ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 38, (3) 133 - 136 (1994)


THE EFFECTS OF THE NATURE AND CONCENTRATIONS OF α-Al₂O₃ PRECURSORS ON SIMULTANEOUS SILICA-ALUMINA TRANSFORMATIONS
 
Lomic Gizela 1, Kiš Erne 1, Putanov Paula 2
 
1 University of Novi Sad, Faculty of Technology, Novi Sad, Bulevar Cara Lazara 1, 21000 Novi Sad, Yugoslavia
2 The Serbian Academy of Science and Arts, Knez Mihajlova 35, 11000 Belgrade, Yugoslavia

Keywords: Precursors of α-Al₂O₃, Hedvall effect, Topotactical effect, Phase transformations, Silica - alumina crystallization
 

The effect of heating on the phase transformations in binary mixtures of amorphous SiO₂ and different precursors of α-Al₂O₃; (gibbsite, boehmite and γ-Al₂O₃) at the temperature of 1000 °C was studied. The influence of alumina precursors on the phase transformations has been explained by their thermal history.


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