Abstract
The corrosion resistance of the IN-800superalloy in contact with a molten mixture of (52-48)mol.% PbCl2-KCl, similar to that found inwaste-incineration plants, has been studied. Thecorrosion kinetics have been analyzed using continuous-currentelectrochemical techniques and electrochemical-impedancespectroscopy (EIS). Studies were performed to determinethe influence of temperature and of the presence of carbon in the salt on the corrosion rate.Scanning electron microscopy (SEM) and electron probemicroanalysis (EPMA) were used as additional techniquesto analyze the corrosion products in order to elucidate the corrosion mechanism.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
G. D. Smith and P. Ganesan, Proc. Conf. Heat Resisting Materials II, Gatlinburg, TN, 11–14 Sept. (1995), p. 631.
P. G. H. Mcllhone, K. A. Lichti, and W. Gao, Electr. Mech. Chem. Eng. 22, 22 (1995).
B. Wallén, A. Bergquist, and J. Nordströn, ACOM, 1, 1 (1996).
G. Y. Lai, High Temperature Corrosion of Engineering Alloys (ASM, 1990).
G. Y. Lai, Proc. Conf. Chemical Waste Incineration, Manchester, 12–13 March (1990).
P. Elliot, Mater. Perform. 32, 821 (1993).
G. Y. Lai and G. Sorell, eds., Materials Performance in Waste Incineration System (NACE, Houston, TX, 1991).
H. J. Grabke, E. Reese, and M. Spiegel, Corros. Sci. 37, 1023 (1995).
U. Brill, W. R. Herda, and D. C. Agarwal, Adv. Mater. Process. 148, 42 (1995).
J. Klöwer, Proc. Conf. Heat Resisting Materials II, Gatlinburg, TN, 11–14 Sept. (1995), pp. 245–252.
J. P. T. Vossen, J. H. W. de Wit, L. Plomp, and G. Rietveld, J. Electrochem. Soc. 142, 3327 (1995).
J. L. Blough, W. T. Bakker, M. Krawchuck, G. J. Stanko, W. Wolowodiuk, and J. Brooks, Proc. Conf. Heat Resisting Materials II, Gatlinburg, TN, 11–14 Sept. (1995), p. 259.
E. Otero, A. Pardo, F. J. Pérez, M. V. Utrilla, and T. Levi, Oxid. Met. 49, 467 (1998).
ASTM G 59–78, Standard Practice for Conducting Potentiodynamic Polarization Resistance Measurements.
ASTM G 102–89, Standard Practice for Calculation of Corrosion Rates and Related Information from Electrochemical Measurements.
F. Mansfeld, Corrosion 36, 301 (1981).
K. Hldaky, L. M. Callow, and J. L. Dawson, Brit. Corros. J. 15, 20 (1980).
L. M. Callow, J. A. Richardson, and J. L. Dawson, Brit. Corros. J. 11, 123 (1976).
I. Epelboin and M. Keddam, J. Electrochem. Soc. 117, 1052 (1970).
R. D. Armstrong and H. R. Thirsk, Electrochim. Acta. 17, 171 (1972).
I. Epelboin, J. Keddam, and H. Takenouti, J. Appl. Electrochem. 2, 71 (1972).
Rights and permissions
About this article
Cite this article
Otero, E., Pardo, A., Merino, M.C. et al. Corrosion Behavior of IN-800 Superalloy in Waste-Incineration Environments: Hot Corrosion by Molten Chlorides. Oxidation of Metals 51, 507–525 (1999). https://doi.org/10.1023/A:1018895312069
Issue Date:
DOI: https://doi.org/10.1023/A:1018895312069