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Title: Hydrogen permeation behavior through F82H at high temperature

F82H is a primary candidate of structural material and coolant pipe material in a blanket of a fusion reactor. Understanding tritium permeation behavior through F82H is important. In a normal operation of a fusion reactor, the temperature of F82H will be controlled below 550 C. degrees because it is considered that F82H can be used up to 30,000 hours at 550 C. degrees. However, it is necessary to assume the situation where F82H is heated over 550 C. degrees in a severe accident. In this study, hydrogen permeation behavior through F82H was investigated in the temperature range from 500 to 800 C. degrees. In some cases, water vapor was added in a sample gas to investigate an effect of water vapor on hydrogen permeation. The permeability of hydrogen in the temperature range from 500 to 700 C. degrees agreed well with the permeability reported by E. Serra et al. The degradation of the permeability by water vapor was not observed. After the hydrogen permeation reached in a steady state at 700 C. degrees, the F82H sample was heated to 800 C. degrees. The permeability of hydrogen through F82H sample which was once heated up to 800 C. degrees was lowermore » than that of the original one. (authors)« less
Authors:
; ; ;  [1] ;  [2] ;  [3]
  1. Interdisciplinary Graduate School of Engineering Science, Kyushu University, Kyushu (Japan)
  2. Energy Science and Engineering, Faculty of Engineering, Kyushu University, Kyushu (Japan)
  3. Malaysia-Japan International Institute of Technology, UTM, Kuala Lumpur (Malaysia)
Publication Date:
OSTI Identifier:
22429743
Resource Type:
Journal Article
Resource Relation:
Journal Name: Fusion Science and Technology; Journal Volume: 67; Journal Issue: 2; Conference: TRITIUM 2013: 10. International Conference on Tritium Science and Technology, Nice Acropolis (France), 21-25 Oct 2013; Other Information: Country of input: France; 6 refs.
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; HYDROGEN; PERMEABILITY; STEADY-STATE CONDITIONS; STEELS; TEMPERATURE RANGE 0400-1000 K; THERMONUCLEAR REACTORS; TRITIUM; WATER VAPOR