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Elaboration, microstructure and oxidation behavior of metal-alumina and metal-chromia nanocomposite powders

Laurent, Christophe and Blaszczyk, Christophe and Brieu, Marc and Rousset, Abel Elaboration, microstructure and oxidation behavior of metal-alumina and metal-chromia nanocomposite powders. (1995) Nanostructured Materials, 6 (1-4). 317-320. ISSN 0965-9773

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Official URL: http://dx.doi.org/10.1016/0965-9773(95)00061-5

Abstract

Metal-Al203 and metal-Cr203 nanocomposite powders have been prepared by selective reduction in hydrogen of oxide solid solutions. The metallic phase (either Cr or an (Fe, Cr) alloy) is present in the form of nanometric particles inside and/or at the surface of the oxide matrix grains. The microstructure of the different composites has been compared and their air oxidation behavior has been investigated. The metal particles located in the open porosity of the matrix are totally oxidized at temperatures lower than 600°C, whereas those intragranularly located are stable up to 800°C. The oxidation behavior is generally complex and explanations in relation to the powder microstructure are proposed.

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 Nanostructured Materials website : http://www.sciencedirect.com/science/article/pii/0965977395000615
Audience (journal):International peer-reviewed journal
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Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:12 Mar 2014 11:36

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