کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
271274 | 504991 | 2014 | 6 صفحه PDF | دانلود رایگان |
• Transport of H2 and D2 in advanced reduced activation alloy was measured.
• Appreciable trapping effects are observed only at low temperatures (250–350 °C).
• Isotope effect ratio for the diffusivity differs from the classical prediction.
Advanced reduced activation alloy (ARAA) is a reduced activation ferritic/martensitic (RAFM) steel under development at the Korea Atomic Energy Research Institute. The transport of hydrogen and deuterium in ARAA was investigated in an elevated temperature range of 250–600 °C. A continuous-flow method, a time-dependent gas-phase technique, was used for the measurements. Complete sets of transport parameters (permeability, diffusivity, solubility, trap site density, and trapping energy) of hydrogen and deuterium in ARAA were successfully obtained. We show that appreciable trapping effects are observed only at low temperatures (250–350 °C) and that the isotope effect ratio for the diffusivity differs from the classical prediction. However, the measured values of permeability, effective diffusivity, and effective solubility of ARRA were within the range of results reported for other RAFM steels.
Journal: Fusion Engineering and Design - Volume 89, Issue 11, November 2014, Pages 2726–2731