Preparation of Li4SiO4 Ceramic Pebbles by Agar Method Using Li2SiO3 and Li2CO3 as Raw Materials

Mao Qiao Xiang; Ying Chun Zhang; Yun Zhang; Chao Fu Wang; Yong Hong Yu

doi:10.4028/www.scientific.net/KEM.697.814

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 697Preparation of Li4SiO4 Ceramic Pebbles by Agar...

Preparation of Li₄SiO₄ Ceramic Pebbles by Agar Method Using Li₂SiO₃ and Li₂CO₃ as Raw Materials

Abstract:

Lithium-containing ceramic pebbles, the likeliest tritium breeders in the future, are needed in the fusion reactor blankets. Currently, lithium orthosilicate (Li₄SiO₄) has been widely studied for tritium breeding pebble as it has 1250 °C melting temperature, 0.54 g/cm³ lithium concentration, and excellent tritium release performance. For simplifying reaction mechanism and the preparation technology to tailor the properties, the Li₄SiO₄ breeders were produced with an agar-gel technology using stable and cheap lithium metasilicate and lithium carbonate as starting materials. In addition, the solid (the prepared powder and ager) and liquid (deionized water) weight ration of the green pebble was also evaluated. The crush load, density, and open porosity achieved 36 N, 89.3% TD, and 4.5 %, respectively.

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Periodical:

Key Engineering Materials (Volume 697)

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814-817

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.697.814

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Online since:

July 2016

Authors:

Mao Qiao Xiang, Ying Chun Zhang*, Yun Zhang, Chao Fu Wang, Yong Hong Yu

Keywords:

Li₄SiO₄, Pebbles, Tritium Breeder

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