FIELD: technological processes.
SUBSTANCE: invention relates to textured electrical steel plate and method of its production. Said steel comprises sheet steel, ceramic coating arranged on sheet steel, and an insulating tension coating oxide coating on the ceramic coating. Ceramic coating contains nitride and oxide. Nitride contains at least one element selected from a group consisting of Cr, Ti, Zr, Mo, Nb, Si, Al, Ta, Hf, W and Y. Oxide has a crystal structure related to corundum type. Young's modulus for ceramic coating according to measurement using nanoindentation method is not less than 230 GPa. Ceramic coating is characterized by an average coating thickness of not less than 0.01 mcm and not more than 0.30 mcm. Insulating tensioning oxide coating is characterized by tension making at least 10 MPa. In implementing the method, the ceramic coating is formed by ion-arc deposition.
EFFECT: enabling production of textured electromagnetic steel sheet with improved adhesion of coating film and magnetic characteristics.
16 cl, 7 dwg, 6 tbl
| Title |
Year |
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Number |
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