Preparation of metal coated fuel particles using the fluidized bed-chemical vapor deposition method

YANG Xu; CHENG Xinyu; LIU Rongzheng; LIU Bing; SHAO Youlin; LIU Malin

doi:10.16511/j.cnki.qhdxxb.2021.25.024

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Journal of Tsinghua University(Science and Technology) ›› 2021, Vol. 61 ›› Issue (4) : 361-366. DOI: 10.16511/j.cnki.qhdxxb.2021.25.024

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Preparation of metal coated fuel particles using the fluidized bed-chemical vapor deposition method

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Abstract

Fuel particles are coated with metals such as Nb, Zr, or W for advanced nuclear industry fuels. Coated particles with Nb and Zr coatings were fabricated using fluidized bed-chemical vapor deposition (FB-CVD) with investigations of the thermal transport characteristics of the precursors. The results showed that the metal coating improves the mechanical properties of the coated particles. The investigation studied the effects of the deposition temperature, precursor transport and oxidation on the metal deposition rate. The metal coating layer enhances the crushing strength, but has poor oxidation resistance, so it cannot be used in an oxidizing environment.

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coated particle / FB-CVD / Nb coating / Zr coating

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YANG Xu, CHENG Xinyu, LIU Rongzheng, LIU Bing, SHAO Youlin, LIU Malin. Preparation of metal coated fuel particles using the fluidized bed-chemical vapor deposition method[J]. Journal of Tsinghua University(Science and Technology). 2021, 61(4): 361-366 https://doi.org/10.16511/j.cnki.qhdxxb.2021.25.024

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