Liquidus Temperatures of KF–KCl–KI Melts

Liquidus Temperature and Electrical Conductivity of the KF–KCl–KI System Containing K2SiF6

“…The results of the study were summarized in a form of quasi-binary phase diagram ([66.6 mol % KF–33.4 mol % KCl]–75 mol % KI)–K 2 SiF 6 in the concentration range of K 2 SiF 6 up to 5 mol %. The melting point of the initial mixture [66.6 mol % KF–33.4 mol % KCl]–75 mol % KI was found to be 869 K, in agreement with the available data . The eutectic point of this diagram corresponds to 0.23 mol % K 2 SiF 6 .…”

“…These results are in good agreement with values calculated by Kohler interpolation of binary systems KF−KCl, KF−KI, and KI−KCl. Results of the work 19 are also close to the experimental values obtained in the literature 21 for the eutectic mixture KF (45 mol %) and KCl (55 mol %). The introduction of KI provides a melting temperature reduction and lower KF fraction and makes the electrolyte less aggressive toward construction materials.…”

“…At a temperature of 1023 K, the conductivity decreases from 2.51 S·cm –1 for KF–KCl melt to 1.41 S·cm –1 for KI. Thus, in comparison with KF–KCl systems, KF–KCl–KI-based melts have higher resistance and lower melting temperatures …”

“…The values of liquidus temperatures of the KF–KCl–KI system are the only available data. , Liquidus temperatures of the KF–KCl–KI system were registered by thermal analysis (TA) and synchronous thermal analysis (STA) in the literature . The ternary eutectic point with melting temperature 750 K relates to the composition (mole %) KF(25)–KCl(34)–KI(41).…”

“…19,20 Liquidus temperatures of the KF−KCl−KI system were registered by thermal analysis (TA) and synchronous thermal analysis (STA) in the literature. 19 The ternary eutectic point with melting temperature 750 K relates to the composition (mole %) KF(25)− KCl(34)−KI(41). These results are in good agreement with values calculated by Kohler interpolation of binary systems KF−KCl, KF−KI, and KI−KCl.…”