Debnath, Radhaballabh and Chaudhuri, J (1992) Mutual phase stabilization of aluminium phosphate and titania in AlPO4-TiO2 binary system. Bulletin of Materials Science, 15 (5). pp. 441-447. ISSN 0250-4707
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Abstract
Crystallization behaviour of amorphous aluminium phosphate (AlPO4) an titania (TiO2) in a mixed system of the two (5:1) has been reviewed in the light of our recent results. The polymorphous aluminium phosphate in such a binary system grows exclusively in a single phase over a temperature range 500-1150-degrees-C. The phase is reported to have a tridymite-like structure belonging to orthorhombic system with cell parameters a = 9.638 +/-0-0019, b = 8.664 +/- 0-0017 and c = 18.280 +/- 0036 angstrom. Titania in the system preferentially retains its anatase phase morphology up to a temperature (950-degrees-C) well beyond its normal anatase —> rutile transformation temperature showing a phenomenon of stabilization of this phase in such mixture. An interfacial reaction mechanism that can explain the observed phenomenon of mutual phase stabilization has been discussed and implications of this result towards the use of such technique for stabilization of various polymorphous compounds in a single phase has been pointed out.
| Item Type: | Article |
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| Subjects: | Engineering Materials Crystal Chemistry, Thermodynamics, Phase Equilibria |
| Divisions: | UNSPECIFIED |
| Depositing User: | Bidhan Chaudhuri |
| Date Deposited: | 27 Nov 2013 14:15 |
| Last Modified: | 28 Feb 2016 16:43 |
| URI: | http://cgcri.csircentral.net/id/eprint/2329 |
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