含6.5%Si的电工钢是软磁特性最佳的电工钢,但钢质硬脆,很难用轧制法轧成薄板。高硅电工钢作为高频铁芯可降低铁损,但磁感强度低,不利于电源的小型化和高效化。为了兼具高强磁感和低铁损特性,日本JFE钢铁集团平谷多津彦等人开发了γ区浸硅技术,这时钢板中心硅的扩散系数比表面小两个数量级, Electrical steel containing 6.5% Si is the best soft electrical properties of electrical steel, but the steel is hard and brittle, it is difficult to roll rolling into thin plates. High silicon electrical steel as a high-frequency core can reduce iron loss, but the magnetic induction intensity is low, is not conducive to the power of the miniaturization and high efficiency. In order to combine high magnetic induction and low iron loss properties, Japan JFE Steel Group Pinggu Du Jinyan developed γ-zone immersion silicon technology. At this time, the diffusion coefficient of silicon in the center of the steel plate is two orders of magnitude smaller than the surface,