Beryllide pebble fabrication of Be–Zr compositions as advanced neutron multipliers
Beryllide pebble fabrication of Be–Zr compositions as advanced neutron multipliers
复制标题
Be-Zr 组合物的铍化物卵石制造作为先进中子倍增器
DOI：
10.1016/j.fusengdes.2015.10.018
复制
发表时间：
2016
影响因子：
1.7
通讯作者：
K. Ochiai
中科院分区：
文献类型：
--
作者：
M. Nakamichi;Jae;K. Ochiai
聚变反应堆需要在高温下具有高稳定性的先进中子倍增器。铍金属间化合物（铍化物）具有广泛的高温应用潜力。从铍锆系铍石卵石批量生产的角度出发，对铍锆系铍石卵石的制备进行了研究。采用旋转电极法制备了高Be和Zr含量的等离子烧结电极，提高了电极的抗热震性，成功制备了卵石原型。从造粒检查的结果，它表明，造粒产率变化很大，这取决于等离子体烧结电极本身的组成。通过使用具有高Be和Zr含量的等离子烧结电极，Be 13 Zr小球具有84%的高造粒产率。此外，Be 13 Zr球显示出更好的氧化性能相比，纯Be球。
Fusion reactors require advanced neutron multipliers with high stability at high temperatures. Beryllium intermetallic compounds (beryllides) have a universally robust potential for high temperature use. Fabrication of beryllide pebbles of Be–Zr compositions was conducted from the viewpoint of pebble mass production. Prototypic pebbles were successfully fabricated using the plasma-sintered electrodes with high Be and Zr contents for enhanced of the thermal shock resistivity of the electrodes during granulation by a rotating electrode method. From the results of granulation examinations, it was revealed that granulation yields varied greatly depending on compositions of the plasma-sintered electrodes themselves. By utilizing plasma-sintered electrodes with high Be and Zr contents, Be13Zr pebbles had a high granulation yield of 84%. Moreover, the Be13Zr pebbles displayed better oxidation properties as compared to pure Be pebbles.