Liquidus Curves for Aluminum Cell Electrolyte

Liquidus curves have been determined from cooling curves and by sampling melts saturated with alumina. The latter technique was used to redetermine the alumina‐rich liquidus of the binary system and yielded a eutectic point at and 962°C. The binary systems of with , , and gave respectively: eutectic point at and 716°C; pseudobinary eutectic point at and 924°C; and a minimum melting point at and 945°C. (Compositions are given in weight per cent). Diagrams are given for , , and the ‐rich side of the systems , , , , and .