Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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High-temperature Oxidation of Fe-2%Ni Alloys

Fe-2%Ni 합금의 고온 산화

  • Lee, Dong Bok (School of Advanced Materials Science and Engineering, Sungkyunkwan University) ;
  • Jung, Jae Ok (R&D Center, PIM Korea) ;
  • Park, Soon Yong (R&D Center, PIM Korea) ;
  • Cho, Gyu Chul (R&D Center, PIM Korea) ;
  • Xiao, Xiao (School of Advanced Materials Science and Engineering, Sungkyunkwan University) ;
  • Kim, Min Jung (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
  • 이동복 (성균관대학교 신소재공학부) ;
  • 정재옥 (한국피아이엠 기술연구소) ;
  • 박순용 (한국피아이엠 기술연구소) ;
  • 조규철 (한국피아이엠 기술연구소) ;
  • ;
  • 김민정 (성균관대학교 신소재공학부)
  • Received : 2018.04.10
  • Accepted : 2018.04.30
  • Published : 2018.04.30
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Abstract

Fe-2 wt.%Ni alloys were fabricated by metal powder injection molding, and their oxidation behavior at $600-700^{\circ}C$ for 30 h in air was studied in order to find the effect of the small addition of Ni in the iron matrix on the high-temperature oxidation. Oxide scales that formed after oxidation consisted primarily of $Fe_2O_3$, where microscopic voids were scattered. Nickel was segregated initially at the scale/matrix interface, and later at the lower part of the $Fe_2O_3$ scale. At $600^{\circ}C$, Fe-2wt.%Ni alloys oxidized parabolically initially, and linearly after 15 h. At $650-700^{\circ}C$, they oxidized linearly from the initial period. Although Fe-2wt.%Ni alloys oxidized slower than pure iron, their oxidation rates were relatively fast.

Keywords

References

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