Hydrogen Release Rate of SUS316 in Ar Gas Flow and Vacuum

To understand the mechanism of hydrogen release from materials used in vacuum technology, the release behavior of tritium from stainless steel SUS316 previously loaded with this gas was investigated isothermally at 423 K either under a stream of argon or under vacuum conditions. Depth profiles of th...

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Veröffentlicht in:Journal of the Vacuum Society of Japan 2008, Vol.51(9), pp.618-621
Hauptverfasser: TORIKAI, Yuji, NAOE, Shogo, AKAISHI, Kenya, PENZHORN, Ralf-Dieter, WATANABE, Kuniaki, MATSUYAMA, Masao
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container_end_page 621
container_issue 9
container_start_page 618
container_title Journal of the Vacuum Society of Japan
container_volume 51
creator TORIKAI, Yuji
NAOE, Shogo
AKAISHI, Kenya
PENZHORN, Ralf-Dieter
WATANABE, Kuniaki
MATSUYAMA, Masao
description To understand the mechanism of hydrogen release from materials used in vacuum technology, the release behavior of tritium from stainless steel SUS316 previously loaded with this gas was investigated isothermally at 423 K either under a stream of argon or under vacuum conditions. Depth profiles of the heated specimens were determined by chemical etching. The experimental release rate and the tritium depth profile in the solid could be simulated with a model based on bulk diffusion. The diffusion coefficients used to fit the depth profiles of specimens heated under vacuum at 423 K were non-discernible from those obtained with specimens heated under a stream of Ar at the same temperature.
doi_str_mv 10.3131/jvsj2.51.618
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title Hydrogen Release Rate of SUS316 in Ar Gas Flow and Vacuum
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