(19)
(11) EP 0 086 485 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.05.1985 Bulletin 1985/20

(43) Date of publication A2:
24.08.1983 Bulletin 1983/34

(21) Application number: 83101409

(22) Date of filing: 14.02.1983
(84) Designated Contracting States:
DE NL

(30) Priority: 15.02.1982 JP 2234982

(71) Applicant: HITACHI METALS, LTD.
 ()

(72) Inventors:
  • Ogata, Yasunobu
     ()
  • Sawada, Yoshizo
     ()
  • Yoshizawa, Yoshihito
     ()
  • Arai, Yasuo
     ()
  • Arakawa, Shunsuke
     ()

   


(54) Wound iron core


(57) A wound iron core formed by winding a thin strip of a soft magnetic alloy into a triodal form, characterized in that a Co-base amorphous magnetic alloy is used as the thin strip and that the thin strip is annealed in a magnetic field in the direction of excitation, so that the core exhibits a rectangle ratio Br/B10 of 85% or higher in D.C. hysteresis curve. The Co-base amorphous magnetic alloy has a composition substantially expressed by: Co100-a-bXaYb where X represents one, two or more elements selected from a group consisting of Ti, V, Cr, Mn, Fe, Ni, Zr, Nb, Mo, Ru, Hf, Ta, W, Y, Ce, Pr, Nd, Sm, Eu, Gd, Tb and Dy, while Y represents one, two or more elements selected from a group consisting of B, C, Al, Si, P and Ge, and wherein the following conditions are met: 0≦ a ≦15 (atom%) and 14≦ b ≦30 (atom%).





Search report