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  • 1
    Digitale Medien
    Digitale Medien
    Nucleation and Grain Growth Kinetics of Amorphous to Nanocrystalline Ceria Solid Solutions (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 558-559 (Oct. 2007), p. 1339-1344 
    Details
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: Nanocrystalline ceria-based thin films are of potential interest for use as gas-sensing layers andelectrolytes in micro-Solid Oxide Fuel Cells (micro-SOFC) used for energy supply of nextgeneration portables. In these devices the thin films have to be operated at intermediate to hightemperatures (500 - 1000 °C) to be sufficiently high electrical conductive. However, only little isknown on the nucleation and grain growth kinetics of pure ceria and its solid solutions when presentas nanocrystalline thin film microstructures (average grain size 〈 100 nm). In this study amorphous,dense and crack-free CeO2 and Ce0.8Gd0.2O1.9-x thin films have been deposited by spray pyrolysis onsapphire. These films were crystallized to biphasic amorphous-nanocrystalline and fullynanocrystalline microstructures upon annealing with respect to time, temperature, heating rate anddoping. Nucleation and grain growth kinetics were studied by differential scanning calorimetry, Xraydiffraction analysis with in-situ heating chamber and scanning electron microscopy
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.558-559.1339.pdf
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