The influence of niobium on the sodium MOX fuel chemical interaction was studied by different heat treatments of airtight capsules containing fresh MOX, sodium and a niobium strip. The characterisation results evidenced a two-step process with first MOX oxidation and then MOX reduction. This result was interpreted by considering the formation of sodium niobiate that captures oxygen from the MOX. This interpretation is used to discuss the influence of niobium as fission product on the sodium –irradiated MOX fuel reaction.

中文翻译：

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裂变产物对钠-MOX燃料反应的热化学作用：以铌为例

通过对含有新鲜MOX，钠和铌带的气密胶囊进行不同的热处理，研究了铌对MOX钠燃料化学相互作用的影响。表征结果证明了一个两步过程，首先是MOX氧化，然后是MOX还原。通过考虑形成从MOX捕获氧气的次氯酸钠的形式可以解释该结果。该解释用于讨论铌作为裂变产物对钠辐照的MOX燃料反应的影响。