Nath, Mithun and Reddy, Vakiti Pradeep and Sinhamahapatra, Somnath and Ghosh, Arup and Tripathi, Himansu Sekhar and Dana, Kausik (2015) Effect of Alumina Reactivity on the Densification and Properties of Al2O3-Cr2O3 Refractories. International Journal of Applied Ceramic Technology, 12 (3). pp. 608-613. ISSN 1546-542X

PDF - Published Version Restricted to Registered users only Download (491Kb) | Request a copy

Abstract

Alumina-chrome (Al2O3-Cr2O3) refractories with Al2O3:Cr2O3 molar ratio 1:1 were synthesized in the temperature range of 1400-1700 degrees C by conventional solid-oxide reaction route. The effect of different aluminas (viz., hydrated and calcined) on the densification, microstructure, and properties of Al2O3-Cr2O3 refractories was investigated without changing the Cr2O3 source. The starting materials were analyzed to determine the chemical composition, mineralogy, density, surface area, and particle size. Sintered materials were characterized in terms of densification, phase assemblage, and mechanical strength at room temperature and at higher temperatures. Microstructural evolution at different sintering temperature was correlated with sintering characteristics. It can be concluded that the Al2O3-Cr2O3 refractories prepared with hydrated alumina as Al2O3 source show better densification and hot mechanical strength than corresponding calcined variety.

Item Type:	Article
Subjects:	Refractories
Divisions:	Refractory
Depositing User:	Bidhan Chaudhuri
Date Deposited:	31 Dec 2015 12:10
Last Modified:	31 Dec 2015 12:10
URI:	http://cgcri.csircentral.net/id/eprint/3052

Actions (login required)

View Item