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Crystallization Behavior Of Hybrid Premullite Powders Synthesized By Sol-Gel Method (CROSBI ID 496964)

Prilog sa skupa u zborniku | izvorni znanstveni rad

Macan, Jelena ; Ivanković, Hrvoje ; Tkalčec, Emilija Crystallization Behavior Of Hybrid Premullite Powders Synthesized By Sol-Gel Method // Conference Proceedings MATRIB 2004 / Grilec, Krešimir (ur.). Zagreb: Hrvatsko društvo za materijale i tribologiju (HDMT), 2004. str. 158-163-x

Podaci o odgovornosti

Macan, Jelena ; Ivanković, Hrvoje ; Tkalčec, Emilija

engleski

Crystallization Behavior Of Hybrid Premullite Powders Synthesized By Sol-Gel Method

Hybrid premullite powders of stoichiometric composition (Al:Si = 3:1) were prepared by sol-gel process, making use of Al(NO_3)_3x9H_2O and Si(OC_2H_5)_4 (TEOS) as precursors. The quantity of water in the gelling system was systematically modified to influence the mechanism of hydrolysis and condensation reactions, either by adding water, or by previous drying of Al(NO_3)_3x9H_2O. The crystallization behavior of premullite powders was investigated by combined differential scanning calorimetry and thermogravimetric analysis (DSC/TGA) and X-ray diffraction (XRD). It was found that quantity of water present during the synthesis of the premullite powders significantly influences their subsequent crystallization behavior, and accordingly their structure. This is the result of the tendency of aluminum to form complex polymeric structures in aqueous solutions. Therefore it is possible to control the crystallization behavior of the premullite sol-gel powders through quantity of added water.

mullite; sol-gel; crystallization

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Podaci o prilogu

158-163-x.

2004.

objavljeno

Podaci o matičnoj publikaciji

Conference Proceedings MATRIB 2004

Grilec, Krešimir

Zagreb: Hrvatsko društvo za materijale i tribologiju (HDMT)

Podaci o skupu

MATRIB 2004, Materials, Tribology, Processing

poster

23.06.2004-25.06.2004

Vela Luka, Hrvatska

Povezanost rada

Kemijsko inženjerstvo