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Tetragonal-(Zr,Co)O2 solid solution: Combustion synthesis, thermal stability in air and reduction in H2, H2–CH4 and H2–C2H4 atmospheres

Legorreta Garcia, Felipe and Peigney, Alain and Laurent, Christophe Tetragonal-(Zr,Co)O2 solid solution: Combustion synthesis, thermal stability in air and reduction in H2, H2–CH4 and H2–C2H4 atmospheres. (2008) Materials Research Bulletin, vol. 43 (n° 11). pp. 3088-3099. ISSN 0025-5408

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Official URL: http://dx.doi.org/10.1016/j.materresbull.2007.11.008

Abstract

The synthesis of Co2+-stabilized zirconia by the nitrate/urea combustion route is investigated. Using seven times the so-called stoichiometric urea proportion allows to obtain for the first time the Zr0.9Co0.1O1.9 solid solution fully stabilized in tetragonal form. The thermal stability in air and the reduction in H2, H2–CH4 and H2–C2H4 atmospheres are studied. The carbon forms obtained upon reduction are investigated. Reduction in H2–CH4 produces many carbon species including short carbon nanofibers, nanoribbons, hollow particles often forming bamboo structures, carbon-encapsulated Co particles and carbon nanotubes. Reduction in H2–C2H4 produces 15–30 nm nanofibers.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Materials Research Bulletin website : http://www.sciencedirect.com/science/journal/00255408
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Celine Cabaup

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