| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a grain oriented silicon steel sheet which has a good adhesion property of insulating films and has extremely low iron loss and a method for manufacturing the same. <P>SOLUTION: A silicon steel sheet is subjected to finish annealing, and an oxide film mainly composed of a Si-based oxide is formed on the surface of its base iron by 0.15 to 0.15 g per 1 m<SP>2</SP>on both sides in terms of an oxygen basis weight. A ceramic film of 0.1 to 3 μm thickness mainly composed of nitrides and/or carbides of one or ≥2 kinds selected from the group of Si, Ti, Zr, Hf, V, Nb, Ta, Mn, Cr, Mo, W, Co, Ni, and Al or B are formed thereon by CVD (Chemical Vapor Deposition), PVD (Physical Vapor Deposition), etc., and further the insulating films composed mainly of the oxides are formed by applying coating and further baking. <P>COPYRIGHT: (C)2004,JPO |
