News Academy of Engineering Sciences A.M. Prokhorov Annotation << Back Obtaining of strontium-aluminium-silicate glass -ceramic with high homogeneity V.F. Solinov N.Ju. Mikhailenko T.B. Shelaeva In this work, the influence of mechanical activation of the glass batch on the process of glass melting and homogeneity of the resulting glass, was considered. As the object of research was selected the glass with composition 40 wt.% SiO2, 30 wt.% Al2O3, 20 wt.% SrO and 10 wt.% TiO2, characterized by a high refractoriness. Mechanical activation of the glass batch was carried out by fine grinding in a planetary mill. Specific surface area of the obtained powder was 0.9 m2/g. It was shown that the processes of silicate formation and glass formation in the activated glass batch is shifted towards lower temperatures is about of 100–150 °C. This helps to reduce the temperature of the glass melting on 50–100 °C. The homogeneity of the glass, obtained from activated and non-activated glass batch, was determined by evaluating the uniformity of crystallization of bulk samples. In the glass, obtained from non-activated glass batch, the crystallization process was observed non-uniform change in color and transparency. This indicates the presence of chemical heterogeneities with the size of hundreds micrometers. On the contrary, change the color and transparency of the glass obtained from the activated glass batch was uniform. It indicates the uniform distribution of crystalline phase. This is possible only under condition of high homogeneity of the original glass. Thus, the mechanical activation of glass batch provides a more homogeneous glass than the glass batch with traditional particle size. Keywords: mechanical activation, strontium-aluminium-silicate glass-ceramics, glass batch, fine grinding Contacts: Е-mail: glas@rctu.ru Pp. 43-47.