A method for site-specific and cryogenic specimen fabrication of liquid/solid interfaces for atom probe tomography
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Energy and Environment Directorate
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Earth and Biological Sciences Directorate
In this paper, a site-specific, cryogenic, focused ion beam (FIB) method is presented for the preparation of atom probe tomography (APT) specimens from a frozen liquid/solid interface. As a practical example, the interface between water and a corroded boroaluminosilicate glass has been characterized by APT for the first time. The water/glass interface is preserved throughout specimen preparation by plunge freezing the corroding glass particles with the corrosion solution into slush nitrogen. Site-specific specimen preparation is enabled through a new approach to extract and mount a small volume of material using a cryogenically cooled FIB stage and micromanipulator. The prepared APT specimens are subsequently transferred from the FIB to APT under cryogenic and high-vacuum conditions using a novel FIB/APT transfer shuttle and home-built environmental transfer hub attached to the APT system. Particular focus is given to the technical methods for specimen fabrication under cryogenic conditions. Finally, persistent challenges are discussed in addition to future opportunities for this new specimen preparation method.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Performance and Design of Nuclear Waste Forms and Containers (WastePD); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
- Grant/Contract Number:
- AC05-76RL01830; SC0016584
- OSTI ID:
- 1463336
- Alternate ID(s):
- OSTI ID: 1600933
OSTI ID: 1692161
OSTI ID: 23117987
OSTI ID: 1490238
- Report Number(s):
- PNNL-SA--133479; PII: S0304399118301153
- Journal Information:
- Ultramicroscopy, Journal Name: Ultramicroscopy Vol. 194; ISSN 0304-3991
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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