Optical transmittance of AlOOH/Al2O3 porous gel preforms

Monolithic boehmite gel discs (∼1.2 cm) of 0.12 and 0.25 mm thickness were examined by DTA, TGA, measurements of surface area, pore volume, pore radius and on-line measurements of optical transmittance from room temperature (RT) to 1200°C. The optical transmittance reflects the water liberation out...

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Bibliographic Details
Published in:Journal of sol-gel science and technology 2000-05, Vol.18 (2), p.99-103
Main Authors: PACH, L, MAJLING, J, KOMARNENI, S
Format: Article
Language:English
Subjects:
Aluminum oxide
Boehmite
Chemistry
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Crystallization
Exact sciences and technology
General and physical chemistry
Phase transitions
Preforms
Transmittance
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Summary:Monolithic boehmite gel discs (∼1.2 cm) of 0.12 and 0.25 mm thickness were examined by DTA, TGA, measurements of surface area, pore volume, pore radius and on-line measurements of optical transmittance from room temperature (RT) to 1200°C. The optical transmittance reflects the water liberation out of sample discs and provides information on processes associated with the phase/microstructure changes taking place such as the crystallization of the α-alumina grains.
ISSN:0928-0707
1573-4846
DOI:10.1023/A:1008786617134