Preparation of pure boehmite, alpha-Al2O3 and their mixtures by hydrothermal oxidation of aluminium metal

Kannan, TS and Panda, PK and Jaleel, VA (1997) Preparation of pure boehmite, alpha-Al2O3 and their mixtures by hydrothermal oxidation of aluminium metal. Journal of Materials Science Letters, 16 (10). pp. 830-834. ISSN 0261-8028

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Abstract

A hydrothermal oxidation process for preparing pure boehmite, alpha-Al2O3, and their mixtures by oxidation of pure aluminum metal is described, and the reaction mechanisms involved are identified. SEM images are presented which show distinct morphologies of boehmite, alpha-Al2O3, and boehmite + alpha-Al2O3 phases. Near sperical shapes of alpha-Al2O3 powder phases are obtained at 550 C with 30 percent volume of fill.

Item Type: Article
Uncontrolled Keywords: Aluminum oxides;Oxidation;Aluminum;Metal powder;Autoclaves;Reaction kinetics;X-ray diffraction;Scanning electron microscopy;Particle size
Subjects: CHEMISTRY AND MATERIALS > Nonmetallic Materials
Depositing User: M/S ICAST NAL
Date Deposited: 10 Oct 2006
Last Modified: 24 May 2010 04:21
URI: http://nal-ir.nal.res.in/id/eprint/2926

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