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EP0086485A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Wound iron core

Assignee: Proterial Ltd
•
Filing: 1983-02-14
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Granted: —
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Expires: 2003-02-14
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Abstract

Abstract 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/B 10 of 85% or higher in D.C. hysteresis curve. The Co-base amorphous magnetic alloy has a composition substantially expressed by: Co 100-a-b X a Y b 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%).

Inventors

  • 👤 Yasunobu Ogata
  • 👤 Yoshizo Sawada
  • 👤 Yoshihito Yoshizawa
  • 👤 Yasuo Arai
  • 👤 Shunsuke Arakawa

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 04:09
CPC Classifications
H; H01; H01F; H01F3/00; H01F3/04; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/153; H01F1/15316

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 67 words
A wound iron core formed by winding a thin strip of a soft magnetic alloy into a troidal form, characterized in that a Co-base amorphous magnetic alloy is used as said thin strip and that said thin strip is annealed in a magnetic field in the direction of excitation, so that said core exhibits a rectangle ratio Br/B io of 85% or higher in D.C. hysteresis curve.
Claim 2
Dependent Claim 67 words
A wound iron core formed by winding a thin strip of a soft magnetic alloy into a troidal form, characterized in that a Co-base amorphous magnetic alloy is used as said thin strip and that said thin strip is annealed in a magnetic field in the direction of excitation, so that said core exhibits a rectangle ratio Br/B io of 85% or higher in D.C. hysteresis curve.
Claim 3
Dependent Claim 98 words
A wound iron core according to claim 1, wherein said Co-base amorphous magnetic alloy has a composition substantially expressed by: 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%).
Claim 4
Dependent Claim 82 words
A wound iron core according to claim 1, wherein said Co-base amorphous magnetic alloy has a composition substantially expressed by: 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, and wherein the following conditions are met: 0 ≦ a ≦ 15 (atom%), 10 ≦ b ≦ 20 (atom%) and 7 ≦ c < 10.

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