Tripathi, Himansu Shekhar and Mukherjee, B and Das, Sukhen and Haldar, Manas Kamal and Das, Samir Kumar and Ghosh, Arup (2003) Synthesis and densification of magnesium aluminate spinel: effect of MgO reactivity. Ceramics International, 29 (8). pp. 915-918. ISSN 0272-8842

PDF - Published Version Restricted to Registered users only Download (199Kb) | Request a copy

Abstract

Stoichiometric magnesium aluminate spinel was synthesized by reaction sintering of alumina with caustic and sintered magnesia. The volume expansion of 5-7% during MgAl2O4 formation was utilized to identify the starting temperature of spinel formation and densification by high temperature dilatometry. The magnesia reactivity was determined by measurement of crystallite size and specific surface area. Caustic magnesia and sintered magnesia behave differently vis-A-vis phase formation and densification of spinel. Densification of stoichiometric Mag-Al spinel was carried out between 1650 and 1750 degreesC. Attempts were made to correlate the MgO reactivity with microstructure and densification of spinel. (C) 2003 Elsevier Ltd and Techna S.r.l. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Grain growth; Thermal expansion; Spinels; Refractories
Subjects:	Refractories
Divisions:	Refractory
Depositing User:	Subhra Lahiri
Date Deposited:	02 Mar 2012 06:20
Last Modified:	02 Mar 2012 06:20
URI:	http://cgcri.csircentral.net/id/eprint/1104

Actions (login required)

View Item