| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: textured electrotechnical steel plate has insulating film not containing chrome; at that, insulating film includes phosphate and one or more colloid substances chosen from non-organic compounds Fe, Ni, Co, Cu, Sr, and Mo containing metal elements of 0.06 to 2.10 mol per mol of one or more types of primary phosphates chosen from Al, Mg, Ca, Ni, and Co on the basis of metal ions and having the size of grains of colloid substances Fe, Ni, Co, Cu, Sr, and Mo of 50 nm or less. ^ EFFECT: obtaining insulating film for textured electrotechnical steel plate, which has high corrosion resistance, annealing resistance, film tension. ^ 5 cl, 2 dwg, 4 tbl, 3 ex |
