Journal
CORROSION SCIENCE
Volume 106, Issue -, Pages 188-207Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.02.004
Keywords
Stainless steel; Nickel; SEM; TEM; High temperature corrosion; Oxidation
Funding
- NSERC/NRCAN/AECL CRD program
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This study investigates the oxidation behavior of several stainless steels and nickel-based superalloys exposed to supercritical water at 800 degrees C for 12h. Characterization of the resulting oxide layers were conducted using weight change measurements, X-ray diffraction, scanning/transmission electron microscopy, and energy dispersive spectroscopy. Although the exposure time is only 12 h, the thickness of the oxide layers formed was as high as 1 mu m, comprising different spinel structures. The influence of alloying elements such as Al, Nb, Mo, Mn and Ti on the corrosion behavior is investigated and possible corrosion mechanisms for each candidate alloy are discussed. (C) 2016 Elsevier Ltd. All rights reserved.
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