溶融アルカリ金属珪酸塩の構造

概要

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X-ray diffraction measurements were made on the binary silicate systems Li_2O-SiO_2, Na_2O-SiO_2, and K_2O-SiO_2 in the molten and glassy states. From these results, the following facts were quantitatively confirmed ; X-ray diffraction patterns of alkali metal silicates in the molten state are similar to those in the glassy state. Molten alkali metal silicates mainly consist of SiO_4 tetrahedral units up to the present experimental composition range i.e., 60 mol% alkali metal oxides. Namely the structural change in the fundamental units due to the addition of alkali metal oxides is not severe. These SiO_4 tetrahedral units, however, distribute randomly with increasing the addition of alkali metal oxides. This is confirmed in the short range order parameter estimated from the pair correlation function.
社団法人日本鉄鋼協会の論文
1976-10-01