Hydrogen accumulation in the helium implanted surface of Mo single crystals

S. Nagata, K. Tokunaga, B. Tsuchiya, N. Ohtsu, T. Sugawara, T. Shikama

研究成果: ジャーナルへの寄稿会議記事査読

6 被引用数 (Scopus)


The up-take behavior of hydrogen and deuterium was studied for the surface layer of Mo single crystals irradiated by 10 keV He ions with a high dose, at which the blisters and exfoliation were formed on the surface. Hydrogen accumulation was found in the H saturated layer up to a maximum concentration of about 0.2 H/Mo at room temperature. Although the up-taken H concentration profiles and the morphological changes of the irradiated surface depended on irradiation temperatures, thermal release behavior of up-taken H were similar for both specimens irradiated at 295 and 820 K. The higher pressure of H2 and/or H2O caused the quicker accumulation of H, and the hydrogen dissociation seemed to be sensitive to the surface contamination. The up-take rate for H was an order of magnitude larger than that for D, even by letting mainly D2 and/or D2O into the vacuum chamber.

ジャーナルJournal of Alloys and Compounds
出版ステータス出版済み - 8月 11 2003
イベントProceedings of the Eight International Symposium on Metal Hyd (MH 2002) - Annecy, フランス
継続期間: 9月 2 20029月 6 2002

!!!All Science Journal Classification (ASJC) codes

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学


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