【摘要】 本文应用穆斯堡尔谱、红外光谱和X射线荧光分析等方法,分别测定了碱硅酸盐玻璃中Fe³⁺、B³⁺、Al³⁺离子的配位状态,分析了它们共存时在玻璃中产生的结构效应,以及对密度上“铁-硼反常现象”的影响。 实验结果表明,Fe³⁺、B³⁺共存时,B³⁺不改变Fe³⁺的配位数,而Fe³⁺具有促使B³⁺由[BO₁]四面体转变成[BO₃]三角体的能力。实验还表明,Fe³⁺、A1³⁺、B³⁺共存而“游离”氧不足时,三种阳离子进入四配位的能力为:AP³⁺>Fe³⁺>B³⁺。更多还原

【Abstract】 The coordination states of Fe³⁺, B³⁺ and Al³⁺ ions in the silicate glasses have been determined respectively by means of Mōssbauer spectroscopy, infrared spectroscopy and fluorescence X-ray diffractometer. The structural effect induced due to the co-existance of these cations in the glasses and the influence of the iron and boric oxides anomaly on the glass density have been discussed.The results indicate that boric oxide can not change the coordination of ferric ions, and iron oxide has the ability to convert [BO₄] tetrahedron into [BO₃] trihedron in the silicate glasses containing Fe₂O₃ and B₂O₃. In the silicate glasses, in which the sum of Fe₂O₃, Al₂O₃ and B₂O₃ content is more than the alkali oxide content, the ability forming tetrahedra of these cations decreases in the order of Al³⁺→Fe³⁺→B³⁺.更多还原