Phase diagram study of Fe-Zn intermetallics

Abstract

There are various intermetallic compounds in the Fe-Zn system. The phase diagram of this system is very important for understanding the surface structure of zinc-coated steel; therefore, equilibrium phases and their stable compositions must be known. The bulk samples of the Fe-Zn binary intermetallic compounds were synthesized by lengthy heat treatment for over 7.2×105 s at 450 °C after 1.7×105 s at 850 °C. The X-ray diffraction (XRD) patterns of samples kept for various periods at 450 °C were observed to determine the optimal heat treatment period, and the sample of Θ1, which requires the longest time to form of all of the Fe-Zn binary intermetallic compounds, was obtained by the 7.2×105 s heat treatment. Chemical composition of the samples was examined and X-ray diffraction was applied to ensure the formation of the intermetallic compounds. The results were in agreement with the literature on the Fe-Zn binary phase diagram.

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Mita, K., Ikeda, T. & Maeda, M. Phase diagram study of Fe-Zn intermetallics. JPE 22, 122 (2001). https://doi.org/10.1361/105497101770338978

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Keywords

  • Intermetallic Compound
  • Galvanize Steel
  • Phase Diagram Study
  • Galvanize Steel Sheet
  • Equilibrium Phase Relation