期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 590, 期 -, 页码 440-445出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.12.084
关键词
Lithium orthosilicate; Tritium breeder; Rice husk ash; Solution combustion synthesis
资金
- Board of Research on Fusion Science and Technology (BRFST)
- Institute of Plasma Research (IPR), Bhat, Gandhinagar, India
Phase pure lithium orthosilicate (Li4SiO4) was prepared by the solution - combustion technique as well as solid state method using rice husk ash (RHA) as silica source. It was found that by controlling the metal to citrate ratio of the starting solution, phase pure powder can be prepared at 650 degrees C. Whereas in solid state method, calcination at 800 degrees C was required to achieve phase purity. The particle size of Li4SiO4 powder (prepared at C/M = 1.4) was found to be 100-200 nm with low surface area (1.83 m(2)/gm). It was found that Li4SiO4 powder can be sintered at a temperature as low as 900 degrees C with a density similar to 83% of the theoretical density. In case of solid state method prepared powder, maximum 80% of the theoretical density could be achieved. Phase stability in the sintered sample was studied. (C) 2013 Elsevier B.V. All rights reserved.
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