Development of fabrication technologies for advanced breeding functional materials For DEMO reactors

被引：42
作者：
Hoshino, Tsuyoshi [1 ]
Nakamichi, Masaru [1 ]
机构：
[1] Japan Atom Energy Agcy, Fus Res & Dev Directorate, Blanket Irradiat & Anal Grp, Rokkasho, Aomori 0393212, Japan
来源：
FUSION ENGINEERING AND DESIGN | 2012年 / 87卷 / 5-6期
关键词：
Tritium breeder; Neutron multiplier; Lithium titanate; Beryllium intermetallic compound; Broader approach; LI2TIO3; PEBBLES; BLANKET; ITER; BERYLLIUM; DENSITY;
D O I：
10.1016/j.fusengdes.2012.01.005
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Demonstration power reactors (DEMOS) require advanced tritium breeders and neutron multipliers that have high stability at high temperatures. Lithium titanate (Li2TiO3) is one of the most promising candidates among tritium breeders because of its tritium release characteristics. Li2TiO3 with additional Li (Li2+xTiO3+y) has increased stability in a reducing atmosphere at high temperatures. In this work, Li2+xTiO3+y pebbles were fabricated using the emulsion method, which is a sol-gel method. The raw material for the fabrication of Li2+xTiO3+y pebbles was synthesized from a mixture of LiOH center dot H2O and H2TiO3 at specific ratios. The average diameter and the sphericity of the pebbles fabricated by the emulsion method were 1.40 mm and 1.02, respectively. In addition, beryllium (Be) intermetallic compounds (beryllides) are promising materials for advanced neutron multipliers. The results of the trial fabrications in this work showed that beryllides of Be-Ti and Be-V intermetallics could be synthesized using the plasma sintering method. (C) 2012 Elsevier B.V. All rights reserved.
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页码：486 / 492
页数：7
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