1前言一般说来,为了得到优良的软磁性能,即具有低的铁损和高的磁导率,电工钢尽可能存在少的析出物。在电工钢基体中的第二相质点就是析出物,通常是硫化物、碳化物、氮化物,其尺寸大小为10~400 nm。这种大小的质点对磁性有影响,不论是直接影响磁畴运动,还是间接通过对晶粒长大的 1 Introduction Generally speaking, in order to obtain excellent soft magnetic properties, that is, with low iron loss and high permeability, the electrical steel contains as few precipitates as possible. The second phase in the electrical steel matrix particles is precipitates, usually sulfide, carbide, nitride, the size of 10 ~ 400 nm. The size of the particles of the magnetic impact, whether it is a direct impact on the magnetic domain movement, or indirectly through the grain growth