The structure of molten binary silicate systems CaO-SiO2 and MgO-SiO2
Tóm tắt
The structure of the molten binary CaO-SiO2 and MgO-SiO2 was investigated by means of a high temperature X-ray diffraction technique. From an analysis of the X-ray scattering intensity, the radial distribution function was evaluated from which interionic distances and coordination numbers were calculated. The following features emerge from these results: Molten silicates consist mainly of SiO4 tetrahedral units, up to 57 mol pct alkaline earth Met.al oxides. The number of oxygens which surround Ca and Mg at the monosilicate composition is 7 and 5 respectively. The structure of molten silicates is insensitive to temperature within the present experimental temperature range. The ionic distribution and structural changes in the molten mixture of alkaline earth silicates are also discussed.
Tài liệu tham khảo
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