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Mechanical-thermal synthesis of Al2O3-Cr composite powders
Ecole des Mines.
Ecole des Mines.
Ecole des Mines.
Ecole des Mines.
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1995 (English)In: Journal of the European Ceramic Society, ISSN 0955-2219, E-ISSN 1873-619X, Vol. 15, no 12, p. 1207-1212Article in journal (Refereed) Published
Abstract [en]

Three different approaches have been investigated to synthesize alumina-chromium composites by displacement reactions between aluminium and chromia. The reactions have been performed either by pure mechanosynthesis or pure thermal ignition or also by a combined mechanical and thermal activation process. Differential thermal analysis, dilatometry and high temperature X-ray diffraction have been used to show the various reaction mechanisms and chemical transformations. High-energy milling of the powder modifies the reactivity of the system. A partial pre-milling treatment not only reduces the reaction temperature but can also induce a different reaction path. It has been shown that an appropriate mechanical-thermal treatment leads to the synthesis of an alumina-chromia composite by a pure solid-state process: intermediate reaction stages exhibit little if any liquid phases.

Place, publisher, year, edition, pages
1995. Vol. 15, no 12, p. 1207-1212
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-5430DOI: 10.1016/0955-2219(95)00096-8ISI: A1995TM75900007Scopus ID: 2-s2.0-0029534618Local ID: 38733360-fc87-11db-b816-000ea68e967bOAI: oai:DiVA.org:ltu-5430DiVA, id: diva2:978304
Note
Godkänd; 1995; 20070507 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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