In situ TEM investigation of self-ion irradiation of nanoporous gold

Nicolas J. Briot, Maria Kosmidou, Rémi Dingreville, Khalid Hattar, T. John Balk

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The ability of nanoporous metals to avoid accumulation of damage under ion beam irradiation has been the focus of several studies in recent years. The width of the interconnected ligaments forming the network structure typically is on the order of tens of nanometers. In such confined volumes with high amounts of surface area, the accumulation of damage (defects such as stacking-fault tetrahedra and dislocation loops) can be mitigated via migration and annihilation of these defects at the free surfaces. In this work, in situ characterization of radiation damage in nanoporous gold (np-Au) was performed in the transmission electron microscope. Several samples with varying average ligament size were subjected to gold ion beams having three different energies (10 MeV, 1.7 MeV and 46 keV). The inherent radiation tolerance of np-Au was directly observed in real time, for all ion beam conditions, and the degree of ion-induced damage accumulation in np-Au ligaments is discussed here.

Original languageEnglish
Pages (from-to)7271-7287
Number of pages17
JournalJournal of Materials Science
Volume54
Issue number9
DOIs
StatePublished - May 15 2019

Bibliographical note

Publisher Copyright:
© 2019, Springer Science+Business Media, LLC, part of Springer Nature.

ASJC Scopus subject areas

  • Mechanics of Materials
  • Ceramics and Composites
  • Mechanical Engineering
  • Polymers and Plastics
  • General Materials Science
  • Materials Science (miscellaneous)

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