Abstract
Phase equilibrium data, obtained by using the quenching technique, are presented for the system iron oxide‐A12O3 in air and at 1 atm. O2 pressure in the temperature interval 1085° to 1725°C. Stability ranges of the various phases are delineated, and approximate compositions of crystalline and liquid phases are determined. Special attention is focused on the phase Fe2O3·A12O3(ss) and its stability relationships.

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