| 摘要 |
PURPOSE:To improve an iron loss without deterioration of space factor by applying insulating coat of an inorganic oxide consisting of at least one from among SiO2, Al2O3 and MgO on an amorphous alloy thin band by ion plating. CONSTITUTION:An insulating coat consisting of at least one from among SiO2, Al2O3 and MgO is applied to the surface of an amorphous alloy thin band, which is used for an iron core material for laminated or wound transformer by ion plating. It is appropriate that mean film thickness of an inorganic oxide is 0.01-0.5mum. Thus, the insulating material of the inorganic oxide can be coated with ion plating without heating the amorphous alloy thin band, thereby the insulating coat can be formed without embrittlement and crystallization of the amorphous alloy thin band by itself. |
