Large volume serial section tomography by Xe Plasma FIB dual beam microscopy

Timothy Burnett, R. Kelley, Bart Winiarski, L. Contreras, Michael Daly, Ali Gholinia, M.G. Burke, Philip Withers

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    Abstract

    Ga+ Focused Ion Beam-Scanning Electron Microscopes (FIB-SEM) have revolutionised the level of microstructural information that can be recovered in 3D by block face serial section tomography (SST), as well as enabling the site-specific removal of smaller regions for subsequent transmission electron microscope (TEM) examination. However, Ga+ FIB material removal rates limit the volumes and depths that can be probed to dimensions in the tens of microns range. Emerging Xe+ Plasma Focused Ion Beam-Scanning Electron Microscope (PFIB-SEM) systems promise faster removal rates. Here we examine the potential of the method for large volume serial section tomography as applied to bainitic steel and WC–Co hard metals. Our studies demonstrate that with careful control of milling parameters precise automated serial sectioning can be achieved with low levels of milling artefacts at removal rates some 60× faster. Volumes that are hundreds of microns in dimension have been collected using fully automated SST routines in feasible timescales (
    Original languageEnglish
    Pages (from-to)119-129
    Number of pages11
    JournalUltramicroscopy
    Volume161
    Early online date10 Nov 2015
    DOIs
    Publication statusPublished - 10 Nov 2015

    Keywords

    • Xe+ Plasma FIB-SEM dual beam microscope; Scanning electron microscopy; 3D imaging; X-ray micro-tomography (micro-CT); A508 grade 3 steel

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