Mechanical properties of tungsten following rhenium ion and helium plasma exposure

C. S. Corr*, S. O'Ryan, C. Tanner, M. Thompson, J. E. Bradby, G. De Temmerman, R. G. Elliman, P. Kluth, D. Riley

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    Mechanical properties of Tungsten (W) samples irradiated with 2 MeV Rhenium (Re) ions and helium (He) plasma were investigated using nanoindentation. It was found that there was an increase in hardness for all samples following separate irradiation with both Re ion and He plasma. A slight increase in hardness was obtained for combined exposures. A comparable increase in hardness was observed for a pure He plasma with a sample temperature of 473 K and 1273 K. Optical interferometry was employed to compare surface modification of the samples. Grazing incidence small angle x-ray scattering confirmed He nano-bubble formation of approximately 1 nm diameter in the higher temperature sample, which was not observed with samples at the lower temperatures.

    Original languageEnglish
    Pages (from-to)1336-1341
    Number of pages6
    JournalNuclear Materials and Energy
    Volume12
    DOIs
    Publication statusPublished - Aug 2017

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