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Preparation and firing of a TiC/Si powder mixture
Department of applied physics and mechanical engineering, Luleå University of Technology. (division of engineering materials)
Department of applied physics and mechanical engineering, Luleå University of Technology. (division of engineering materials)
Linköping University, Department of Physics, Chemistry and Biology, Nanostructured Materials. Linköping University, The Institute of Technology. (division of nanostructured materials)ORCID iD: 0000-0002-2286-5588
2009 (English)In: IOP Conference Series-Materials Science and Engineering, ISSN 1757-8981, Vol. 5, 012016- p.Article in journal (Refereed) Published
Abstract [en]

This paper describes how the preparation and heat treatment of TiC/Sipowders influences the phase reactions during firing. The powders are prepared by milling andsome effects of powder preparation are discussed. A solid state displacement reactionaccording to: 3TiC + 2Si → Ti3SiC2 + SiC is a priori expected to take place during heattreatment. The firing procedure is investigated with respect to the effect of heat treatment timeand temperature on the phases produced, especially Ti3SiC2. Samples were heat treated in agraphite lined furnace. Heat treated samples are analysed by x-ray diffraction, scanningelectron microscope and energy dispersive spectroscopy. Ti3SiC2, TiC and SiC are dominant inthe final products. The highest amount of Ti3SiC2 is achieved for short holding times (2-4hours) at high temperatures (1350-1400ºC). Ti3SiC2 appears to decompose at elevatedtemperatures or extended times, through a Ti3SiC2 ® TiC + Si(g) type reaction. The activationenergy of Ti3SiC2 phase formation is determined to be 289 kJ/mol, using the Mehl-Avrami-Johnson model.

Place, publisher, year, edition, pages
Bristol, UK: Institute of Physics Publishing (IOPP), 2009. Vol. 5, 012016- p.
National Category
Materials Engineering
URN: urn:nbn:se:liu:diva-21872DOI: 10.1088/1757-899X/5/1/012016ISI: 000285529200016OAI: diva2:241863
5th International EEIGM-AMASE-FORGEMAT Conference on Advanced Materials Research, Nancy, FRANCE NOV 04-05, 2009
Available from: 2010-02-02 Created: 2009-10-06 Last updated: 2013-10-02Bibliographically approved

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Odén, Magnus
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