Tellurium was investigated as a potential additive to metallic fuel (e.g. U-10Zr) to mitigate fuel-cladding chemical interaction (FCCI). A primary cause of FCCI is the lanthanide fission products migrating to the fuel periphery and interacting with cladding, Te therefore was used to bind the lanthanides into stable compounds in the U-10Zr. The present work investigates the microstructures of as-cast and annealed U-10Zr-4Te and U-10Zr-4Te-4Ce alloys (weight percent) with scanning electron microscope and transmission electron microscopy. Tellurium was found to bind Ce and form CeTe compound, which will mitigate lanthanides migration to the cladding.

研究了碲作为金属燃料（例如U-10Zr）的潜在添加剂，以减轻燃料包壳化学相互作用（FCCI）。FCCI的主要原因是镧系元素裂变产物迁移到燃料外围并与覆层相互作用，因此，Te被用于将镧系元素结合到U-10Zr中的稳定化合物中。本工作通过扫描电子显微镜和透射电子显微镜研究铸态和退火态的U-10Zr-4Te和U-10Zr-4Te-4Ce合金（重量百分比）的显微组织。碲被发现与Ce结合并形成CeTe化合物，这将减轻镧系元素向包层的迁移。