Deuterium absorption in reduced activation ferritic/martensitic steel F82H under exposure to D2P vapor/water at room temperature

JOURNAL OF NUCLEAR MATERIALS

卷:507

Article

Alimov, V. Kh^1,2,3  Hatano, Y.¹  Sugiyama, K.⁴  Zibrov, M.^4,5,6  Schwarz-Selinger, T.⁴  Jacob, W.⁴ 

[1] Univ Toyama, Hydrogen Isotope Res Ctr, Org Promot Res, Toyama 9308555, Japan

[2] Russian Acad Sci, AN Frumkin Inst Phys Chem & Electrochem, Moscow 119071, Russia

[3] Natl Res Nucl Univ, MEPhI Moscow Engn Phys Inst, Moscow 115409, Russia

[4] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[5] Tech Univ Munich, Phys Dept E28, D-85748 Garching, Germany

[6] Univ Ghent, Dept Appl Phys, B-9000 Ghent, Belgium

关键词: F82H steel;    Hydrogen isotope retention;    Radiation damage;    Water vapor;   

DOI  :  10.1016/j.jnucmat.2018.04.035

来源: Elsevier

【 摘 要 】

Eight samples of F82H ferritic/martensitic steel were irradiated at 300 K with 20 MeV W ions to the damage level of 0.54 displacements per atom at the damage peak. Three samples were afterwards annealed in vacuum at 423 K for 72 h and then at 373 K for 106 h. Three other samples were annealed in H-2 atmosphere at 100 kPa at the same annealing temperatures and durations. All samples were exposed at room temperature to D2O vapor at the partial pressures in the range from 3 to 6 kPa for 365 to 1181 days. After termination of the D2O vapor exposure, the surfaces of the samples were partly covered by small (<= 1 mm in diameter) drops of D2O water. Thus, the damaged samples were exposed to a mixture of D2O vapor and water. Trapping of deuterium at the ion-induced defects in the damage zone was examined by the D(He-3, p)He-4 nuclear reaction. It has been found that the W-ion-induced defects generated in the F82H samples are decorated by deuterium diffusing from the surface. (C) 2018 Elsevier B.V. All rights reserved.

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