摘要
将微波场交替引入到球磨场中, 采用自行设计的多频微波联合辅助球磨装置, 以氧化铜和铁粉为原料, 没有经过后续烧结作用, 在10 h内直接制备铜铁氧体超微粉体.采用X射线衍射仪 (XRD) 分析产物的物相并计算粉体尺寸, 采用透射电镜 (TEM) 观察产物的颗粒形貌, 结果表明, 在微波辅助球磨过程中, 氧化铜固体与铁粉固体在水溶液中直接发生了化学反应, 形成了尖晶石型铁氧体粉末Cu Fe2O4.通过选区电子衍射 (SAED) 观察发现, 铜铁氧体粉末在没有经过后续热处理的情况下, 已经具有较好的晶型, 通过透射电镜放大观察发现, 所制备的铜铁氧体纳米粉体分散性好, 优于普通球磨法.
Abstract
In this article, microwave field is introduced into mechanical field and the microwave assisted ball milling technical is formed. We synthesized CuFe2 O4 ultrafine powder successfully in only 10 h without any following heat treatment that is usually needed in general mechanical chemistry. In the experiment, the installation for preparing the spinel ferrite powder is multi-frequency microwave assisted ball milling reactor designed by the author. The phase analysis and the particles sized were all characterized by X-ray diffraction (XRD), and the particle morphology was analyzed by transmission electron microscopy (TEM). Through the study, we found that in the process of microwave alternately assisted ball milling experiment the chemical reaction of Fe and CuO in the form of solid state take place and the CuFe2 O4 formed. With the help of SAED, it was found that the crystal of spnel ferrite particle were excellent without any following heating treatment. Through the result showed by TEM, we also found that prepared copper ferrite powder is well dispersed, which is superior to the ordinary ball milling method.
基金项目
贵州省科技厅联合基金(黔科合LH字[2015]7086)
贵州省科技厅联合基金(20157089)
NETL
NSTL
维普
万方数据