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Coating thickness determination in highly absorbent core–shell systems
Author(s) -
Palancher Herve,
Bonnin Anne,
Honkimäki Veijo,
Suhonen Heikki,
Cloetens Peter,
Zweifel Tobias,
Tucoulou Rémi,
Rack Alexander,
Voltolini Marco
Publication year - 2012
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889812031159
Subject(s) - coating , materials science , shell (structure) , diffraction , core (optical fiber) , particle (ecology) , absorption (acoustics) , layer (electronics) , laser , scattering , composite material , optics , physics , oceanography , geology
This article describes a single‐shot methodology to derive an average coating thickness in multi‐particle core–shell systems exhibiting high X‐ray absorption. Powder composed of U–Mo alloy particles surrounded by a micrometre‐thick UO 2 protective layer has been used as a test sample. Combining high‐energy X‐ray diffraction and laser granulometry, the average shell thickness could be accurately characterized. These results have been validated by additional measurements on single particles by two techniques: X‐ray nanotomography and high‐energy X‐ray diffraction. The presented single‐shot approach gives rise to many potential applications on core–shell systems and in particular on as‐fabricated heterogeneous nuclear fuels.