A Review of Particle Size Analysis with X-ray CT



Behnsen, Julia G ORCID: 0000-0003-1511-3051, Black, Kate ORCID: 0000-0003-3638-6518, Houghton, James E ORCID: 0000-0001-8835-9744 and Worden, Richard H ORCID: 0000-0002-4686-9428
(2023) A Review of Particle Size Analysis with X-ray CT. MATERIALS, 16 (3). 1259-.

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Abstract

Particle size and morphology analysis is a problem common to a wide range of applications, including additive manufacturing, geological and agricultural materials' characterisation, food manufacturing and pharmaceuticals. Here, we review the use of microfocus X-ray computed tomography (X-ray CT) for particle analysis. We give an overview of different sample preparation methods, image processing protocols, the morphology parameters that can be determined, and types of materials that are suitable for analysis of particle sizes using X-ray CT. The main conclusion is that size and shape parameters can be determined for particles larger than approximately 2 to 3 μm, given adequate resolution of the X-ray CT setup. Particles composed of high atomic number materials (Z > 40) require careful sample preparation to ensure X-ray transmission. Problems occur when particles with a broad range of sizes are closely packed together, or when particles are fused (sintered or cemented). The use of X-ray CT for particle size analysis promises to become increasingly widespread, offering measurements of size, shape, and porosity of large numbers of particles within one X-ray CT scan.

Item Type: Article
Uncontrolled Keywords: X-ray computed tomography, particle size distribution, particle shape measurements, powder sample preparation
Divisions: Faculty of Science and Engineering > School of Environmental Sciences
Depositing User: Symplectic Admin
Date Deposited: 27 Jan 2023 08:18
Last Modified: 22 Mar 2023 14:34
DOI: 10.3390/ma16031259
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3167925