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Citrate-nitrate gel transformation behavior during the synthesis of combustion-derived NiO-yttria-stabilized zirconia composite

Published online by Cambridge University Press:  31 January 2011

Marjan Marinšek ,
Klementina Zupan  and
Jadran Maček
Marjan Marinšek
Affiliation:
University of Ljubljana, Askerceva Cesta 005, 1000 Ljubljana, Slovenia (Received 6 February 2003; accepted 1 April 2003)
Klementina Zupan
Affiliation:
University of Ljubljana, Askerceva Cesta 005, 1000 Ljubljana, Slovenia (Received 6 February 2003; accepted 1 April 2003)
Jadran Maček
Affiliation:
University of Ljubljana, Askerceva Cesta 005, 1000 Ljubljana, Slovenia (Received 6 February 2003; accepted 1 April 2003)
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Abstract

NiO-yttria-stabilized zirconia powder mixtures were prepared from reactive citrate-nitrate gels using the combustion technique. The influence of the fuel/oxidant molar ratio in the precursor on the combustion rate and its thermal characteristics was studied by thermal analysis and evolved gas analysis. It was found that the precursor thermal decomposition properties depended strongly on the citrate/nitrate ratio prior to the combustion. Intermediate precursors and final powder ashes were also analyzed by x-ray diffraction.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 7 , July 2003 , pp. 1551 - 1560
Copyright
Copyright © Materials Research Society 2003

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