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Report No.
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High temperature oxidation of FBR structural materials in carbon dioxide and in air

Furukawa, Tomohiro; Kato, Shoichi; Inagaki, Yoshiyuki; Aritomi, Masanori*

A key problem in the application of a supercritical carbon dioxide (CO$$_{2}$$) turbine cycle to a fast breeder reactor is the corrosion of structural materials brought about by supercritical CO$$_{2}$$ at high temperatures. In this study, high-temperature oxidation tests on the structural materials were performed in carbon dioxide pressurized at 0.2 and 1 MPa, and in air, and the oxidation behavior were compared. Results of investigating the effect of CO$$_{2}$$ pressure including the previous reports tested at 10 MPa and at 20 MPa, the effect was hardly observed for all steels. In air environment, weight gain caused by high temperature oxidation was much lower than that in CO$$_{2}$$.

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