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Range of solid solutions of silica in spinel type phase

IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata

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Title Range of solid solutions of silica in spinel type phase
 
Creator Chakraborty, A K
 
Subject Engineering Materials
 
Description Al2O3 - SiO2 mixed gel of varying compositions has been synthesised by using aluminium nitrate nonahydrate (AR) and tetraethyl orthosilicate (BDH) by coprecipitation technique. Phase evolution studies of these gels have been made by X-ray diffraction technique and Si-29 MAS NMR analysis. The lattice parameter of intermediate Al - Si spinel phase has been measured. The calculated data indicate that the composition of spinel phase does not alter irrespective of the composition of mixed gels chosen. Results demonstrate that slightly <28 wt-% SiO2 is likely to be present as solid solution with gamma-Al2O3 in Al - Si spinel structure. Mullitisation reactions of mixed gels of compositions on two sides of mullite stoichiometry are described.
 
Publisher MANEY PUBLISHING
 
Date 2006-12
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://cgcri.csircentral.net/35/1/chakraborty.pdf
Chakraborty, A K (2006) Range of solid solutions of silica in spinel type phase. Advances in Applied Ceramics, 105 (6). 297-303 . ISSN 1743-6753
 
Relation http://cgcri.csircentral.net/35/