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

Journal Article · · Journal of Materials Science

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. Here, 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.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
Grant/Contract Number:
AC04-94AL85000; NA-0003525; 1355438
OSTI ID:
1650171
Report Number(s):
SAND-2020-8427J; 689937
Journal Information:
Journal of Materials Science, Vol. 54, Issue 9; ISSN 0022-2461
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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Cited By (3)

Electronic heat transport versus atomic heating in irradiated short metallic nanowires journal October 2019
Amorphous intergranular films mitigate radiation damage in nanocrystalline Cu-Zr journal March 2020
Amorphous intergranular films mitigate radiation damage in nanocrystalline Cu-Zr preprint January 2019

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