Nath, Mithun and Sen, Sandipan and Banerjee, K and Ghosh, A and Tripathi, Himansu Shekhar (2013) Densification behavior and properties of alumina-chrome ceramics: Effect of TiO2. Ceramics International, 39 (1). pp. 227-232. ISSN 0272-8842

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Abstract

Highly dense alumina-chrome bodies with low porosity are usually used as corrosion and thermal resistant refractories. Alumina-chrome refractory with molar ratio 1:1 was developed using chemical grade hydrated alumina and chromium (III) oxide by conventional sintering route. Batch materials were attrition milled, isostatically pressed and sintered in the temperature range from 1000 degrees C to 1700 degrees C with 2 h soaking at peak temperature. Phase development of the sintered materials with temperature was studied by X-ray diffraction. Sintering temperature, sintering condition and addition of sintering aid (TiO2) have immense effect on the densification of the alumina chrome refractory. Highly dense alumina chrome refractory with almost nil apparent porosity was developed at 1500 degrees C in reducing atmosphere. Flexural strength of the sintered materials at room temperature and at 1200 degrees C was also measured. 1 wt% TiO2 gives the optimum result with respect to densification and flexural strength. (C) 2012 Published by Elsevier Ltd and Techna Group S.r.l.

Item Type:	Article
Subjects:	Refractories Engineering Materials
Divisions:	Refractory
Depositing User:	Bidhan Chaudhuri
Date Deposited:	13 Sep 2013 09:23
Last Modified:	13 Sep 2013 09:23
URI:	http://cgcri.csircentral.net/id/eprint/2160

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