HIGH SATURATION MAGNETIZATION AND SOFT MAGNETIC-PROPERTIES OF BCC FE-ZR-B ALLOYS WITH ULTRAFINE GRAIN-STRUCTURE

被引：449

作者：

SUZUKI, K ^{[1
]}

KATAOKA, N ^{[1
]}

INOUE, A ^{[1
]}

MAKINO, A ^{[1
]}

MASUMOTO, T ^{[1
]}

机构：

[1] ALPS ELECT CO LTD, RES & DEV, NAGAOKA 940, JAPAN

来源：

MATERIALS TRANSACTIONS JIM | 1990年 / 31卷 / 08期

关键词：

amorphous phase; crystallization; high saturation magnetization; iron-zirconium-boron alloy; permeability; soft magnetic property; ultrafine bcc phase;

D O I：

10.2320/matertrans1989.31.743

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new soft magnetic material exhibiting high magnetizations (B800) of 1.60 to 1.70 T under an applied field of 800 kA/m as well as high effective permeabilities (μe) of 13000 to 15000 at 1 kHz was produced in Fe-Zr-B alloys ranging from 5 to 7 at% Zr and 2 to 6%B. The material consists of a bcc phase produced by annealing the melt-spun Fe-Zr-B amorphous ribbons for 3.6 ks in the range of 873 to 923 K and the grain size is as small as 15 to 20 nm. The lattice parameter of the bcc phase is about 0.2870 nm which is larger than that of pure α-Fe. The crystallization-induced bcc phase is a metastable phase saturated with the solute elements and the annealing at temperatures above 973 K brings about a decomposition of the bcc phase to α-Fe and Fe3Zr, leading to a drastic decrease of μe. The bcc Fe-Zr-B alloys possess B800 and μe much higher than those of Fe-Si-B amorphous alloys and hence are highly attractive as a new soft magnetic material. © 1990, The Japan Institute of Metals. All rights reserved.

引用

页码：743 / 746

页数：4

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