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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Structural study of Ca-Mg and K-Mg mixing in silicate glasses by neutron diffraction
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Structural study of Ca-Mg and K-Mg mixing in silicate glasses by neutron diffraction

机译：中子衍射法研究硅酸盐玻璃中钙镁和钾镁混合的结构

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摘要

Neutron diffraction has been used to study the structure in two series of xCaO~.(2 - x)MgO~.2SiO_2 and xK_2O ~.(2 - x)MgO~.4SiO_2 glasses and the effect of Ca-Mg and K-Mg mixing, showing a different chemical dependence of the structure of these mixed glasses. The data are consistent with a random mixing of CaSiO_3 and MgSiO_3 structures for the Ca/Mg substitution. The coordination of Ca and Mg remains constant in Ca-Mg silicate glasses but a decrease of Mg coordination is observed in the K-Mg silicate glasses with the addition of K_2O. In these latter glasses, the medium range order is also significantly affected by the K/Mg substitution, due to the distinct structural role played by K and Mg in these glasses.
机译：中子衍射已用于研究xCaO〜。（2-x）MgO〜.2SiO_2和xK_2O〜。（2-x）MgO〜.4SiO_2两大系列玻璃的结构以及Ca-Mg和K-Mg的影响混合，显示了这些混合玻璃结构的不同化学依赖性。数据与CaSiO_3和MgSiO_3结构用于Ca / Mg替代的随机混合相一致。 Ca-Mg硅酸盐玻璃中Ca和Mg的配位关系保持不变，但是在添加K_2O的情况下，在K-Mg硅酸盐玻璃中观察到Mg配位率降低。在后一种玻璃中，由于K和Mg在这些玻璃中所起的独特的结构作用，中程顺序也受到K / Mg替代的显着影响。

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