固体氚增殖材料Li₂TiO₃制备研究进展

李运姣，徐  仓，李  林，王轩宇，孔  龙

(中南大学 冶金科学与工程学院，长沙 410083)

摘 要：富含⁶Li 的锂基陶瓷Li₂TiO₃以其可观的锂原子密度、低活化性、优异的化学稳定性、与结构材料良好的相容性以及良好的氚低温释放性能，被公认为是一种综合性能优良、最具前途的固体氚增殖剂之一。详细评述国内外固相反应法及各种湿化学法合成Li₂TiO₃粉末的研究现状，以及固相法、间接湿法和直接湿法制备Li₂TiO₃陶瓷小球的工艺现状及研究进展，并对其优缺点进行比较，探讨Li₂TiO₃陶瓷小球制备的未来发展方向。

关键词：Li₂TiO₃；氚增殖剂；陶瓷小球；制备方法

Research progress on fabrication of Li₂TiO₃ solid tritium breeder materials

LI Yun-jiao, XU Cang, LI Lin, WANG Xuan-yu, KONG Long

(School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China)

Abstract:Lithium titanate (Li₂TiO₃) enriched with ⁶Li is considered to be one of the most promising solid tritium breeders because of its reasonable lithium atom density, low activation, excellent chemical stability, good compatibility with structural materials and good tritium release characteristics at low temperatures. Recent studies on the research progress in synthesis of Li₂TiO₃ powders using solid reaction method and wet chemical methods were reviewed. The research progress in fabrication of Li₂TiO₃ pebbles using solid method, indirect-wet method and direct-wet method was reviewed and the advantages and disadvantages of different fabrication methods were compared. The developmental trends of the fabrication of Li₂TiO₃ pebbles were discussed.

Key words:lithium titanate (Li₂TiO₃); tritium breeder; ceramics pebbles; fabrication method