| 摘要 |
PURPOSE:To reliably obtain ultra-low iron loss and high permeability of the title core by a method wherein the core is made thicker by laminating and adhering an amorphous alloy thin strip using a bonding agent having low heat-resisting temperature, and after the above-mentioned thick plate has been formed into a core, it is annealed in a magnetic field. CONSTITUTION:A plurality of amorphous magnetic alloy thin strips are adhered using a bonding agent having the heat-resisting temperature of 300 deg.C or below, and the obtained laminated plate is formed into a wound core type or a stacked type core. Then, an annaling treatment is performed thereon at the temperature range between the heatresisting temperature or above of said bonding agent and the crystallizing temperature or below of the amorphous magnetic alloy thin strip. Pertaining to the bonding agent, a bonding agent of low heat-resisting property which will easily be decomposed by heat or evaporated in the annealing process ordinarily performed in the temperature range of 300-400 deg.C is used. As a result, even when a distortion is generated inside the core on which a winding work is finished, stress is alleviated in a ribbon in association with the vanishment of the bonding agent, and then the formation of magnetic induction anisotropy makes progress. As a result, no distortion remains in the core finally, and excellent magnetic characteristics can be secured. |
