Enhancement of soft magnetic properties by nanocrystallization in modified cast iron

Rantej Bali; Eric Fleury; Sangho Lim

doi:10.1016/j.stam.2005.02.004

Enhancement of soft magnetic properties by nanocrystallization in modified cast iron

Rantej Bali, Eric Fleury, Sangho Lim

Department of Materials Science and Engineering

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

5 Citations (Scopus)

Abstract

A cast iron composition has been modified by additions of Al, B, Y and Cu to the Fe-C master alloy in order to achieve glass forming ability as well as good magnetic properties. Amorphous ribbons were synthesized by rapidly quenching at 10⁶ K/s and the devitrification process was controlled by varying the Y and Cu contents so as to achieve a composite structure of bcc Fe nanocrystals in an amorphous matrix. An improvement of saturation magnetization was observed by annealing the as-quenched ribbons. However, coercivity does not necessarily improve upon annealing, and therefore, the annealing should be judiciously scheduled. Effect of minor impurities in cast iron on the coercivity and saturation of these alloys was found to be insignificant.

Original language	English
Pages (from-to)	256-260
Number of pages	5
Journal	Science and Technology of Advanced Materials
Volume	6
Issue number	3-4 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.stam.2005.02.004
Publication status	Published - 2005 Apr

Keywords

Cast iron
Fe amorphous alloy
Nanocrystallization
Soft magnetic properties

ASJC Scopus subject areas

Materials Science(all)

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10.1016/j.stam.2005.02.004

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title = "Enhancement of soft magnetic properties by nanocrystallization in modified cast iron",

abstract = "A cast iron composition has been modified by additions of Al, B, Y and Cu to the Fe-C master alloy in order to achieve glass forming ability as well as good magnetic properties. Amorphous ribbons were synthesized by rapidly quenching at 106 K/s and the devitrification process was controlled by varying the Y and Cu contents so as to achieve a composite structure of bcc Fe nanocrystals in an amorphous matrix. An improvement of saturation magnetization was observed by annealing the as-quenched ribbons. However, coercivity does not necessarily improve upon annealing, and therefore, the annealing should be judiciously scheduled. Effect of minor impurities in cast iron on the coercivity and saturation of these alloys was found to be insignificant.",

keywords = "Cast iron, Fe amorphous alloy, Nanocrystallization, Soft magnetic properties",

author = "Rantej Bali and Eric Fleury and Sangho Lim",

note = "Funding Information: This work was supported by a grant of the Korea Institute of Science and Technology.",

year = "2005",

month = apr,

doi = "10.1016/j.stam.2005.02.004",

language = "English",

volume = "6",

pages = "256--260",

journal = "Science and Technology of Advanced Materials",

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TY - JOUR

T1 - Enhancement of soft magnetic properties by nanocrystallization in modified cast iron

AU - Bali, Rantej

AU - Fleury, Eric

AU - Lim, Sangho

N1 - Funding Information: This work was supported by a grant of the Korea Institute of Science and Technology.

PY - 2005/4

Y1 - 2005/4

N2 - A cast iron composition has been modified by additions of Al, B, Y and Cu to the Fe-C master alloy in order to achieve glass forming ability as well as good magnetic properties. Amorphous ribbons were synthesized by rapidly quenching at 106 K/s and the devitrification process was controlled by varying the Y and Cu contents so as to achieve a composite structure of bcc Fe nanocrystals in an amorphous matrix. An improvement of saturation magnetization was observed by annealing the as-quenched ribbons. However, coercivity does not necessarily improve upon annealing, and therefore, the annealing should be judiciously scheduled. Effect of minor impurities in cast iron on the coercivity and saturation of these alloys was found to be insignificant.

AB - A cast iron composition has been modified by additions of Al, B, Y and Cu to the Fe-C master alloy in order to achieve glass forming ability as well as good magnetic properties. Amorphous ribbons were synthesized by rapidly quenching at 106 K/s and the devitrification process was controlled by varying the Y and Cu contents so as to achieve a composite structure of bcc Fe nanocrystals in an amorphous matrix. An improvement of saturation magnetization was observed by annealing the as-quenched ribbons. However, coercivity does not necessarily improve upon annealing, and therefore, the annealing should be judiciously scheduled. Effect of minor impurities in cast iron on the coercivity and saturation of these alloys was found to be insignificant.

KW - Cast iron

KW - Fe amorphous alloy

KW - Nanocrystallization

KW - Soft magnetic properties

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U2 - 10.1016/j.stam.2005.02.004

DO - 10.1016/j.stam.2005.02.004

M3 - Article

AN - SCOPUS:23944482897

SN - 1468-6996

VL - 6

SP - 256

EP - 260

JO - Science and Technology of Advanced Materials

JF - Science and Technology of Advanced Materials

IS - 3-4 SPEC. ISS.

ER -

Enhancement of soft magnetic properties by nanocrystallization in modified cast iron

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Keywords

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