纳米粉体的分散技术与科学应用

Dispersion Technology and Scientific Utilization on Nanopowder

研究了不同材质的7种纳米粉体中单个纳米粒子的结构特征;探讨了极稀的水(无水乙醇)溶液中纳米粒子的单分散状态及不同基底表面的纳米涂层技术;获得了纳米粉体中单个纳米粒子的三维结构及相关信息。不锈钢基底表面的涂层达10层时其表面粗糙度为最小,薄膜呈现出平滑的表面。即使达20层时,不锈钢基底上三种金属氧化物薄膜的表面粗糙度依次约为2.946、3.006和4.246nm,仍然属于nm尺度范围,为纳米涂层技术和纳米粉体的应用研究提供了直接的科学依据。

The structure characterizations of single nanoparticles in seven different nanopowders were presented; The mono-dispersion state of nano particles was examined in extremely dilute powder solution and the nano coating technology was also investigated on different substrates; The 3D structures and related informations of single nanoparticles were obtained. The RMS of ten-layer-coating on the steel substrate reaches the minimum value and the surface remains smooth. The RMS values are only 2.946, 3.006 and 4.246 nm for Mg（OH）2, MgO and SiO2 coating films on the steel substrate respectively. Even when the number of the coating layers increases up to 20, they are still in nano sizes. These results provide direct scientific supports for applications of the nano coating technology and the nano powder.