Helium gas permeability of SiC/SiC composite after heat cycles

Hino, T.; Hayashishita, E.; Kohyama, A.; Yamauchi, Y.; Hirohata, Y.

Helium gas permeability of SiC/SiC composite after heat cycles

Hino, T.; Hayashishita, E.; Kohyama, A. et al.

Journal of Nuclear Materials, 2007, 367-370(1), 736-741

Permalink : https://hdl.handle.net/2115/29920

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アクセス権	open access
URI	https://hdl.handle.net/2115/29920
タイトル	Helium gas permeability of SiC/SiC composite after heat cycles
著者	Hino, T. ; Hayashishita, E. ; Kohyama, A. ; Yamauchi, Y. ; Hirohata, Y.
e-Rad_Researcher 30109491 著者名 Hino, T.
著者名 Hayashishita, E.
著者名 Kohyama, A.
e-Rad_Researcher 80312388 著者名 Yamauchi, Y.
著者名 Hirohata, Y.
言語	英語
キーワード	S0400(Silicon and Silicon Compounds)
	F0400(First Wall Materials)
	H0200(Helium)
	P0100(Permeation)
	H0100(Heat Treatment)
発行日	2007-08-01
出版者	Elsevier B.V.
収録物名	Journal of Nuclear Materials
巻(号)	367-370(1)
ページ	736-741
抄録	In a blanket made of SiC/SiC composite, helium gas employed as coolant may leak into plasma, resulting in fuel dilution. The helium gas permeability of SiC/SiC composite has to be measured to qualify SiC/SiC composite as a blanket material. Since the SiC/SiC blanket receives heat cycles due to plasma start up and shut down phases, the change of helium gas permeability after the heat load has to be investigated. Heat cycles with different highest temperatures and heating rates were applied to SiC/SiC composite with very low permeability, and the change of permeability was measured. No increase in the permeability was observed for an operation temperature of SiC/SiC blanket at 1100 K. The increase of permeability was observed only when the maximum temperature was very high, 1300 K, and when the heating rate was also large, 10 K/s. The operational regime without increase of permeability was determined based upon the present data.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0022-3115
EISSN	0022-3115
関連情報	URI http://www.sciencedirect.com/science/journal/00223115
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.jnucmat.2007.03.089