This article describes a single-shot methodology to derive an average coating thickness in multi-particle coreshell systems exhibiting high X-ray absorption. Powder composed of UMo alloy particles surrounded by a micrometre-thick UO2 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 coreshell systems and in particular on as-fabricated heterogeneous nuclear fuels.

Coating thickness determination in highly absorbent core–shell systems / H. Palancher, A. Bonnin, V. Honkimäki, H. Suhonen, P. Cloetens, T. Zweifel, R. Tucoulou, A. Rack, M. Voltolini. - In: JOURNAL OF APPLIED CRYSTALLOGRAPHY. - ISSN 0021-8898. - 45:5(2012 Oct), pp. 906-913. [10.1107/S0021889812031159]

Coating thickness determination in highly absorbent core–shell systems

M. Voltolini
Ultimo
2012-10

Abstract

This article describes a single-shot methodology to derive an average coating thickness in multi-particle coreshell systems exhibiting high X-ray absorption. Powder composed of UMo alloy particles surrounded by a micrometre-thick UO2 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 coreshell systems and in particular on as-fabricated heterogeneous nuclear fuels.
high-energy X-ray diffraction; low-enriched nuclear fuels; nanotomography; powder diffraction; Rietveld refinement;
Settore GEO/06 - Mineralogia
Settore GEO/09 - Georisorse Miner.Appl.Mineral.-Petrogr.per l'amb.e i Beni Cul
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/908527
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