Abstract
The influence of pre-oxidation on the corrosion and mechanical strength of Fe–25Cr and Fe–25Cr–20Ni alloys was investigated in N2–0.1SO2 at 973 K with and without mechanical loadings. About 0.1μm-thick Cr2O3 scales formed on the Fe–25Cr alloy by pre-oxidation in Ar. However, spinel oxides of (Fe,Cr)3O4 remained on the Cr2O3 and voids formed at the oxide/metal interface on Fe–25Cr–20Ni after pre-oxidation in Ar. The preformed oxides are very effective in preventing corrosion of the alloy surfaces. The preformed oxides are also beneficial to increase the strength of the alloys in corrosive environments. The effects of pre-oxidation on Fe–25Cr are stronger than those of Fe–25Cr–20Ni due to the different characteristics of the preformed oxides.
Similar content being viewed by others
References
Singh P., and Birks N., (1983) Oxidation of Metals 19(1/2): 37
Lobnig R. E., and Grabke H. J., (1990) Corrosion Science 30(10): 1045
Ohla K., Kim S. W., Fischmeister H. and Fromm E., (1991) Oxidation of Metals 36(5/6): 379
Kim S. W., Ohla K., Fischmeister H., and Fromm E., (1991) Oxidation of Metals 36(5/6): 395
Stroosnijder M. F., Guttmann V., Buscail H., and de Wit J. H. W., (1994) Corrosion. Science., 36(2): 207
Zeng X. G., and Young D. J., (1996) Corrosion Science 38(11): 1877
Sohn I. R., and Narita T., (2003) Oxidation of Metals 59(3/4): 333
Sohn I. R., and Narita T., (2003) Oxidation of Metals 59(3/4): 353
I. R. Sohn, and T. Narita, Oxidation of Metals submitted for publication
Wood G. C., Hodgkiess T., and Whittle D. P., (1966) Corrosion. Science 6: 129
Rapp R. A., (1984) Metallurgical Transactions A 15A(5): 765
Mikkelsen L., and Linderoth S., (2003) Materials science and Engineering A 361(1–2): 198
I. R. Sohn, and T. Narita, (to be published)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sohn, I.R., Narita, T. Influence of Pre-oxidation on the Corrosion and Mechanical Strength of Fe–25Cr and Fe–25Cr–20Ni Alloys at 973 K. Oxid Met 65, 181–194 (2006). https://doi.org/10.1007/s11085-006-9011-4
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11085-006-9011-4