한국표면공학회지 (Journal of the Korean institute of surface engineering)

  • 제27권3호
  • /
  • Pages.123-133
  • /
  • 1994
  • /
  • 1225-8024(pISSN)
  • /
  • 2288-8403(eISSN)
한국표면공학회 (The Korean Institute of Surface Engineering)
권호 표지

스테인레스강의 스케일 형성에 관한 연구

A study on the formation of oxide scale on the stainless steels at high temperature

  • 손일령 (충남대학교 공과대학 재료공학과) ;
  • 김길무 (충남대학교 공과대학 재료공학과)
  • Son, I.R. (Dept. of Materials Engineering, Chungnam National Univ.) ;
  • Kim, G.M. (Dept. of Materials Engineering, Chungnam National Univ.)
  • 발행 : 1994.06.01
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초록

Oxidation behavior of STS 304 and 430, produced by POSCO, Korea, was studied in order to study the surface defects formed during manufacturing processes. Oxidation experiments were carried out in a preheat-ed furnace at 850~$1, 250^{\circ}C$ in air and in a simulated coke oven gas(COG) atmosphere. The reaction products were examined by XRD, SEM and EDX on their surfaces and cross sections. Protective $Cr_2O_3$-primary oxide film was formed initially, but at critical point this film was broken and a duplex scale consisting of $Fe_2O_3$- and Fe$Cr_2O_4$- was formed. It was more severely attacked in a simulated COG atmosphere than in air, and STS 304 was superior to STS 430 in oxidation resistance.

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