TY - JOUR
T1 - Sintering of Diphasic Mullite Gel
AU - Pach, Ladislav
AU - Iratni, Aicha
AU - Kovar, Vladimir
AU - Mankos, Peter
AU - Komarneni, Sridhar
PY - 1996
Y1 - 1996
N2 - A monolithic colloidal gel of mullite composition, prepared from SiO2 and boehmite sols, was sintered under isothermal conditions. The sintering process was studied by dilatometry, thermogravimetric analysis, bulk density measurements and discontinuous shrinkage measurements. The silica component of stoichiometric colloidal mullite gel prevented crystallization of α-Al2O3 in the system. The initial rapid part of the sintering is controlled by the alumina phase and it is not a viscous sintering process in the sense of Scherer's viscous sintering model. The final part of sintering, above approximately 80% of the theoretical density, is controlled by the silica component of the gel and agrees very well with the Scherer model.
AB - A monolithic colloidal gel of mullite composition, prepared from SiO2 and boehmite sols, was sintered under isothermal conditions. The sintering process was studied by dilatometry, thermogravimetric analysis, bulk density measurements and discontinuous shrinkage measurements. The silica component of stoichiometric colloidal mullite gel prevented crystallization of α-Al2O3 in the system. The initial rapid part of the sintering is controlled by the alumina phase and it is not a viscous sintering process in the sense of Scherer's viscous sintering model. The final part of sintering, above approximately 80% of the theoretical density, is controlled by the silica component of the gel and agrees very well with the Scherer model.
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U2 - 10.1016/0955-2219(95)00161-1
DO - 10.1016/0955-2219(95)00161-1
M3 - Article
AN - SCOPUS:0001271682
SN - 0955-2219
VL - 16
SP - 561
EP - 566
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 5
ER -