Tetragonal-(Zr,Co)O2 solid solution: Combustion synthesis, thermal stability in air and reduction in H2, H2–CH4 and H2–C2H4 atmospheres
| Autor: | Felipe Legorreta Garcia, Alain Peigney, Christophe Laurent |
|---|---|
| Přispěvatelé: | Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE) |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
B. Chemical synthesis
Materials science Carbon nanofiber Mechanical Engineering Matériaux A. Composites Inorganic chemistry chemistry.chemical_element Carbon nanotube Condensed Matter Physics Combustion A. Nanostructures law.invention A. Oxides Tetragonal crystal system chemistry Mechanics of Materials law General Materials Science Thermal stability Carbon Stoichiometry Solid solution |
| Zdroj: | Materials Research Bulletin. |
| ISSN: | 0025-5408 |
| Popis: | The synthesis of Co 2+ -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 Zr 0.9 Co 0.1 O 1.9 solid solution fully stabilized in tetragonal form. The thermal stability in air and the reduction in H 2 , H 2 –CH 4 and H 2 –C 2 H 4 atmospheres are studied. The carbon forms obtained upon reduction are investigated. Reduction in H 2 –CH 4 produces many carbon species including short carbon nanofibers, nanoribbons, hollow particles often forming bamboo structures, carbon-encapsulated Co particles and carbon nanotubes. Reduction in H 2 –C 2 H 4 produces 15–30 nm nanofibers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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