Scholarlink

<p>The doping of UO<sub>2</sub> ceramics with transition metal elements such as vanadium is a topical enterprise due to the relevance to advanced technology nuclear fuels in addition to understanding fuel-cladding interactions in spent nuclear fuel. Herein, the lattice and microstructural dependence of V-doped UO<sub>2</sub> ceramics synthesized under conditions of −&#xa0;420&#xa0;kJ/mol and 1700&#xa0;°C with elemental additions of 0, 500, 1000 and 2000&#xa0;ppm was established using high-resolution synchrotron X-ray powder diffraction and scanning electron microscopy. Microstructural analysis indicates moderate growth of the UO<sub>2</sub> grain structure is achieved with V doping, but not as appreciable as gold-standard Cr-doped UO<sub>2</sub>. Collected diffractograms, analysed using the Rietveld method, indicate similar levels of solubility of V in comparison to Cr-doped UO<sub>2</sub> under&#xa0;like conditions. The results of this investigation were discussed in relation to current structural models of lattice incorporation of transition metals in UO<sub>2.</sub></p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A synchrotron X-ray diffraction and electron microscopy study of vanadium-doped UO2

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年2月24日

查看全文
  • Gabriel L. Murphy,
  • Julien Marquardt,
  • Martina Klinkenberg,
  • Daniil Shirokiy,
  • Philip Kegler,
  • Maximilian Henkes,
  • Andrey Bukaemskiy,
  • Selina Richter,
  • Luiza Braga,
  • Christoph Hennig,
  • Dirk Bosbach

摘要

The doping of UO2 ceramics with transition metal elements such as vanadium is a topical enterprise due to the relevance to advanced technology nuclear fuels in addition to understanding fuel-cladding interactions in spent nuclear fuel. Herein, the lattice and microstructural dependence of V-doped UO2 ceramics synthesized under conditions of − 420 kJ/mol and 1700 °C with elemental additions of 0, 500, 1000 and 2000 ppm was established using high-resolution synchrotron X-ray powder diffraction and scanning electron microscopy. Microstructural analysis indicates moderate growth of the UO2 grain structure is achieved with V doping, but not as appreciable as gold-standard Cr-doped UO2. Collected diffractograms, analysed using the Rietveld method, indicate similar levels of solubility of V in comparison to Cr-doped UO2 under like conditions. The results of this investigation were discussed in relation to current structural models of lattice incorporation of transition metals in UO2.

Graphical abstract