| 摘要 |
PROBLEM TO BE SOLVED: To reduce the iron loss of a laminated magnetic material and to secure a mechanical strength of the laminated magnetic material to such a degree that the material can endure machining, etc., by laminating many thin ribbons of a magnetic material, such as the amorphous material, one upon another by using an insulating binder. SOLUTION: A laminated magnetic material is formed by binding a plurality of magnetic materials 1 with each other using a binder 2. Each magnetic material 1 has a thickness of 3-50 μm and surface roughness of <5 μm and the binder 2 has such a property that the binder 2 dissolves in a solvent and remains as a solid content when the solvent is evaporated. When the magnetic material 1 is alternately laminated with the binder 2, the thickness of each layer of the binder 2 is adjusted to 1-10 μm, so that the thickness may become larger than the surface roughness of the material 1. The laminated magnetic material is constituted of thin belts of the magnetic material 1 and the insulating binder 2. Two kinds of magnetic materials 1 composed of an amorphous ribbon body manufactured by the melt quenching method and a cold-rolled permalloy thin riffon are prepared. The amorphous material includes an Fe-Cu-Nb-Si system, Fe-B-Si-C system, etc. |
