The Influence of Fume Colloidal Silica on the Phase Composition of the MgO-SiO2-H2O System.

Authors :: Dandan Li
Yaowu Wie
Nan Li
Yanlong Wang
Yebing Min
Source :: Interceram: International Ceramic Review; 2012, Vol. 61, p114-116, 3p
Publication Year :: 2012
Abstract: Research on the influence of fume colloidal silica on the phase composition of the MgO-SiO<subscript>2</subscript>-H<subscript>2</subscript>O system was carried out by differential thermal analysis (DTA), thermo-gravimetric analysis (TG), X-ray diffraction (XRD) and scanning electron microscope (SEM). Experimental results indicate that MgO powder, fume colloidal silica and water can react with each other at 110 °C and a new phase consisting of gel magnesium silicate hydrate Mg<subscript>3</subscript>(Si<subscript>4</subscript>O<subscript>10</subscript>)(OH)<subscript>2</subscript> is formed. [ABSTRACT FROM AUTHOR]

Subjects :: REFRACTORY materials
SILICA gel
THERMAL analysis
MAGNESIUM silicates
SCANNING electron microscopes

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