Microstructure and emission properties of nanometer Ce-W material
Microstructure and emission properties of nanometer Ce-W material
复制标题
纳米Ce-W材料的微观结构和发射性能
DOI：
10.1016/j.jallcom.2006.07.081
复制
发表时间：
2007-07
影响因子：
6.2
通讯作者：
Zuo, Tieyong
中科院分区：
文献类型：
--
作者：
Zou, Jingxia;Xi, Xiaoli;Nie, Zuoren;Yang, Jiancan;Zuo, Tieyong
采用冷冻干燥法制备了纳米铈钨复合材料。利用扫描电镜（SEM）和“原位”发射光谱（AES）研究了材料的微观结构和表面性能，并测定了材料的发射特性。研究发现，纳米材料具有相对较小的晶体颗粒，平均尺寸在50nm左右。基体分析结果表明，材料中的铈在亚微米尺度上均匀分布，证明了铈的扩散能力得到了提高。在高温下，随着铈和氧含量的增加，表面活性层同时增厚。结果表明，与微米级Ce-W材料相比，纳米级Ce-W材料具有优异的发射特性。
Nanometer Ce-W composite materials have been prepared by the method of freeze-drying. Microstructure and surface properties of materials were investigated by SEM and “in situ” AES and emission characteristics have been determined. It is found that the nanometer materials have relatively small crystal particles with average dimensions in the order of 50nm. Due to the results of matrix analysis, the cerium in the materials is uniformly distributed on submicron scale, which proves that the diffusion ability of cerium has been increased. Under high temperature, the active layer on the surface thickens simultaneously with the increase of cerium and oxygen. As a result, nanometer Ce-W materials exhibit excellent emission characteristics compared with those of micron-sized Ce-W materials.
登录
查看更多内容
影响因子：
1.6
作者：
D. Goebel;A. Forrester;S. Johnston
通讯作者：
D. Goebel;A. Forrester;S. Johnston
DOI：
10.1016/j.msea.2004.11.052
发表时间：
2005-03
影响因子：
6.4
作者：
X. Xi;Z. Nie;Jiancan Yang;Xiaotian Fu;Wen Wang;T. Zuo
通讯作者：
X. Xi;Z. Nie;Jiancan Yang;Xiaotian Fu;Wen Wang;T. Zuo
影响因子：
3.6
作者：
M. Ushio;A. Sadek;F. Matsuda
通讯作者：
M. Ushio;A. Sadek;F. Matsuda
影响因子：
3
作者：
Hui Zhang;Xianfeng Chen;Zhimao Yang;B. Ding
通讯作者：
Hui Zhang;Xianfeng Chen;Zhimao Yang;B. Ding