High-performance magnetostrictive composites with large particles volume fraction

Bochen Li; Tianli Zhang; Yuye Wu; Chengbao Jiang

doi:10.1016/j.jallcom.2019.07.164

High-performance magnetostrictive composites with large particles volume fraction

Bochen Li
, Tianli Zhang^*
, Yuye Wu
, Chengbao Jiang

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

An innovative two-step method is used to produce high-performance magnetostrictive polymer composites based on Tb_0.5Dy_0.5Fe_1.95 alloy crystallites. The alloy crystallites are dynamically magnetically oriented in liquid epoxy, and then concentrated by extruding excess epoxy before curing in a horizontal magnetic field. Composites with a large particle volume fraction of 57% and enhanced <111> particulate orientation were realized. The saturation magnetostriction and the energy density exceeded 1500 ppm and 16 kJ/m³, which were 15% and 60% greater than for static magnetically-oriented composites. The large alloy volume fraction results in a performance approaching that of the monolithic Tb-Dy-Fe alloy, but in a flexible shape and without the limited frequency range.

Original language	English
Pages (from-to)	1266-1270
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	805
DOIs	https://doi.org/10.1016/j.jallcom.2019.07.164
State	Published - 15 Oct 2019

Keywords

Energy density
Magnetostriction
Magnetostrictive composites
Particle volume fraction
Tb-Dy-Fe

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10.1016/j.jallcom.2019.07.164

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title = "High-performance magnetostrictive composites with large particles volume fraction",

abstract = "An innovative two-step method is used to produce high-performance magnetostrictive polymer composites based on Tb0.5Dy0.5Fe1.95 alloy crystallites. The alloy crystallites are dynamically magnetically oriented in liquid epoxy, and then concentrated by extruding excess epoxy before curing in a horizontal magnetic field. Composites with a large particle volume fraction of 57\% and enhanced <111> particulate orientation were realized. The saturation magnetostriction and the energy density exceeded 1500 ppm and 16 kJ/m3, which were 15\% and 60\% greater than for static magnetically-oriented composites. The large alloy volume fraction results in a performance approaching that of the monolithic Tb-Dy-Fe alloy, but in a flexible shape and without the limited frequency range.",

keywords = "Energy density, Magnetostriction, Magnetostrictive composites, Particle volume fraction, Tb-Dy-Fe",

author = "Bochen Li and Tianli Zhang and Yuye Wu and Chengbao Jiang",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = oct,

day = "15",

doi = "10.1016/j.jallcom.2019.07.164",

language = "英语",

volume = "805",

pages = "1266--1270",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - High-performance magnetostrictive composites with large particles volume fraction

AU - Li, Bochen

AU - Zhang, Tianli

AU - Wu, Yuye

AU - Jiang, Chengbao

PY - 2019/10/15

Y1 - 2019/10/15

N2 - An innovative two-step method is used to produce high-performance magnetostrictive polymer composites based on Tb0.5Dy0.5Fe1.95 alloy crystallites. The alloy crystallites are dynamically magnetically oriented in liquid epoxy, and then concentrated by extruding excess epoxy before curing in a horizontal magnetic field. Composites with a large particle volume fraction of 57% and enhanced <111> particulate orientation were realized. The saturation magnetostriction and the energy density exceeded 1500 ppm and 16 kJ/m3, which were 15% and 60% greater than for static magnetically-oriented composites. The large alloy volume fraction results in a performance approaching that of the monolithic Tb-Dy-Fe alloy, but in a flexible shape and without the limited frequency range.

AB - An innovative two-step method is used to produce high-performance magnetostrictive polymer composites based on Tb0.5Dy0.5Fe1.95 alloy crystallites. The alloy crystallites are dynamically magnetically oriented in liquid epoxy, and then concentrated by extruding excess epoxy before curing in a horizontal magnetic field. Composites with a large particle volume fraction of 57% and enhanced <111> particulate orientation were realized. The saturation magnetostriction and the energy density exceeded 1500 ppm and 16 kJ/m3, which were 15% and 60% greater than for static magnetically-oriented composites. The large alloy volume fraction results in a performance approaching that of the monolithic Tb-Dy-Fe alloy, but in a flexible shape and without the limited frequency range.

KW - Energy density

KW - Magnetostriction

KW - Magnetostrictive composites

KW - Particle volume fraction

KW - Tb-Dy-Fe

UR - https://www.scopus.com/pages/publications/85069730978

U2 - 10.1016/j.jallcom.2019.07.164

DO - 10.1016/j.jallcom.2019.07.164

M3 - 文章

AN - SCOPUS:85069730978

SN - 0925-8388

VL - 805

SP - 1266

EP - 1270

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

High-performance magnetostrictive composites with large particles volume fraction

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Keywords

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