observed when the samples were subjected to high-energy pulses. The puncture mode is caused by local melting around the regions of high current density, whereas the cracking mode results from thermally induced stresses.

Item Type: Journal Article
Publication: Ceramics International
Publisher: Elsevier science
Additional Information: Copyright of this article belongs to Elsevier science.
Department/Centre: Division of Electrical Sciences > High Voltage Engineering (merged with EE)
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 21 Sep 2010 07:39
Last Modified: 21 Sep 2010 07:39
URI: http://eprints.iisc.ac.in/id/eprint/32299

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