Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/34883
Title: Influence of electroless nickel plating on I–V characteristics and its implications for reliability in ZnO-based ceramic varistors
Authors: Chen, WP
Lu, SG
Chan, HLW 
Keywords: Varistor
Zinc oxide
Degradation
Electroless nickel plating
Electroplating
Issue Date: 2003
Publisher: Elsevier
Source: Materials science and engineering B, 2003, v. 99, no. 1-3, p. 70-73 How to cite?
Journal: Materials science and engineering B
Abstract: A comparison experiment was designed and carried out to study the influence of electroless nickel plating on ZnO-based ceramic varistors. It was found that the influence was not caused by permeation of the plating solution; the influence was directly related to nickel deposition. It is proposed that adsorbed hydrogen atoms generated in electroless plating can diffuse into ZnO ceramic varistors and undergo a reduction reaction with them, which result in a substantial increase in the leakage current of the varistors. Some implications for the influence of electroplating on I–V characteristics and for the long-term degradation of ZnO varistors are also discussed, in which much attention is paid to the reduction reaction of atomic hydrogen generated by electrolysis of water.
URI: http://hdl.handle.net/10397/34883
ISSN: 0921-5107
DOI: 10.1016/S0921-5107(02)00567-6
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