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.

Funding

The authors would like to thank Daniel Buller for his assistance with the Tandem accelerator, as well Brittany Muntifering and Daniel Bufford for their help during TEM imaging. This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science user facility operated for the U.S. Department of Energy (DOE). Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy National Nuclear Security Administration under contract DE-NA-0003525. The views expressed in the article do not necessarily represent the views of the U.S. Department of Energy or the United States Government. Portions of the sample preparation and characterization were performed at the University of Kentucky: access to characterization instruments and staff assistance was provided by the Electron Microscopy Center at the University of Kentucky, supported in part by the National Science Foundation/EPSCoR Award No. 1355438 and by the Commonwealth of Kentucky.

FundersFunder number
National Science Foundation/EPSCoR1355438
National Science and Technology Development Agency
Michigan State University-U.S. Department of Energy (MSU-DOE) Plant Research Laboratory
Office of Science Programs
National Nuclear Security AdministrationDE-NA-0003525
Sandia National Laboratory
University of Kentucky

    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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