Optimization of sintering conditions of advanced tritium breeder pebbles fabricated by the emulsion method
Optimization of sintering conditions of advanced tritium breeder pebbles fabricated by the emulsion method
复制标题
乳液法先进氚增殖卵石烧结条件优化
DOI：
10.1016/j.fusengdes.2015.04.023
复制
发表时间：
2015
影响因子：
1.7
通讯作者：
T. Hoshino
中科院分区：
文献类型：
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作者：
T. Hoshino
示范电厂（DEMO）反应堆需要具有高热稳定性的先进氚增殖剂。具有过量Li（Li 2 + xTiO 3 +y）的Li 2 TiO 3已被开发作为先进氚增殖剂的材料。综合考虑包层的氚释放特性和填充因子，确定了最佳的卵石粒径为1 mm，烧结后的晶粒尺寸<5 μm。因此，在本研究中，最佳烧结条件进行调查，以获得这些目标值。影响晶粒生长的主要因素被认为是在凝胶颗粒中的粘合剂的存在。这种剩余的粘合剂与Li 2 + xTiO 3 + y中过量的Li反应，生成Li 2CO 3，这促进了晶粒生长。为了抑制Li 2CO 3的生成，煅烧的Li 2 + xTiO 3 +ypebbles在真空和随后的1%H2-He气氛条件下烧结。烧结后的Li_（2 + x）TiO_（3+）型微球直径为1.07 mm，表面和横截面上的平均晶粒尺寸<5 μm。结果表明，采用乳液法成功地制备了具有最佳性能的Li 2 + xTiO 3 +ypebbles。
Demonstration power plant (DEMO) reactors require advanced tritium breeders with high thermal stability. Li2TiO3with excess Li (Li2+xTiO3+y) has been developed as a material for an advanced tritium breeder. Considering the tritium release characteristics and the packing factor of the blanket, the optimum pebble diameter and grain size after sintering were determined to be 1 mm and <5 μm, respectively. Therefore, optimum sintering conditions were surveyed in the present study to obtain these target values. The predominant factor affecting grain growth is assumed to be the presence of binder in the gel particles. This remaining binder reacts with the excess Li in the Li2+xTiO3+yand Li2CO3is generated, which promotes grain growth. To inhibit the generation of Li2CO3, calcined Li2+xTiO3+ypebbles were sintered under vacuum and subsequent 1% H2–He atmosphere conditions. The diameter of the sintered Li2+xTiO3+ypebbles was 1.07 mm, and the average grain size on the surfaces and cross sections was <5 μm. The results presented show that Li2+xTiO3+ypebbles with optimum characteristics were successfully fabricated using the emulsion method.
影响因子：
3.1
作者：
T. Hanada;M. Nishikawa;T. Kanazawa;H. Yamasaki;N. Yamashita;S. Fukada
通讯作者：
T. Hanada;M. Nishikawa;T. Kanazawa;H. Yamasaki;N. Yamashita;S. Fukada
DOI：
10.1016/j.fusengdes.2007.07.005
发表时间：
2007-10
期刊：
--
影响因子：
--
作者：
T. Hoshino;M. Yasumoto;K. Tsuchiya;K. Hayashi;H. Nishimura;A. Suzuki;T. Terai
通讯作者：
T. Hoshino;M. Yasumoto;K. Tsuchiya;K. Hayashi;H. Nishimura;A. Suzuki;T. Terai