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Document Type and Number:
Japanese Patent JP2018164073
Kind Code:
PROBLEM TO BE SOLVED: To provide an Fe-based amorphous alloy thin band with excellent soft magnetic characteristics whose iron loss (CL) is 0.13 W/kg or less and whose apparent power (VA) is 0.33 VA/kg or less although a flux density (B1) is 1.5 T or more under a predetermined condition for the purpose of further reducing an iron loss and apparent power.SOLUTION: An Fe-based amorphous alloy thin band is a thin band formed from Fe of 80at% or more, B of 12at% or more and Si with a sum total including the B of 17 at% or more and 20 at% or less, and a thickness of 20 μm or more and 30 μm or less and a width of 100 mm or more. At least one surface of the thin band is formed with a pattern formed from a point-like or a linear recessed part with a period in a longitudinal direction of 50 mm over and 100 mm or less, and a surface roughness Rz excluding a pattern formation part of the surface formed with the pattern is 4.0 μm or less.SELECTED DRAWING: Figure 1

Ota Motoki (1-2-70, Konan, Minato-ku, Tokyo Inside of Hitachi Metals, Ltd.)
Hajime Itagaki (1-2-70, Konan, Minato-ku, Tokyo Inside of Hitachi Metals, Ltd.)
Application Number:
Publication Date:
October 18, 2018
Filing Date:
December 21, 2017
Export Citation:
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Hitachi Metals, Ltd. (1-2-70, Konan, Minato-ku, Tokyo)
International Classes:
H01F1/153; C21D6/00; C22C45/02; H01F3/04