Abstract
In this study, Li2O porous ceramic pebbles were synthesized by decomposing the xLi2CO3-yLiNO3 precursor pebbles at low temperature. This efficient decomposition reaction was mainly attributed to the two-stage support decomposition of Li2CO3 and LiNO3. The results indicated that the molar ratio of Li2CO3 and LiNO3 will directly affect the phase composition, pore structure and crush load of sintered pebbles. The high-purity Li2O ceramic pebbles sintered from Li2CO3–LiNO3 precursor pebbles at 730 °C exhibits the open porosity of 24.8 ± 0.7%. The crush load of the ceramic reaches 21.18 ± 1.38 N although the structure was porous. The Li2O porous ceramics fabricated in this study will have potential application in tritium breeder materials.
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