Paper Title:
Preparation of Ni/BaTiO3 Composites and PTC Effect
  Abstract

Ni/BaTiO3 composite was prepared by decomposition of NiC2O4·2H2O/BaTiO3 precursor, which was prepared by precipitating of nickel in the form of oxalate into the BaTiO3 slurry. The composite must be sintered in reducing atmosphere. Otherwise NTC effect would be introduced. The prepared composite almost had no PTC effect. But PTC effect of the Ni/BaTiO3 composite can be effectively renewed by heat-treatment in air. Under a proper composition and method, the composite shows low room-temperature resistivity (ρRT=6.0 Ω·cm) and obvious PTC effect (ρmax/ρmin=102).

  Info
Periodical
Key Engineering Materials (Volumes 280-283)
Edited by
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages
341-344
DOI
10.4028/www.scientific.net/KEM.280-283.341
Citation
X. L. Li, Y. F. Qu, W. B. Ma, Z. S. Zheng, "Preparation of Ni/BaTiO3 Composites and PTC Effect", Key Engineering Materials, Vols. 280-283, pp. 341-344, 2005
Online since
February 2007
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$32.00
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