Japan, Sept. 18 -- DAIDO STEEL CO LTD has got intellectual property rights for 'SOFT MAGNETIC FOIL BODY AND METHOD FOR PRODUCING THE SAME.' Other related details are as follows:
Application Number: JP,2022-153710
Category (FI): C22C38/00,303@S,C22F1/10@E,C22F1/00,604,C22F1/00,681,C22F1/00,691@C,C22F1/00,685@Z,C21D6/00@C,C22F1/00,660@C,C22F1/00,622,C21D9/00@S,H01F27/25,H01F41/02@Z,C22C19/03@E,H01F1/147,116,C22F1/00,691@B
Stage: PROBLEM TO BE SOLVED: To provide a soft magnetic foil body comprising an Fe-Ni alloy that is excellent in manufacturability, capable of suppressing eddy current loss, and also excellent in high frequency permeability, and a method for producing the same.SOLUTION: A soft magnetic foil body comprises an Fe-Ni alloy containing, by mass, 35 to 80% Ni, and the balance Fe. The soft magnetic foil body is characterized to have an internal texture comprising a columnar crystal with the [111] axis oriented in a thickness direction, and also to have a DC relative permeability of 3,500 or more and an attenuation frequency of 150 kHz or more. A method for producing a soft magnetic foil body is a method in which an Fe-Ni alloy containing, by mass, 35 to 80% Ni and the balance Fe is melted, applied on a rotating cooling roll, and solidified into a continuous strip-like foil body. The method is characterized to control the rotation of the cooling roll such that the soft magnetic foil body has an internal texture comprising a columnar crystal with the [111] axis oriented in a thickness direction and the degree of orientation of the [111] axis of the columnar crystal in a thickness-direction cross section is 90 or more.SELECTED DRAWING: Figure 2 (Grant)
Filing Date: Sept. 27, 2022
Publication Date: April 8, 2024
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
