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Title: Electrical Behavior of Nickel Coated YSZ Cermet Prepared by Electroless Coating Technique
Authors: Pratihar, S K
Das Sharma, A
Maiti, H S
Keywords: Ni/YSZ cermets
solid oxide fuel cells
Electrical conductivity
Issue Date: 2005
Publisher: Elsevier
Citation: Materials chemistry and physics, (In Press)
Abstract: Nickel – yttria stabilized zirconia (Ni/YSZ) cermet has been prepared by coating YSZ particles with metallic nickel using electroless coating technique. Concentration of nickel was varied between 7.23 and 64.99% by weight. Bulk samples were prepared using these nickel coated YSZ powders by uniaxial pressing followed by sintering in the temperature range 1200 – 1350oC with a soaking time of 2-6 h. A thorough investigation on the electrical characteristics of the samples has been performed and an attempt has been made to study the effect of starting YSZ particle size, matrix density on the temperature dependence of conductivity of the cermet. Samples prepared by this technique shows metallic conductivity at a Ni concentration as low as 27.04% by weight. A detailed microstructural investigation of the samples is also reported.
Description: Copyright for this article belongs to Elsevier Science Ltd
Appears in Collections:Journal Articles

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