Tritium Permeation through Ce-ODS Steel

Yudai Urabe; Kenichi Hashizume; Teppei Otsuka; Kan Sakamoto

doi:10.1080/15361055.2020.1712992

Tritium Permeation through Ce-ODS Steel

Yudai Urabe, Kenichi Hashizume, Teppei Otsuka, Kan Sakamoto

Engineering Science for Advanced energy system

Research output: Contribution to journal › Article › peer-review

Abstract

Tritium permeability through FeCrAl-oxide-dispersion-strengthened (ODS) ferritic steel containing Ce oxides (Ce-ODS steel) was measured at temperatures ranging from 373 to 623 K. Some of the Ce-ODS steel specimens were oxidized by means of an autoclave treatment at 563 K for 30 days to examine the effect of the surface oxidized layer on the tritium permeability. The tritium permeability obtained for nonoxidized specimen was consistent with that for other common ferritic steels and FeCrAl ferritic steel. For the oxidized specimen, the surface oxide layer suppressed the apparent tritium permeability. The permeability for the oxidized specimen also depended on the atmosphere of the downstream in the permeation experiment: An atmosphere containing water vapor yielded lower tritium permeability compared with a reductive one.

Original language	English
Pages (from-to)	392-397
Number of pages	6
Journal	Fusion Science and Technology
Volume	76
Issue number	4
DOIs	https://doi.org/10.1080/15361055.2020.1712992
Publication status	Published - May 18 2020

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Nuclear and High Energy Physics
Nuclear Energy and Engineering
Materials Science(all)
Mechanical Engineering

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abstract = "Tritium permeability through FeCrAl-oxide-dispersion-strengthened (ODS) ferritic steel containing Ce oxides (Ce-ODS steel) was measured at temperatures ranging from 373 to 623 K. Some of the Ce-ODS steel specimens were oxidized by means of an autoclave treatment at 563 K for 30 days to examine the effect of the surface oxidized layer on the tritium permeability. The tritium permeability obtained for nonoxidized specimen was consistent with that for other common ferritic steels and FeCrAl ferritic steel. For the oxidized specimen, the surface oxide layer suppressed the apparent tritium permeability. The permeability for the oxidized specimen also depended on the atmosphere of the downstream in the permeation experiment: An atmosphere containing water vapor yielded lower tritium permeability compared with a reductive one.",

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AU - Urabe, Yudai

AU - Hashizume, Kenichi

AU - Otsuka, Teppei

AU - Sakamoto, Kan

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