Abstract
The MgCl 2- KCl binary phase diagram has been redetermined experimentally by cooling curve analysis. It has three eutectics— at 427 °C (31 mol% MgCl2), at 426 °C (35 mol% MgCh), and at 470 °C (57 mol% MgCl2)— and two congruently melting compounds— K2MgCl4 at 428 °C (33 mol% MgCl2) and KMgCl3 at 488.5 °C (50 mol% MgCl2). Aperitecticof K3Mg2Cl7 was found at 440 °C (36 mol % MgCl2). Another phase change, for which we have not been able to offer a satisfactory explanation, was found at 424 °C in the 40 to 50 mol% MgCl2 region.
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West Instruments, Mark IV Instruments Ltd., The Hyde, Brighton, E. Sussex, BN2 4JU, UK; or East Greenwich, RI02818-0962, USA.
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Perry, G.S., Fletcher, H. The magnesium chloride-potassium chloride phase diagram. JPE 14, 172–178 (1993). https://doi.org/10.1007/BF02667805
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DOI: https://doi.org/10.1007/BF02667805