镍纳米粉的阳极弧等离子体制备与粒度研究  

Particle Size Characterization of Ni Nanopowders Grown by Anodic Arc Plasma

作　　者：魏智强[1] 夏天东[2] 戴剑锋[1] 冯旺军[1] 王青[1] 闫鹏勋[3] 

机构地区：[1]兰州理工大学理学院,兰州730050 [2]兰州理工大学甘肃省有色金属新材料国家重点实验室,兰州730050 [3]兰州大学物理科学与技术学院,兰州730000

出　　处：《真空科学与技术学报》2005年第6期418-421,443,共5页Chinese Journal of Vacuum Science and Technology

基　　金：甘肃省自然科学基金资助项目(No.3ZS042-B25-017)

摘　　要：采用阳极弧放电等离子体方法成功制备了高纯镍纳米粉体并对其粒度进行表征.采用X射线衍射(XRD)测试样品的物相和结构,并用Scherrer公式计算晶粒粒度;采用透射电子显微镜(TEM)分析样品的形貌、结构和粒度分布;采用表面吸附仪测定样品的N2吸附-脱附等温线,并由BET理论模型计算出样品的比表面积和颗粒粒度.实验结果表明:本法所制备的镍纳米的晶体结构与相应的块体材料基本相同,为fcc结构的晶态,呈规则的球形链状分布,比表面积为14.23m2/g,粒径范围分布在(20～70) nm,平均粒径为47 nm,三种方法测得的结果基本一致.Microstructures and particle size distribution of the high purity Ni nano-powders, grown by anodic arc discharge plasma deposition, were studied with X-ray diffraction（XRD） and transmission electron spectroscopy（TEM）.The nitrogen absorption-desorption isotherm of the powder was evahuated with volumetric absorption analyzer. The results show that spherical shaped grains interconnects to form a bead-shaped chain with each crystal grain of fee structure,similar to that of the bulk. Its specific surface area is 14.23 m^2/g,and its size distribution hinges from 20 nm to 70 um with an averaged particle diameter of 47 um.

关 键 词：Ni纳米粉 粒度 XRD法 TEM法 BET法 

分 类 号：TG146.15[一般工业技术—材料科学与工程]