Enrichment of Chromium at Grain Boundaries in Chromia Doped UO2

Middleburgh, Simon C.; Dumbill, Simon; Qaisar, Adam; Vatter, I.A.; Owen, Megan W.; Vallely, Sarah; Goddard, D. T.; Eaves, David; Puide, Mattias; Limbäck, Magnus; Lee, William

doi:10.1016/j.jnucmat.2023.154250

Journal of Nuclear Materials

2023

DOI: 10.1016/j.jnucmat.2023.154250

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Enrichment of Chromium at Grain Boundaries in Chromia Doped UO2

Simon C. Middleburgh

Simon Dumbill

Adam Qaisar

et al.

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Cited by 14 publications

(1 citation statement)

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“…In the other case of crystalline powders with a non-orthorhombic lattice, it is necessary to take into account the angles between the axes [9]. In this case, it becomes possible to widely use the BWA method for studying various crystalline powders: other electrode and atmospheric contaminants [47], as well as nuclear fuel and materials [53,54].…”

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confidence: 99%

Using the BWA (Bertaut-Warren-Averbach) Method to Optimize Crystalline Powders Such as LiFePO4

Bobyl,

Konkov,

Faradzheva

et al. 2023

Mathematics

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The average sizes L¯i, and their dispersion Wi along the i-th axis, of crystallites in powders are used to determine X-ray diffraction sizes, Di XRD, averaged over crystallite columns within the BWA method. Numerical calculations have been carried out for an orthorhombic lattice of crystallites, such as LiFePO4, NMC, having a Lamé’s g-type superellipsoid shape. For lognormal distributions, the analytical expression for the normalized coefficient Kn has been found: Kn=Di XRD/L¯i=Kg,0+KgW2, where Kg,0 is a constant at W→0, Kg is a constant depending on the g -type shape. The dependences of Di XRD are also calculated for normal distribution. A fairly simple equation can be obtained as a result of analytical transformations in the framework of experimentally validated approximations. However, a simpler way is to carry out numerical computer calculations with subsequent approximation of the calculated curves. Using the obtained analytical expressions to control technologies from nuclear fuel to cathode materials will improve the efficiency of flexible energy network, especially storage in autonomous and standby power plants.

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mentioning

confidence: 99%

Using the BWA (Bertaut-Warren-Averbach) Method to Optimize Crystalline Powders Such as LiFePO4

Bobyl,

Konkov,

Faradzheva

et al. 2023

Mathematics

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Assessing Li accommodation at amorphous ZrO2 grain boundaries

Stephens,

Owen,

Ghardi

et al. 2024

Journal of Nuclear Materials

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The lattice contraction of UO2 from Cr doping as determined via high resolution synchrotron X-ray powder diffraction

Murphy,

Svitlyk,

Henkes

et al. 2024

Journal of Nuclear Materials

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Enrichment of Chromium at Grain Boundaries in Chromia Doped UO2

Cited by 14 publications

References 22 publications

Using the BWA (Bertaut-Warren-Averbach) Method to Optimize Crystalline Powders Such as LiFePO4

Using the BWA (Bertaut-Warren-Averbach) Method to Optimize Crystalline Powders Such as LiFePO4

Assessing Li accommodation at amorphous ZrO2 grain boundaries

The lattice contraction of UO2 from Cr doping as determined via high resolution synchrotron X-ray powder diffraction

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