Presentation Information

4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)

[2G10]Adhesion strength of self-healed Al-rich oxide layer on FeCrAl alloy in flowing lead-bismuth eutectic

*Yoshiki Kitamura¹, Atsushi Kawarai¹, Masatoshi Kondo¹, Shigeru Saito², Hironari Obayashi² (1. Science Tokyo, 2. JAEA)

Keywords:

FeCrAl alloys,Accelerator driven systems,Lead cooled fast reactors,Liquid lead-bismuth eutectic,Self-healing oxide layer,Layer adhesion

FeCrAl alloys are promising structural materials for accelerator driven systems (ADSs) and lead cooled fast reactors (LFRs). The corrosion tests of APMT (Fe-21Cr-5Al-3Mo) were performed in flowing lead bismuth eutectic (LBE) for 2000~4000 hours at temperature of 450 ℃, oxygen concentrations of 10^-4~10^-6 wt.% and flow velocity of 1 m/s by OLLOCHI loop (JAEA/J-PARC). The in-situ self-healing behavior of the oxide layer in flowing LBE was clarified by means of the corrosion test with the specimen in which the protective oxide layer was artificially removed in the middle of the corrosion test. The relationship between the adhesion in the shear direction and the roughness of the layer-substrate interface was also clarified.

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