Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-28T05:05:26.784Z Has data issue: false hasContentIssue false
  • English
  • Français

Determination of Crevice Corrosion Susceptibility of Alloy 22 Using Different Electrochemical Techniques

Published online by Cambridge University Press:  01 February 2011

Mauricio Rincon Ortiz ,
Martín A. Rodríguez ,
Ricardo M. Carranza  and
Raul B. Rebak
Mauricio Rincon Ortiz
Affiliation:
[email protected], Comsion Nacional de Energía Atómica, Materiales, Av. Gral. Paz 1499, San Martín, Buenos Aires, B1650KNA, Argentina, 54-11-6772-7270, 54-11-6772-7362
Martín A. Rodríguez
Affiliation:
[email protected], Argentina
Ricardo M. Carranza
Affiliation:
[email protected]@gmail.com, Comsion Nacional de Energía Atómica, Materiales, Av. Gral. Paz 1499, San Martín, Buenos Aires, B1650KNA, Argentina, 54-11-6772-7270, 54-11-6772-7362
Raul B. Rebak
Affiliation:
[email protected], GE Global Research, 1 Research Circle, CEB2505, Schenectady, New York, 12309, United States, 518-387-4311
Get access

Abstract

Alloy 22 belongs to the Ni-Cr-Mo family and it is highly resistant to general and localized corrosion. It may suffer crevice corrosion in aggressive environmental conditions. This alloy has been considered as a corrosion-resistant barrier for high-level nuclear waste containers. It is assumed that localized corrosion may occurs when the corrosion potential (ECORR) is equal or higher than the crevice corrosion repassivation potential (ER,CREV). The latter is measured by means of different electrochemical techniques using artificially creviced specimens. These techniques include cyclic potentiodynamic polarization (CPP) curves, Tsujikawa-Hisamatsu electrochemical (THE) method or other non-standard methods, such as the PD-GS-PD technique.

The aim of the present work was to determine reliable critical or protection potentials for crevice corrosion of Alloy 22 in pure chloride solutions at 90°C. Conservative methodologies (which include extended potentiostatic steps) were applied for determining protection potentials below which crevice corrosion cannot initiate and propagate. Results from PD-GS-PD technique were compared with those from these methodologies in order to assess their reliability. Results from the CPP and the THE methods were also considered for comparison. The repassivation potential resulting from the PD-GS-PD technique was conservative and reproducible, and it did not depend on the amount of previous crevice corrosion propagation.

Keywords

Nialloycorrosion
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1265: Symposium AA – Scientific Basis for Nuclear Waste Management XXXIV , 2010 , 1265-AA09-10
Copyright
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Rebak, R. B. in Corrosion and Environmental Degradation, Vol. II, Wiley-VCH, Weinheim, Germany (2000).Google Scholar
2 Asphahani, A. I., The Arabian Journal of Science and Engineering, Vol. 14, p. 317 (1989).Google Scholar
3 Gordon, G. M., Corrosion, Vol. 58, N° 10, p. 811 (2002).Google Scholar
4 Szklarska-Smialowska, Z., Pitting and Crevice Corrosion of Metals, NACE Intl. Houston TX, (2005).Google Scholar
5 Carranza, R. M., Rodríguez, M. A. and Rebak, R. B., Paper N° 08579, Corrosion/08, NACE Intl., Houston, TX (2008).Google Scholar
6 Evans, K. J., Yilmaz, A., Day, S. D., Wong, L. L., Estill, J. C. and Rebak, R. B., Journal of Metals, p. 56 (January 2005).Google Scholar
7 Dunn, D. S., Pan, Y.-M., Chiang, K., Yang, L., Cragnolino, G. A. and He, X., Journal of Metals, p. 49 (January 2005).Google Scholar
8 Dunn, D. S. and Brossia, C. S., Paper 02548, Corrosion/2002, NACE Intl., Houston, TX (2002).Google Scholar
9 Ilevbare, G. O., King, K. J., Gordon, S. R., Elayat, H. A., Gdowski, G. E. and Gdowski, T. S. E., Journal of The Electrochemical Society, Vol. 152/12, p. B547 (2005).Google Scholar
10 Carranza, R. M., M. A. Rodríguez and Rebak, R. B., Corrosion, Vol. 63, p. 480 (2007).Google Scholar
11 Kehler, B. A., Ilevbare, G. O. and Scully, J. C., Corrosion, Vol. 57, p. 1042 (2001).Google Scholar
12 He, X., Brettmann, B. and Jung, H., Corrosion, Vol. 65, p. 449 (2009).Google Scholar
13 Evans, K. J. and Rebak, R. B., Journal of ASTM Intl., Vol. 4, Paper ID JAI101230 (2007).Google Scholar
14 Dunn, D. S., Pan, Y.-M., Yang, L., Cragnolino, G. A., Corrosion, Vol. 61, p. 1078 (2005).Google Scholar
15 Mishra, A. K. and Frankel, G. S., Corrosion, Vol. 64, p. 869 (2008).Google Scholar
16 Annual Book of ASTM Standards, vol. 03.02 (West Conshohocken, PA: ASTM Intl., 2005).Google Scholar
17 Rodríguez, M. A., Carranza, R. M. and Rebak, R. B., Corrosion, Vol 66, p. 015007–1 (2010)Google Scholar
18 Carranza, R. M., Rodríguez, M. A. and Rebak, R. B. in Scientific Basis for Nuclear Waste Management XXXII, edited by Hyatt, N. C., Pickett, D. A. and Rebak, R. B., Mater. Res. Soc. Symp. Proc. Vol. 1124, Warrendale, PA, MRS Paper 1124–Q09 (2009).Google Scholar
19 Yilmaz, A., Pasupathi, P. and Rebak, R. B., Paper PVP2005-71174, ASME Pressure Vessels and Piping Conference, 17–21 July 2005, CO, Denver, ed. ASME, New York, NY (2005).Google Scholar