The pulse-thermal processing of NdFeB-based nanocomposite magnets

Z. Q. Jin; V. M. Chakka; Z. L. Wang; J. P. Liu; P. Kadolkar; Ronald D. Ott

doi:10.1007/s11837-006-0181-y

The pulse-thermal processing of NdFeB-based nanocomposite magnets

Z. Q. Jin, V. M. Chakka, Z. L. Wang, J. P. Liu, P. Kadolkar, Ronald D. Ott

Energy Science and Technology Directorat

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

4 Scopus citations

Abstract

Pulse-thermal processing (PTP) based on high-density plasma arc lamp technology has been utilized to crystallize melt-spun NdFeB-based amorphous ribbons to form magnetic nanocomposites consisting of Nd₂Fe₁₄B and α-Fe phases. After applying suitable pulses, the NdFeB-based ribbons were developed with hard magnetic properties. The highest coercivity can be obtained for ribbons with a thickness of 40 μm after PTP treatments consisting of a 400 A pulse for 0.25 s for ten times. The correlation between PTP parameters and magnetic properties indicates that PTP is an effective approach to control the structure and properties of nanostructured magnetic materials. Transmission-electron microscopy analysis revealed that the observed decoupling between the hard and the soft phases is related to large grain size in the samples, which is in turn related to different heating conditions in different regions of samples.

Original language	English
Pages (from-to)	46-49
Number of pages	4
Journal	JOM
Volume	58
Issue number	6
DOIs	https://doi.org/10.1007/s11837-006-0181-y
State	Published - Jun 2006

Funding

This work was supported by the U.S. Department of Defense/Defense Advanced Research Projects Agency through the Army Research Office under grant DAAD19-03-1-0038 and by the Multidisciplinary University Research Initiative program under grant N00014-05-1-0497. Portions of this research are sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, man- aged by UT-Battelle, LLC for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725.

Funders	Funder number
U.S. Department of Defense/Defense Advanced Research Projects Agency
U.S. Department of Energy	DE-AC05-00OR22725
Army Research Office	DAAD19-03-1-0038, N00014-05-1-0497
Oak Ridge National Laboratory

Access to Document

10.1007/s11837-006-0181-y

Cite this

@article{a66fa2bde66d4d6d97e52b1436181a9b,

title = "The pulse-thermal processing of NdFeB-based nanocomposite magnets",

abstract = "Pulse-thermal processing (PTP) based on high-density plasma arc lamp technology has been utilized to crystallize melt-spun NdFeB-based amorphous ribbons to form magnetic nanocomposites consisting of Nd2Fe14B and α-Fe phases. After applying suitable pulses, the NdFeB-based ribbons were developed with hard magnetic properties. The highest coercivity can be obtained for ribbons with a thickness of 40 μm after PTP treatments consisting of a 400 A pulse for 0.25 s for ten times. The correlation between PTP parameters and magnetic properties indicates that PTP is an effective approach to control the structure and properties of nanostructured magnetic materials. Transmission-electron microscopy analysis revealed that the observed decoupling between the hard and the soft phases is related to large grain size in the samples, which is in turn related to different heating conditions in different regions of samples.",

author = "Jin, {Z. Q.} and Chakka, {V. M.} and Wang, {Z. L.} and Liu, {J. P.} and P. Kadolkar and Ott, {Ronald D.}",

year = "2006",

month = jun,

doi = "10.1007/s11837-006-0181-y",

language = "English",

volume = "58",

pages = "46--49",

journal = "JOM",

issn = "1047-4838",

publisher = "Springer",

number = "6",

}

TY - JOUR

T1 - The pulse-thermal processing of NdFeB-based nanocomposite magnets

AU - Jin, Z. Q.

AU - Chakka, V. M.

AU - Wang, Z. L.

AU - Liu, J. P.

AU - Kadolkar, P.

AU - Ott, Ronald D.

PY - 2006/6

Y1 - 2006/6

N2 - Pulse-thermal processing (PTP) based on high-density plasma arc lamp technology has been utilized to crystallize melt-spun NdFeB-based amorphous ribbons to form magnetic nanocomposites consisting of Nd2Fe14B and α-Fe phases. After applying suitable pulses, the NdFeB-based ribbons were developed with hard magnetic properties. The highest coercivity can be obtained for ribbons with a thickness of 40 μm after PTP treatments consisting of a 400 A pulse for 0.25 s for ten times. The correlation between PTP parameters and magnetic properties indicates that PTP is an effective approach to control the structure and properties of nanostructured magnetic materials. Transmission-electron microscopy analysis revealed that the observed decoupling between the hard and the soft phases is related to large grain size in the samples, which is in turn related to different heating conditions in different regions of samples.

AB - Pulse-thermal processing (PTP) based on high-density plasma arc lamp technology has been utilized to crystallize melt-spun NdFeB-based amorphous ribbons to form magnetic nanocomposites consisting of Nd2Fe14B and α-Fe phases. After applying suitable pulses, the NdFeB-based ribbons were developed with hard magnetic properties. The highest coercivity can be obtained for ribbons with a thickness of 40 μm after PTP treatments consisting of a 400 A pulse for 0.25 s for ten times. The correlation between PTP parameters and magnetic properties indicates that PTP is an effective approach to control the structure and properties of nanostructured magnetic materials. Transmission-electron microscopy analysis revealed that the observed decoupling between the hard and the soft phases is related to large grain size in the samples, which is in turn related to different heating conditions in different regions of samples.

UR - http://www.scopus.com/inward/record.url?scp=33745316002&partnerID=8YFLogxK

U2 - 10.1007/s11837-006-0181-y

DO - 10.1007/s11837-006-0181-y

M3 - Article

AN - SCOPUS:33745316002

SN - 1047-4838

VL - 58

SP - 46

EP - 49

JO - JOM

JF - JOM

IS - 6

ER -

The pulse-thermal processing of NdFeB-based nanocomposite magnets

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this