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Phase-Relationships in the system Fe-Na-O

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Abstract

The present work deals with a study of the phase relationships in the system Fe-Na-O in the temperature range 500 to 1400 ‡C. DTA measurements were combined with X-ray diffraction and high-temperature microscopic methods to investigate phase transitions involved in the system. The oxygen partial pressures in equilibrium with the Na2O-FexO solid solutions were measured by means of the galvanic cell (-) Fe,NayFezO||ZrO2-CaO||FexO,Fe (+) in the temperature range 760 to 910 ‡C. From the results obtained in the present work, the phase diagrams of the systems FeO-Na2O, Fe3O4-Na2Fe2O4, FeO-Na2Fe2O4 have been constructed. The liquidus projections in the system FeO-Fe2O3-Na2Fe2O4 and an isothermal section of the ternary system Fe-Na-O at 595 ‡C have also been presented.

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Authors and Affiliations

  1. Jilin Ferroalloys Works, Jilin, People’s Republic of China

    W. Dai

  2. Departmentof Theoretical Metallurgy, The Royal Institute of Technology, S-100 44, Stockholm, Sweden

    S. Seetharaman (Docent) & L.-I. Staffansson (Professor)

Authors
  1. W. Dai
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  2. S. Seetharaman
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  3. L.-I. Staffansson
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Formerly on leave at the Department of Theoretical Metallurgy, The Royal Institute of Technology, Stockholm, Sweden

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Dai, W., Seetharaman, S. & Staffansson, LI. Phase-Relationships in the system Fe-Na-O. Metall Trans B 15, 319–327 (1984). https://doi.org/10.1007/BF02667335

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