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Corrosion of Carbon Steel with and without Aluminized Coating in (O, S, H)-containing Gases at 500-800℃

  • Lee, Dong Bok (School of Advanced Materials Science & Engineering, Sungkyunkwan University) ;
  • Abro, Waheed Ali (Department of Earth Resources and Environmental Engineering, Hanyang University) ;
  • Lee, Kun Sang (Department of Earth Resources and Environmental Engineering, Hanyang University) ;
  • Abro, Muhammad Ali (School of Advanced Materials Science & Engineering, Sungkyunkwan University)
  • Received : 2017.04.17
  • Accepted : 2017.04.24
  • Published : 2017.04.30

Abstract

The carbon steel formed the thick, somewhat porous, loosely adherent iron oxide scale when oxidized at $500-800^{\circ}C$ for 15 h in air. It formed the thicker, more porous, nonadherent scale consisting of FeS plus iron oxides in $Ar/1%SO_2$-mixed gas. It formed the much thicker, more porous, nonadherent scale consisting of FeS plus iron oxides in Ar/0.1% $H_2S$-mixed gas. However, the aluminized carbon steel formed the thin, protective $Al_2O_3$ surface scale even in $Ar/1%SO_2$-, and $Ar/0.1%H_2S$-mixed gas. Aluminizing drastically improved the corrosion resistance in (O, S, H)-containing gas.

Acknowledgement

Grant : Development of the High-Efficiency Low-Emission Future Energy Production Technology

Supported by : National Research Council of Science & Technology (NST)

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