A rapid combustion process for the preparation of crystalline mullite powders

Chandran, Gopi R and Patil, KC (1990) A rapid combustion process for the preparation of crystalline mullite powders. In: Materials Letters, 10 (6). pp. 291-295.

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Abstract

An aqueous heterogeneous redox mixture containing aluminium nitrate, silica fume (soot), and urea in appropriate mole ratio, when rapidly heated to $500^{\circ}C$, boils, foams and ignites with a flame to yield weakly crystalline mullite powder in less than 5 min. Fully crystalline mullite was obtained by incorporating an extra amount of oxidizer, such as ammonium perchlorate. The solid combustion products (mullite) were identified by X-ray powder diffraction and characterized by IR, particle size analysis, surface area measurements, and by SEM and TEM microscopies.

Item Type:	Journal Article
Publication:	Materials Letters
Publisher:	Elsevier Science B.V.
Additional Information:	Copyright of this article belongs to Elsevier Science B.V.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	19 Nov 2007
Last Modified:	19 Sep 2010 04:41
URI:	http://eprints.iisc.ac.in/id/eprint/12524

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