Premium
Inner Electrodes for Multilayer Varistors
Author(s) -
Kuo ShuTing,
Tuan WeiHsing,
Lao YehWu,
Wen ChungKai,
Chen HueyRu
Publication year - 2009
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2008.02269.x
Subject(s) - materials science , electrode , varistor , doping , inert , composite material , nanotechnology , optoelectronics , voltage , electrical engineering , chemistry , organic chemistry , engineering
In the present study, Pt or AgPd metal is used as the inner electrode for Bi 2 O 3 ‐doped ZnO multilayer varistors (MLV). The growth of the ZnO grains is constrained by the presence of the inner electrodes. The Pt inner electrodes are chemically inert to Bi 2 O 3 ‐doped ZnO. The Bi 2 O 3 could react with Pd to form PdBi 2 O 4 . The Bi 2 O 3 ‐rich liquid also tends to wet the AgPd electrode. The size of ZnO grains in the MLV/AgPd specimen is larger. The ZnO grains in the MLV/AgPd specimen can even grow to a size larger than the layer thickness at the expense of electrode continuity.