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Effects of neutron irradiation on hydrogen isotope permeation on W-Re

Journal Article · · Fusion Engineering and Design
 [1];  [2];  [3];  [4];  [5];  [6];  [6];  [4];  [1]
  1. Shizuoka University (Japan)
  2. Hefei Univ. of Technology (China)
  3. National Institute for Fusion Science, Gifu (Japan); The Graduate University for Advanced Studies (Japan)
  4. Tohoku Univ., Ibaraki (Japan)
  5. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  6. Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Hydrogen and deuterium permeation behavior for neutron damaged W and W-3 %Re was evaluated using a Plasma Driven Permeation device. For neutron damaged W-3 %Re at 773 K and 1473 K, precipitation of Re and Os was observed by atom probe tomography. Neutron irradiation introduced defect damage throughout the sample and enhanced H and D diffusion toward downstream side. The existence of irradiation damage by neutron irradiation was found to increase hydrogen isotope permeation. Moreover, the existence of Re has suppressed the formation of irradiation defects for hydrogen isotope trapping sites. Further, the recovery of irradiation defects by increasing the irradiation temperature led to the structural changes due to the diffusion of Re and Os, which also affected the hydrogen isotope permeation behavior.

Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC07-05ID14517; NA0003525
OSTI ID:
2565692
Alternate ID(s):
OSTI ID: 2484086
Report Number(s):
INL/JOU--24-82335-Rev000
Journal Information:
Fusion Engineering and Design, Journal Name: Fusion Engineering and Design Vol. 211; ISSN 0920-3796
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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