Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14545
Title: Water-induced DC and AC degradations in TiO2-based ceramic capacitors
Authors: Chen, WP
Wang, Y 
Wang, XX
Wang, J
Chan, HLW 
Keywords: Capacitor
Degradation
Reduction
Water
Issue Date: 2003
Publisher: Elsevier
Source: Materials chemistry and physics, 2003, v. 82, no. 3, p. 520-524 How to cite?
Journal: Materials chemistry and physics 
Abstract: Water-induced degradations of TiO2-based ceramic capacitors in the presence of dc and ac voltages are reported in this paper. Atomic hydrogen generated by electrolysis of water using dc voltages reduced TiO 2-based ceramics at ambient temperature. The resulting degradation was characterized by an increase in capacitance, a large dielectric loss and a dramatic decrease in insulation resistance. Hydrogen and oxygen generated by the electrolysis of water using ac voltages reacted with TiO2-based ceramics. The resulting degradation was characterized by a decrease in capacitance, a large dielectric loss, but no noticeable changes in insulation resistance. Water played a vital role in both dc and ac degradations of TiO 2-based capacitors and an effort should be made to prevent water-induced degradations.
URI: http://hdl.handle.net/10397/14545
ISSN: 0254-0584
EISSN: 1879-3312
DOI: 10.1016/S0254-0584(03)00362-6
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