Abstract
A complex investigation of SiO2–KF melts and products of their quenching to room temperature is performed using electrochemical measurements, quantitative X-ray diffraction analysis, and calorimetry. The structure of components in the SiO2–KF system and the specific features in their interaction are elucidated. It is revealed that, in the composition region 0–0.33 mol % SiO2, the interaction between the components is nearly ideal in character. The inference is made that the associates of silica and potassium fluoride can be formed in this system, and their approximate composition is determined. It is found that the associates are characterized by low enthalpies of formation. The results of analyzing the liquidus curve indicate a single eutectic and the absence of stoichiometric compounds in the system under investigation.
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