Deuterium permeation in polycrystalline nickel pre-implanted with nickel and helium ions

San-Qiang Shi, D. A. Thompson, W. W. Smeltzer

Research output: Journal article publicationJournal articleAcademic researchpeer-review


The interaction between deuterium and irradiation defects in nickel is studied using the gas-phase permeation technique. Irradiation defects were introduced using 90 keV Ni+ions with fluences of 1014-1017ions cm-2, or 30 keV4He+ions with fluences of 1015-5 × 1016ions cm-2. Permeation results show that crystalline defects such as dislocation loops produce no measurable effect on deuterium permeation in the temperature range 370-570 K. By comparison, helium defects decrease the apparent diffusivity by four to six orders of magnitude, indicating a strong trapping effect for deuterium. These results are discussed using a simple trapping model.
Original languageEnglish
Pages (from-to)71-78
Number of pages8
JournalMaterials Science and Engineering A
Issue number1
Publication statusPublished - 15 Oct 1992
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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