Study on the Phase Equilibria of the Fe-Al-Ni-O System at 750°C | Zendy

M.-H. Du | Zendy; Haifeng Mei | Zendy; Ya Liu | Zendy

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Study on the Phase Equilibria of the Fe-Al-Ni-O System at 750°C

Author(s) -

M.-H. Du,

Haifeng Mei,

Ya Liu

Publication year - 2022

Publication title -

scanning

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.359

H-Index - 47

eISSN - 1932-8745

pISSN - 0161-0457

DOI - 10.1155/2022/4188727

Subject(s) - corundum , spinel , phase diagram , alloy , oxide , materials science , phase (matter) , calphad , phase boundary , analytical chemistry (journal) , scanning electron microscope , metal , diffraction , work (physics) , metallurgy , thermodynamics , chemistry , optics , composite material , physics , organic chemistry , chromatography

Phase equilibria of the Fe-Al-Ni-O system at 750°C were determined by scanning electron microscopy coupled with energy-dispersive X-ray spectrometer and X-ray power diffraction. 54 alloys were prepared with weighted metal and Ni2O3 powder and were annealed at 750°C for 45 days. Two four-phase equilibrium regions and three three-phase equilibrium regions were confirmed, and the boundary between spinel and corundum was obtained. Comparing with the Fe-Al-Ni-O oxidation diagram at 750°C calculated with FSstel and FToxid databases, the phase boundary of the spinel and corundum oxides from experiments was inclined to the Ni-Al side. The determined relationship between primary oxides and alloy composition in this work can be used as a reference for the preparation of the oxide film by selective oxidation.

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