| 摘要 |
PURPOSE:To lessen remarkedly the iron loss of a magnetic core at a high-frequency region by a method wherein an amorphous magnetic alloy thin strip, which has specified conditions about its thickness, is manufactured by a molten metal quenching method and the magnetic core is obtained using this thin strip. CONSTITUTION:An amorphous magnetic alloy thin strip of a composition, which is shown by the formula [(The t) and the (t) respectively show the maximum value of the thickness of the thin strip and the mean value of the thickness of the thin strip and the (t) corresponds to the mean values of W, (d), (l) and (p) (The W, the (d), the (l) and the (p) respectively show the weight, width, length and density of the thin strip.)]. is manufactured by a molten metal quenching method. That is, a molten alloy of this composition is made to jet on a single roll, which is rotated at high speed, by an argon gas pressure through a quartz tube nozzle, is quenched and a thin strip sample is manufactured. This sample is cut off, is wound on a bobbin made of aluminium, is subjected to heat treatment and thereafter, a magnetic core is obtained. Thereby, the iron loss of the magnetic core at a high-frequency region can be remarkedly lessened. |
