超细铁黄包硅技术与表面状态剖析

Silicon Coating Process of Ultrafing Geothite and Analysis of the Surface Structure

研究了铁黄包硅工艺过程，并在１００Ｌ反应釜中予以放大。所制得包硅磁粉形状规整，抗烧结性良好，有效地消除了孔洞，磁片性能明显优于未包硅磁粉。采用付立叶变换红外光谱和光电子能谱对包硅磁粉表面结构进行了剖析，确定了包硅磁粉界面化合物的结构。

The silicon coating process of geothite was studied and scaled up to 100 L. The magnetic powders made by this method are in good shape,good anti-sinter properties and little micropore. The magnetic property is much better than those powders which haven’t been coated.FTIR and XPS are used to inspect and analyse surface structure of silicon coated powders.The structure of interface compound was detennined.