Abstract

The phase diagram of the SrF₂–MgF₂ system has been studied by differential thermal analysis (DTA) and X-ray powder diffraction (XRD). The stability area of the compound SrMgF₄ is very small, and its extent is about 20°С between 870 and 890°С. The formation of compounds by magnesium fluoride and strontium fluoride with other metal fluorides is considered in the M versus X coordinates, where M is the cumulative moment of the cation and X is the cation electronegativity. Two areas of compound formation were identified for each of the fluorides. Magnesium and strontium fluorides are amphoteric compounds in terms of the Lewis acid and base theory.

中文翻译：

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MgF2-SrF2 体系的相图以及氟化镁和氟化锶与其他氟化物的相互作用

摘要

通过差热分析(DTA)和X射线粉末衍射(XRD)研究了SrF ₂ -MgF _{2体系的相图。}化合物SrMgF ₄的稳定区域很小，其范围在870至890°С之间约20°С。氟化镁和氟化锶与其他金属氟化物形成的化合物在M与X坐标中考虑，其中M是阳离子的累积矩，X是阳离子电负性。每种氟化物都确定了两个化合物形成区域。根据路易斯酸碱理论，氟化镁和氟化锶是两性化合物。