Journal
CORROSION SCIENCE
Volume 174, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2020.108824
Keywords
FeCrAl alloy; Ion implantation; High temperature corrosion; Oxidation
Funding
- National Natural Science Foundation of China [U1967211, U1832112, 11975191, U18672001]
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The early corrosion behaviour of an irradiated FeCrAl alloy in a simulated pressurized water reactor environment was investigated. The irradiated alloy showed a Cr-rich oxide layer, which was not observed in the asreceived alloy. The corrosion induced the formation of a duplex-layer oxide structure consisting of an outer hematite alpha-Fe2O3 layer and an inner spinel Cr-rich oxide layer. In the initial corrosion stage, the smooth surface formed by ion sputtering and the formation of the Cr-rich oxide layer suppressed the corrosion. However, in the later corrosion stage, the irradiated alloys exhibited severe corrosion because of the presence of irradiation-induced defects.
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