Title:
LAMINATED MAGNETIC MEMBER AND METHOD FOR MANUFACTURING LAMINATED MAGNETIC MEMBER
Document Type and Number:
WIPO Patent Application WO/2023/140303
Kind Code:
A1
Abstract:
The present invention provides: a laminated magnetic member for a motor, the member having low core loss characteristics even in a high-frequency band; and a method for manufacturing said laminated magnetic member for a motor. Provided is a laminated magnetic member provided with a plurality of quenched alloy strips and a resin layer made of resin and disposed between the quenched alloy strips. The laminated magnetic member is characterized in that the adhesive stress σ [MPa] represented by the following equation is 1.8 MPa or greater when the modulus of elasticity of the resin at room temperature is denoted by γ [MPa], the coefficient of linear expansion of the resin at room temperature is denoted by α1 [1/K], the curing temperature of the resin is denoted by Ta [K], the coefficient of linear contraction of the resin during curing is denoted by β, the thickness of the resin is denoted by h1 [um], the thickness of the quenched alloy strips is denoted by h2 [um], the coefficient of linear expansion of the quenched alloy strips is denoted by α2 [1/K], and room temperature is denoted by RT. σ = h1/h2 × γ × {(α1 - α2) × (Ta - RT) + β}
Inventors:
ISHIKAWA YUKI (JP)
NOGUCHI SHIN (JP)
AIMUTA KYOHEI (JP)
NOGUCHI SHIN (JP)
AIMUTA KYOHEI (JP)
Application Number:
PCT/JP2023/001418
Publication Date:
July 27, 2023
Filing Date:
January 18, 2023
Export Citation:
Assignee:
PROTERIAL LTD (JP)
International Classes:
H01F3/04; B32B7/025; C22C45/02; H01F1/153; H01F1/16; H01F41/02; H02K1/02
Domestic Patent References:
| WO2009125639A1 | 2009-10-15 | |||
| WO2019087932A1 | 2019-05-09 |
Foreign References:
| JPS61208811A | 1986-09-17 | |||
| JP2003007543A | 2003-01-10 |
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