Alps Electric Co., Ltd.

Other

Kiyonori Suzuki

Akihiro Makino

Akihisa Inoue

Tsuyoshi Masumoto

Noriyuki Kataoka

Shoji Yoshida

Katsuaki Hangai

The present invention provides an Fe-base soft magnetic alloy and a laminated magnetic core formed by using the alloy which contains Fe as a main component and at least one element M and B selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Mo and W, in which at least 50% of the crystalline structure comprises fine crystalline grains having an average crystal grain size of 30 nm or less and a body-centered cubic structure, and the fracture strain at 300.degree. C. or less is 1. The ratios of the components Fe, and elements M and B are 75 to 93 atomic %, 4 to 9 atomic % and 0.5 to 18 atomic %, respectively. The alloy may contain other additive elements such as Cr, Ru, Hr, Ir, Si, Al, Ge, Ga and the like.

FE-base soft magnetic alloy and laminated magnetic core by using the same

An Fe-based soft magnetic alloy having a high saturated magnetic flux density and having a composition represented by formula (I) below:

Fe based soft magnetic alloy, magnetic materials containing same, and

The present invention relates to a method of stably manufacturing a Fe-base soft magnetic alloy having steps of subjecting an amorphous alloy mainly composed of Fe to heat treatment in which the amorphous alloy is heated to 400.degree. to 750.degree. C. at a heating rate of 1.0.degree. C./minute or higher so that at least 50% or more of the structure of the amorphous alloy is made of fine crystalline grains formed into a body-centered cubic structure and having an average grain size of crystal of 30 nm or smaller as to have a high magnetic permeability and saturation magnetic flux density.

Method of manufacturing Fe-base soft magnetic alloy

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Nagaoka, Japan

Kiyonori Suzuki