TY - JOUR

T1 - X-ray Diffraction Computed Nanotomography Applied to Solve the Structure of Hierarchically Phase-Separated Metallic Glass

AU - Stoica, Mihai

AU - Sarac, Baran

AU - Spieckermann, Florian

AU - Wright, Jonathan

AU - Gammer, Christoph

AU - Han, Junhee

AU - Gostin, Petre F.

AU - Eckert, Jürgen

AU - Löffler, Jörg F.

N1 - Publisher Copyright: © 2021 American Chemical Society.

PY - 2021/1/29

Y1 - 2021/1/29

N2 - 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.

AB - 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.

U2 - 10.1021/acsnano.0c04851

DO - 10.1021/acsnano.0c04851

M3 - Article

VL - 15.2021

SP - 2386

EP - 2398

JO - ACS nano

JF - ACS nano

SN - 1936-0851

IS - 2

ER -