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Invention Publication
CN107109656A 电磁钢板 有权

电磁钢板
Abstract:
电磁钢板(1)包含电磁钢的母材(2)和形成于母材(2)的表面的绝缘被膜(3)。在绝缘被膜(3)的与厚度方向平行的截面的50面积％以上的区域中，满足3个条件(1.8≤3[Fe]/[P]+ΣnM[M]/[P]≤3.6、0.6≤ΣnM[M]/[P]≤2.4及0.6≤3[Fe]/[P]≤2.4)。[Fe]为Fe的比例(原子％)，[P]为P的比例(原子％)，[M]为Al、Zn、Mg及Ca各自的比例(原子％)，nM为Al、Zn、Mg及Ca各自的价数。
Abstract(English):

Provided is an electromagnetic steel sheet (1) that comprises: a base material (2) for an electromagnetic steel; and an insulating coating film (3) that is formed on the surfaces of the base material (2). Three conditions (1.8<=3[Fe]/[P] + Sigma(n)M[M]/[P]<=3.6, 0.6<=Sigma(n)M[M]/[P] <=2.4 and 0.6<=3[Fe]/[P]<=2.4) are satisfied in a region constituting at least 50% of the area of a cross section parallel to the thickness direction of the insulating coating film (3). [Fe] represents the proportion of Fe (at.%), [P] represents the proportion of P (at.%), [M] represents the respective proportions of Al, Zn, Mg and Ca (at.%) and nM represents the respective valences of Al, Zn, Mg and Ca.

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