Corrosion Science and Technology

  • 제9권2호
  • /
  • Pages.98-103
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  • 2010
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  • 1598-6462(pISSN)
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  • 2288-6524(eISSN)
한국부식방식학회 (The Corrosion Science Society of Korea)
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Corrosion Behavior of a High-Manganese Austenitic Alloy in Pure Zinc Bath

  • Yi, Zhang (School of Materials Science and Engineering, University of Science and Technology) ;
  • Liu, Junyou (School of Materials Science and Engineering, University of Science and Technology) ;
  • Wu, Chunjing (School of Materials Science and Engineering, University of Science and Technology)
  • 투고 : 2009.07.27
  • 심사 : 2010.04.08
  • 발행 : 2010.04.01
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초록

In order to further reduce the cost without reducing the corrosion resistance, a high-manganese austenitic alloy for sink roll or stabilizer roll in continuous hot-dip coating lines was developed. A systematic study of corrosion behavior of the high-manganese austenitic alloy in pure zinc bath at $490^{\circ}C$ was carried out. The results shows that, the high-manganese austenitic alloy shows better corrosion resistance than 316L steel. The corrosion rate of the high-manganese austenitic alloy in pure zinc bath is calculated to be approximately $6.42{\times}10^{-4}g{\cdot}cm^{-2}{\cdot}h^{-1}$, while the 316L is $1.54{\times}10^{-3}g{\cdot}cm^{-2}{\cdot}h^{-1}$. The high-manganese austenitic alloy forms a three-phase intermetallic compound layer morphology containing ${\Gamma$}, ${\delta}$ and ${\zeta}$ phases, while the 316L is almost ${\zeta}$ phase. The ${\Gamma}$ and ${\delta}$ phases of the high-manganese austenitic alloy contain about 8.5 wt% Cr, the existence of Cr improve the stabilization of phases, which slow down the reaction of Fe and Zn, improve the corrosion resistance of the high-manganese austenitic alloy. So substitute the nickel with the manganese to manufacture the high-manganese austenitic alloy of low cost is feasible.

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참고문헌

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