Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Analysis of the Effects of Ti, Si, and Mo on the Resistance to Corrosion and Oxidation of Fe-18Cr Stainless Steels by Response Surface Methodology

반응표면분석법을 활용한 Fe-18Cr 스테인리스강의 부식 및 산화 저항성에 미치는 Ti, Si, Mo의 영향 분석

  • Jang, HeeJin (Department of Metallurgical and Materials Engineering, Chosun University) ;
  • Yun, Kwi-Sub (School of Materials Science and Engineering, Chonnam National University) ;
  • Park, Chan-Jin (School of Materials Science and Engineering, Chonnam National University)
  • 장희진 (조선대학교 금속재료공학과) ;
  • 윤귀섭 (전남대학교 신소재공학부) ;
  • 박찬진 (전남대학교 신소재공학부)
  • Received : 2010.02.19
  • Published : 2010.08.22
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Abstract

We studied the corrosion and oxidation properties of Fe-18Cr-0.4Nb-(0.1~0.6)Ti-(1~3)Si-(0.5~2)Mo stainless steel. The resistance to general and pitting corrosion was evaluated and the results were analyzed by Response Surface Methodology (RSM) as a function of alloy composition. The effects of alloy composition and heat treatment on the oxidation resistance were also examined. Mo increased both general corrosion resistance and pitting corrosion resistance. Si improved the resistance of the alloys to pitting corrosion. Si was also beneficial for general corrosion resistance of the alloys containing Mo at more than 1 wt.%. However, Mo was detrimental when its content was lower. Effects of Ti on general corrosion properties appeared to be weak and a high concentration of Ti appeared to deteriorate pitting resistance. The thickness of the oxidation scale increased and adhesion of the scale worsened as the temperature increased from $800^{\circ}C$ to $900^{\circ}C$. Weight gain of the alloys due to oxidation at $900^{\circ}C$ clearly showed that the resistance to oxidation is improved by annealing at $860^{\circ}C$ and an increase of Si content.

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References

  1. Y. D. Lee, Corros. Sci. and Tech. 31, 198 (2002).
  2. A. John Sedriks, 2nd ed., Corrosion of Stainless Steels, John Wiley & Son INC (1996).
  3. A. Pardo, M. C. Merino, A. E. Coy, F. Viejo, M. Carboneras, and R. Arrabla, Acta Mater. 55, 2239 (2007). https://doi.org/10.1016/j.actamat.2006.11.021
  4. M. A. Ameer, A. M. Fekry, and F. El-Taib Heakal, Electrochim. Acta 50, 43 (2004). https://doi.org/10.1016/j.electacta.2004.07.011
  5. A. Pardo, M. C. Merino, A. E. Coy, F. Viejo, R. Arrabal, and E. Matykina, Corros. Sci. 50, 1796 (2008). https://doi.org/10.1016/j.corsci.2008.04.005
  6. D.-Y. Lin and T.-C. Chang, Mater. Sci. Eng. A359, 396 (2003).
  7. S. B. Lee, Example-driven Design of Experiments, ERETEC INC (2008).
  8. D. C. Yang, I. S. Jang, M. H. Jang, C. N. Park, C. J. Park, and J. Choi, Met. Mater. Int. 15, 421 (2009). https://doi.org/10.1007/s12540-009-0421-0
  9. H. J. Jang, W. J. Beom, and C. J. Park, J. of Kor. Inst. Surf. Eng. 42, 79 (2009). https://doi.org/10.5695/JKISE.2009.42.2.079
  10. J. M. Francis and J. A. Jutson, Mat. Sci. Eng. 4, 84 (1969). https://doi.org/10.1016/0025-5416(69)90047-0