Abstract
The phase equilibria of Fe-Ni-X-O (X = Mg, Al) systems, including their lower-order systems, at temperatures between 1200 °C and 1600 °C in air in the subsolidus region, have been experimentally studied. In the present study, the ‘Fe2O3’-MgO, ‘Fe2O3’-Al2O3, and NiO-Al2O3 binary phase diagrams, as well as the ternary phase diagrams in the Fe-Ni-Mg-O and Fe-Ni-Al-O systems projected onto the Fe-Mg-Ni and Fe-Al-Ni planes, have been constructed. Differences have been found between the present measurements, the previously published data, and the FactSage predictions, especially in the lower-order systems. It is suggested that the improved experimental techniques used in the present study, which involve carefully planned equilibration procedures followed by electron probe X-ray microanalyses (EPMA), provide more accurate and precise measurements of the phase boundaries and phase compositions.
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Acknowledgments
The authors thank the Australian Research Council and the BHP Billiton Yabulu refinery at Townsville, Australia, for their financial support for this research (Grant No. ARC LP0562201), which was undertaken under the auspices of the Australian Research Council Linkage program.
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Rhamdhani, M., Hidayat, T., Hayes, P. et al. Subsolidus Phase Equilibria of Fe-Ni-X-O (X = Mg, Al) Systems in Air. Metall Mater Trans B 40, 25–38 (2009). https://doi.org/10.1007/s11663-008-9213-z
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DOI: https://doi.org/10.1007/s11663-008-9213-z