The effects of fluorine and nitrogen substitution for oxygen in aluminosilicate glasses, effectively oxyfluoronitride (OFN) glasses, modified by calcium, calcium–yttrium or calcium–magnesium on thermal and physical/mechanical properties have been compared. Thus, 42 glasses in the Ca–(Mg)–(Y)–Si–Al–O–(N)–(F) system have been prepared and characterized with respect to density (ρ), molar volume (MV), compactness (C), free volume (FV), glass transition temperatures measured by DTA (T_g,DTA) and dilatometry (T_g,dil), dilatometric softening point (T_DS), microhardness (μHv) and Young's modulus (E). Gradients of property variation with nitrogen or fluorine substitutions for oxygen are similar for all three different oxyfluoronitride glass systems and are comparable with those reported for other OFN glasses, again indicating independent and additive effects of nitrogen and fluorine. In attempting to further understand how fluorine affects the cross-link density (CLD) in OFN glasses, it becomes apparent that it is necessary to allow for a greater contribution by aluminum in a modifier role as fluorine content is increased. This modified calculation of CLD values results in good linear fits between T_g and CLD values. This analysis clearly demonstrates and endorses the concepts that thermal properties are related to CLD while physical/mechanical properties are dependent on glass compactness.

中文翻译：

---

组成对Ca–（Mg）–（Y）–Si–Al–氧氟氮化物玻璃的交联密度的影响

比较了铝硅酸盐玻璃，经钙，钙钇或钙镁改性的有效氧氟氮化物（OFN）玻璃中的氟和氮替代氧对热和物理/机械性能的影响。因此，已经制备了42块Ca–（Mg）–（Y）–Si–Al–O–（N）–（F）系统中的玻璃，并针对密度（ρ），摩尔体积（MV），致密性进行了表征。（C），自由体积（FV），通过DTA（T _g，DTA）和膨胀计（T _g，dil）测量的玻璃化转变温度，膨胀计软化点（T _DS），显微硬度（μHv）和杨氏模量（E）。在所有三种不同的氟氧化氮玻璃体系中，氮或氟取代氧引起的性能变化梯度均相似，并且与其他OFN玻璃报告的结果相当，再次表明了氮和氟的独立和累加作用。在尝试进一步理解氟如何影响OFN玻璃中的交联密度（CLD）时，很明显，随着氟含量的增加，有必要让铝起改性剂的作用。修改后的CLD值计算可确保T _g之间的线性拟合良好和CLD值。该分析清楚地证明并认可了热性质与CLD相关，而物理/机械性质取决于玻璃紧密度的概念。