Fabrication and Characterization of Li2TiO3–Li4SiO4 Pebbles for Tritium Breeder
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- 作者：Maoqiao Xiang ; Yingchun Zhang ; Yun Zhang ; Shuya Liu ; Hui Liu…
- 关键词：Tritium breeder ; Li+ transferring process ; Li2TiO3–Li4SiO4
- 刊名：Journal of Fusion Energy
- 出版年：2015
- 出版时间：December 2015
- 年：2015
- 卷：34
- 期：6
- 页码：1341-1347
- 全文大小：1,971 KB
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Yingchun Zhang (1)
Yun Zhang (1)
Shuya Liu (1)
Hui Liu (1)
Chaofu Wang (1)
1. School of Materials Science and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, People’s Republic of China - 刊物类别：Engineering
- 刊物主题：Nuclear Engineering
- 出版者：Springer Netherlands
- ISSN：1572-9591
文摘
Lithium based ceramics have been regarded as the promising ceramic breeders of the test blanket modules. As lithium burn-up of ceramic pebbles in the fusion reactor will be limited to about 15 % due to Li transmutation. The phase and composition (Li+ transferring process) of Li2TiO3–Li4SiO4 ceramic pebbles with a certain amount of Li loss (?em class="EmphasisTypeItalic ">xLi2TiO3 and ?em class="EmphasisTypeItalic ">xLi4SiO4, x = 0, 5, 10, 20 %, molar ratio) were simulated by thermogravimetry and differential scanning calorimetry and X-ray diffractometer for the first time. The results showed that the Li+ of Li4SiO4 could move to Li4Ti5O12 to form Li2SiO3 and Li2TiO3 as the octahedral (16c) sites of Li4Ti5O12 are empty. In order to tailor the properties for optimization, 20 % Li2TiO3-0 % Li4SiO4 pebbles were fabricated by a graphite bed process. In combining these materials, the pebbles obtained reasonable pores, small grains, and relative high crush load. Keywords Tritium breeder Li+ transferring process Li2TiO3–Li4SiO4