We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
The nonlinear electrical behavior of ZnO-based varistor ceramics with CaSiO<sub>3</sub> addition.
- Authors
Chen, Guo-hua; Li, Ji-le; Yuan, Chang-lai; Yang, Yun
- Abstract
ZnO-based varistor ceramics with various amounts of CaSiO 3 have been prepared by the conventional solid-state reaction route, and the phase composition, microstructure and electrical properties have been investigated by XRD, SEM, a V–I source/measure unit and impedance spectroscopy (IS). The XRD analyses show the presence of primary phase ZnO and some minor secondary phases. The electrical properties analysis results show that the nonlinear coefficient of the varistor ceramics is in the range of 14.9–30.9, the breakdown voltage in the range of 57.0–168.8 V/mm, and the leakage current in the range of 1.1–31.5 μA/cm 2. A schematic model for the electrical microstructure of ZnO-based varistor ceramics is proposed with an equivalent circuit of Ra ( RgCg)( RgbCgb) by IS.
- Subjects
ZINC oxide; VARISTORS; SEMICONDUCTOR diodes; CERAMIC materials; SILICON oxynitride
- Publication
Journal of Materials Science, 2014, Vol 49, Issue 2, p758
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-013-7758-y