X-ray Diffraction Computed Nanotomography Applied to Solve the Structure of Hierarchically Phase-Separated Metallic Glass

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Authors

  • Mihai Stoica
  • Baran Sarac
  • Jonathan Wright
  • Christoph Gammer
  • Junhee Han
  • Petre F. Gostin
  • Jörg F. Löffler

Organisational units

External Organisational units

  • Eidgenössische Technische Hochschule Zürich
  • Erich Schmid Institute of Materials Science
  • ESRF
  • Korea Institute for Rare Metals
  • Korea Institute of Industrial Technology
  • School of Metallurgy & Materials, University of Birmingham

Abstract

The structure of matter at the nanoscale, in particular that of amorphous metallic alloys, is of vital importance for functionalization. With the availability of synchrotron radiation, it is now possible to visualize the internal features of metallic samples without physically destroying them. Methods based on computed tomography have recently been employed to explore the local features. Tomographic reconstruction, while it is relatively uncomplicated for crystalline materials, may generate undesired artifacts when applied to featureless amorphous or nanostructured metallic alloys. In this study we show that X-ray diffraction computed nanotomography can provide accurate details of the internal structure of a metallic glass. We demonstrate the power of the method by applying it to a hierarchically phase-separated amorphous sample with a small volume fraction of crystalline inclusions, focusing the X-ray beam to 500 nm and ensuring a sub-micrometer 2D resolution via the number of scans.

Details

Original languageEnglish
Pages (from-to)2386-2398
Number of pages13
JournalACS nano
Volume15.2021
Issue number2
DOIs
Publication statusPublished - 29 Jan 2021