Paper Title:
Properties of ZnO Varistors Prepared with Nano-Sized Powders
  Abstract

ZnO varistors with higher voltage gradients are expected in the power system, and the key to this property is to diminish the grain size. In this paper, nano-sized ZnO particles are used as the raw material in order to obtain small grains. Pellets are fabricated by two sintering methods: the conventional pressureless sintering and the spark plasma sintering (SPS). For the samples fabricated by the conventional sintering, the average grain size varies from 1 μm to more than 10 μm when the sintering temperature changes from 900 oC to 1200 oC. The voltage gradient can reach as high as 2020 V/mm. The grain size of the SPS samples is less than 1 μm, and the voltage gradients can reach 963 V/mm.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
514-516
DOI
10.4028/www.scientific.net/KEM.368-372.514
Citation
F. C. Luo, J. L. He, Y. H. Lin, J. Hu, "Properties of ZnO Varistors Prepared with Nano-Sized Powders", Key Engineering Materials, Vols. 368-372, pp. 514-516, 2008
Online since
February 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Junichi Tatami, Moegi Iguchi, Mikinori Hotta, Cheng Zhang, Katsutoshi Komeya, Takeshi Meguro, Mamoru Omori, Toshio Hirai, Manuel E. Brito, Yi Bing Cheng
105
Authors: Wei Hsing Tuan, S.M. Liu, T.J. Yang, Dong Ming Zhang, Zheng Yi Fu, Jing Kun Guo
5
Authors: Haisheng Zhong, Qiang Li, Zhifeng Zhong, Ming Cheng
Abstract:Ni-Zn ferrite ceramics were prepared from the blend of nano-sized powders and ultra-fine particles at the relative low sintering temperature...
2193
Authors: Mikinori Hotta, Junichi Hojo
Abstract:Sub-micron and nano-sized β-SiC powders were sintered with AlN and Y2O3 as sintering additives by spark plasma sintering (SPS). The sintered...
1022
Authors: H.B. Li, Jun Ting Luo, Kai Feng Zhang
Abstract:The amorphous nano-sized silicon nitride powders were sintered by liquid phase sintering method. Si3N4-Si2N2O composites were in-situ...
1069