MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Structure and Magnetic Properties of As-Quenched Fe87−xZr3.5Nb3.5B6Cux Ribbons
Bo LiHongwei QinDongliang ZhaoRui ZhangJifan Hu
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2009 Volume 50 Issue 8 Pages 1915-1918

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Abstract

The influences of Cu addition upon structure and magnetic properties of as-quenched Fe87−xZr3.5Nb3.5B6Cux ribbons are investigated. An appropriate content of Cu addition improves the nucleation of α-Fe through increasing the number-density of nucleation sites in as-quenched Fe87−xZr3.5Nb3.5B6Cux ribbons. However, at high Cu dopants (x≥3.5) the nucleation effect of α-Fe becomes weak, possibly connected with the reduction of effective number-density of Cu clusters due to the coarsening effect of them. Among as-quenched Fe87−xZr3.5Nb3.5B6Cux ribbons prepared with a wheel speed of 35 m/s, the as-quenched Fe84Zr3.5Nb3.5B6Cu3 (x=3) ribbon with the largest permeability (2.4×104 at 1 kHz) and saturation magnetic induction (1.18 T), possibly has the highest number-density of Cu clusters which can serve as nucleation sites for α-Fe grains.

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© 2009 The Japan Institute of Metals and Materials
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