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      https://www.ias.ac.in/article/fulltext/boms/043/0021

    • Keywords

       

      Oxidation; electrodeposition; composite coating; AISI 304 stainless steel; microstructure; X-ray diffraction.

    • Abstract

       

      Protective coatings can be applied to enhance the performance of interconnects in solid oxide fuel cells. In this study, AISI 304 steel was coated with a Ni–Fe$_2$O$_3$ composite to form a modified-Watt’s type electrolyte by the conventional electro co-deposition method. The characterization of the coatings before and after cyclic oxidation was performed by scanning electron microscopy and X-ray diffraction. In order to evaluate the oxidation behaviour, thermal cycling was carried out in a furnace at 850$^{\circ}$C. The results indicated that the coated steel had better oxidation resistance in comparison with the uncoated steel. After 60 cycles of oxidation, the Ni–Fe$_2$O$_3$ composite coating was converted to FeNi$_2$O$_4$, NiCrO$_4$, MnFe$_2$O$_4$ and Fe$_2$NiO$_4$. The Fe$_2$O$_3$/NiFe$_2$O$_4$ composite coating reduced the outward migration of chromium and the growth rate ofthe Cr$_2$O$_3$ layer.

    • Author Affiliations

       

      MOHSEN ABAEI1 MORTEZA ZANDRAHIMI1 HADI EBRAHIMIFAR2

      1. Department of Metallurgy and Materials Science, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman 76169-133, Iran
      2. Department of Materials Engineering, Faculty of Mechanical and Materials Engineering, Graduate University of Advanced Technology, Kerman 7631133131, Iran
    • Dates

       
  • Bulletin of Materials Science | News

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