传统铁基软磁材料〔1〕　主要包括三大类,一是电工纯铁,二是电工硅钢,三是铁铬软磁合金。它们的典型成份列于下表。电工纯铁是一种低碳纯铁,在所有软磁合金中它的耐蚀性最低,具有良好的直流软磁性能。适用于磁路铁心和继电器以及电控制的螺线管中。真空精炼生产的高级磁心纯铁 Traditional iron-based soft magnetic materials [1] includes three main categories, one is electrician pure iron, the second is electrical silicon steel, three is iron chromium soft magnetic alloy. Their typical ingredients are listed in the following table. Electrician pure iron is a low-carbon pure iron, which has the lowest corrosion resistance of all soft magnetic alloys and has good DC soft magnetic properties. Suitable for magnetic core and relay, and solenoid controlled solenoids. Vacuum refining the production of advanced core pure iron