Abstract
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 °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.
Original language | English |
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Pages (from-to) | 649-658 |
Number of pages | 10 |
Journal | Corrosion Science |
Volume | 111 |
DOIs | |
Publication status | Published - 1 Oct 2016 |
Bibliographical note
Funding Information:This study was supported by the MSIP/NRF ( Nuclear R&D Program 2013M2A8A6035683 ) of Korea. Financial support for three of the authors is provided by the BK-Plus Program of the MSIP of Korea .
Publisher Copyright:
© 2016 Elsevier Ltd
Keywords
- A. Alloy
- C. Carburization
- C. High-temperature corrosion
- C. Oxidation
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- General Materials Science