Fabrication and Characterization of Li4SiO4 Ceramic Pebbles Doped with Y2O3 and Nb2O5

Man Wang; Mao Qiao Xiang; Ying Chun Zhang

doi:10.4028/www.scientific.net/SSP.281.28

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HomeSolid State PhenomenaSolid State Phenomena Vol. 281Fabrication and Characterization of Li4SiO4...

Fabrication and Characterization of Li₄SiO₄ Ceramic Pebbles Doped with Y₂O₃and Nb₂O₅

Abstract:

Tritium breeder blanket has been considered as one of the most important components of thermonuclear fusion reactor. Recently, Li₄SiO₄ has been regarded as one of the favored ceramics breeders as it exhibits excellent tritium release properties. In order to further improve the comprehensive properties of Li₄SiO₄ pebbles, the grain size and crush load of Li₄SiO₄ pebbles doped with Y₂O₃ and Nb₂O₅ were systematically studied in this work. The results showed that the relative density of Li₄SiO₄ pebbles was increased to 87.2% and the crush load was increased from 43N to 48N when Y₂O₃ doping was used. In view of inhibiting grain growth and increasing the crush load and relative density of Li₄SiO₄ pebbles, the effect of Nb₂O₅ doping was better than that of Y₂O₃ doping.

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Periodical:

Solid State Phenomena (Volume 281)

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28-33

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.281.28

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Online since:

August 2018

Authors:

Man Wang, Mao Qiao Xiang, Ying Chun Zhang*

Keywords:

Crush Load, Grain Size, Li₄SiO₄ Pebbles, Relative Density, Tritium Breeder Blanket

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