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Corrosion behavior of FBR structural materials in high temperature supercritical CO$$_{2}$$

高温超臨界CO$$_{2}$$中におけるFBR構造材料の腐食挙動

古川 智弘  ; 稲垣 嘉之; 有冨 正憲*

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

高速増殖炉への超臨界CO$$_{2}$$ガスタービンシステムの適用に向けた開発課題の一つに高温超臨界CO$$_{2}$$中における高速炉構造材料の耐食性が挙げられる。本報では、20MPa, 400$$sim$$600$$^{circ}$$Cの超臨界CO$$_{2}$$中における高速炉構造材料候補材(12Cr鋼及び316FR)の約2000時間までの腐食挙動について得られた知見を報告する。

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 by supercritical CO$$_{2}$$ at high temperature. In this study, corrosion tests on the candidate materials, high-chromium martensitic steel (12Cr-steel) and FBR grade type 316 stainless steel (316FR), were performed for up to approximately 2000h at 400-600 $$^{circ}$$C in supercritical CO$$_{2}$$ pressurized at 20 MPa.

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