Fabrication and characteristics of Li4SiO4 pebbles by a novel capillary-based microfluidic wet process
Fabrication and characteristics of Li4SiO4 pebbles by a novel capillary-based microfluidic wet process
复制标题
基于毛细管的新型微流体湿法工艺制备 Li4SiO4 卵石及其特性
DOI：
10.1016/j.jnucmat.2013.05.020
复制
发表时间：
2013-09-01
影响因子：
3.1
通讯作者：
Serra, Christophe A.
中科院分区：
文献类型：
--
作者：
Li, Jiao-Long;Zhu, Yu-Wei;Serra, Christophe A.
首次研究了利用微流控技术合成用作氚增殖剂的Li 4SiO 4卵石。以C2 H3 O2 Li中心点2 H（2）O粉末和SiO2-溶胶为原料，Li与Si的摩尔比为4。在基于毛细管的微流体装置中容易形成高度均匀的尺寸液滴。然后将液滴转化为凝胶卵石。在750 ℃下反应4小时后，获得指定的Li 4SiO 4小球。所制备的Li 4SiO 4小球的尺寸可以精确控制在几十微米到一毫米的范围内。所制备的Li 4SiO 4微米球具有窄的粒径分布（CV = 3.9%）和良好的球形度（1.05）。密度为82% T.D.系统地进行了卵石的物相分析、热分析、形貌观察和烧结行为研究。XRD分析表明成功合成了Li 4SiO 4，并利用电子束曝光机研究了卵石的微观结构。(C)2013爱思唯尔有限公司版权所有。
The synthesis of Li4SiO4 pebbles used as tritium breeder by a microfluidic technology was studied for the first time. C2H3O2Li center dot 2H(2)O powder and SiO2-sol were used as the raw materials with the Li and Si molar ratio of 4. Highly uniform size droplets were formed easily in a capillary-based microfluidic device. The droplets were then converted into gel pebbles. After reaction at 750 degrees C for 4 h, the designated Li4SiO4 pebbles were obtained. The size of as-prepared Li4SiO4 pebbles can be controlled precisely in the size range from tens of micrometer to a millimeter. The obtained Li4SiO4 micrometer-pebbles possess a narrow size distribution (CV = 3.9%) and favorable shape with good sphericity (1.05). The density is 82% T.D. Phase analysis, thermal analysis, morphological observation and sintering behavior of the pebbles were carried out systematically. The XRD patterns revealed that Li4SiO4 were successfully obtained and the pebble's microstructure was studied by electron beam lithography machine. (C) 2013 Elsevier B.V. All rights reserved.