Journal
CORROSION SCIENCE
Volume 111, Issue -, Pages 649-658Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.06.004
Keywords
Alloy; Carburization; High-temperature corrosion; Oxidation
Funding
- MSIP/NRF (Nuclear R&D Program) of Korea [2013M2A8A6035683]
- BK-Plus Program of the MSIP of Korea
- National Research Foundation of Korea [2013M2A8A6035683] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Chromia-forming heat-resistant alloys were corroded in atmospheric CO2 (0.1 MPa) and supercritical-CO2 (S-CO2, 10 and 20 MPa) at 550-650 degrees C for 1000 h. The weight gain and the extent of an amorphous C layer at the oxide/matrix interface increased with increasing CO2 pressure from 0.1 MPa to 20 MPa, but the increase was mostly less than a factor of 2. Despite the huge difference in the test pressure, the depth of the carburized region with Cr-rich carbides was rarely affected for Alloy 800HT, resulting in similar tensile properties after corrosion in CO2 and S-CO2. (C) 2016 Elsevier Ltd. All rights reserved.
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