Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Critical Pitting Temperature of 2205 Duplex Stainless Steels Using Immersion and Electrochemical Polarization Test Methods

침지시험법 및 전기화학적 분극법에 의한 2205 이상 스테인리스강의 임계공식온도 측정 비교

  • Shin Jae-Ho (School of Advanced Materials Engineering, Kookmin University) ;
  • Lee Jae-Bong (School of Advanced Materials Engineering, Kookmin University)
  • 신재호 (국민대학교 신소재공학부) ;
  • 이재봉 (국민대학교 신소재공학부)
  • Published : 2006.02.01
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Abstract

Although stainless steels have the excellent corrosion resistance by passive film, they are susceptible to pitting corrosion in the environment containing halogen elements such as chloride ions. The resistance to pitting corrosion can be evaluated by measuring the critical pitting temperature (CPT). CPT values can be obtained using immersion, potentiodynamic and potentiostatic polarization test methods. Results on duplex 2205 stainless steels showed that CPT values were measured as $50^{\circ}C,\;55^{\circ}C\;and\;61^{\circ}C$, respectively for immersion, potentiodynamic and potentiostatic polarization test methods, depending upon the different test methods, even though the difference between CPT values are not much.

Keywords

References

  1. R. J. Brigham, E. W. Tozer, Corrosion, 29 (1973) 33 https://doi.org/10.5006/0010-9312-29.1.33
  2. S. Bernhardsson, R. Mellstrom, B. Bro, Proc. Corrosion/80-NACE, Chicago, Paper No. 85 (1980)
  3. R. Qvarfort, Corros. Sci., 28 (1988) 135 https://doi.org/10.1016/0010-938X(88)90090-X
  4. P. C. Pistorius, G. T. Burstein, Corros. Sci., 36 (1994) 525 https://doi.org/10.1016/0010-938X(94)90041-8
  5. G. T. Burstein, D. H. Davies, Corros. Sci., 20 (1980) 1143 https://doi.org/10.1016/0010-938X(80)90145-6
  6. P. E. Arnvig, A. D. Bisgard, Proc. Corrosion /96+NACE, Denver, Paper No. 437 (1996)
  7. KS D 0219, '스테인리스강의 염화 제 2철 부식 시험 방법' (1993)
  8. ASTM G 48-00, 'Standard Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution', 191 (2000)
  9. ASTM G 150-99, 'Standard Test Methods for Electrochemical Critical Pitting Temperature Testing of Stainless Steels', 638 (1999)
  10. P. E. Arvnig, R. M. Davision, Proc. 12'th lnt. Corrosion Congr., Houston, TX, September 19-24, Paper No. 209. (1993)
  11. R. F. A. Jargelius-Pettersson, Corros. Sci., 41 (1999) 1639 https://doi.org/10.1016/S0010-938X(99)00013-X
  12. D. A. Jones, 'Principles and Prevention of Corrosion', 2nd ed., Prentice-Hall. Inc. (1996)