Hot Corrosion Monitoring of Waste Incineration Corrosion Processes Using Electrochemical Techniques

Abstract:

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In order to evaluate the damage of molten salt mixtures in waste incineration environments, the alloy 625 was exposed to a molten KCl-ZnCl2 mixture at 650 °C for 200 hours. The corrosion process was monitored by electrochemical impedance spectroscopy (EIS). After exposure the corrosion products were analyzed by X-ray diffraction and SEM. Two different electrochemical impedance models were found to describe the electrochemical processes. In the early stages of corrosion the alloy developed a protective Cr2O3 scale which turned into a porous spinel oxide scale after 100 hours.

Info:

Periodical:

Materials Science Forum (Volumes 522-523)

Edited by:

Shigeji Taniguchi, Toshio Maruyama, Masayuki Yoshiba, Nobuo Otsuka and Yuuzou Kawahara

Pages:

531-538

DOI:

10.4028/www.scientific.net/MSF.522-523.531

Citation:

F.J. Pérez et al., "Hot Corrosion Monitoring of Waste Incineration Corrosion Processes Using Electrochemical Techniques", Materials Science Forum, Vols. 522-523, pp. 531-538, 2006

Online since:

August 2006

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Price:

$35.00

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