Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16269
Title: Water-induced degradation of barium titanate ceramics studied by electrochemical hydrogen charging
Authors: Chen, WP
Jiang, XP
Wang, Y 
Peng, Z
Chan, HLW 
Issue Date: 2003
Source: Journal of the American Ceramic Society, 2003, v. 86, no. 4, p. 735-737 How to cite?
Journal: Journal of the American Ceramic Society 
Abstract: Water-induced degradation of barium titanate (BTO) ceramics has been investigated using electrochemical hydrogen charging, in which the silver electrodes of BTO ceramic specimens are made cathodes in a 0.01M NaOH solution to evolve hydrogen by electrolysis of water. After 80 h of treatment, the resistance of BTO decreases by ∼3 orders of magnitude, and the dielectric loss obviously increases. The degradation can be explained by the reduction reaction of atomic hydrogen with BTO. Hydrogen acts as a donor in BTO, and electrons are formed by the reduction. It is proposed that the reduction reaction of atomic hydrogen at ambient temperature by electrolysis of water is an important origin for degradation of BTO-based ceramic devices.
URI: http://hdl.handle.net/10397/16269
ISSN: 0002-7820
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