Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples

V. Chaudhary; Li Ping Tan; Vinay K. Sharma; R. V. Ramanujan

doi:10.1016/j.jallcom.2021.159318

Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples

V. Chaudhary, Li Ping Tan, Vinay K. Sharma, R. V. Ramanujan^*

^*Corresponding author for this work

Nanyang Technological University

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

34 Citations (Scopus)

Abstract

Soft magnets are extensively deployed in rotating electric machines. Accelerated development of new high Curie temperature, mechanically strong, magnetically soft magnets is urgently needed for next generation rotating electrical machines. The ternary Fe-Co-Ni alloy system was investigated. Spark plasma sintering (SPS) was employed to process compositionally graded (Ni-21Fe)-xCo samples. A combinatorial assessment of structural, magnetic, mechanical and electrical properties of sample sections was performed. Co-lean alloys exhibited a good combination of magnetic, mechanical, and electrical properties but low Curie temperatures. On the other hand, Co rich alloys exhibited elevated T_c, high M_s, and large hardness. An alloy library with a wide range of properties, M_s: 100–150 emu/g, H_c: 0.8–30 Oe, T_c: 571–1108 °C, ρ: 9–12.9 μΩ-cm, nanohardness: 0.96–1.56 GPa was developed. Thus, SPS processed samples can be employed for the accelerated screening of magnetic materials.

Original language	English
Article number	159318
Journal	Journal of Alloys and Compounds
Volume	869
DOIs	https://doi.org/10.1016/j.jallcom.2021.159318
Publication status	Published - Jul 15 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021 Elsevier B.V.

ASJC Scopus Subject Areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Keywords

Accelerated development
Fe-Co-Ni
Functionally graded materials
Soft magnets
Spark plasma sintering

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10.1016/j.jallcom.2021.159318

Cite this

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title = "Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples",

abstract = "Soft magnets are extensively deployed in rotating electric machines. Accelerated development of new high Curie temperature, mechanically strong, magnetically soft magnets is urgently needed for next generation rotating electrical machines. The ternary Fe-Co-Ni alloy system was investigated. Spark plasma sintering (SPS) was employed to process compositionally graded (Ni-21Fe)-xCo samples. A combinatorial assessment of structural, magnetic, mechanical and electrical properties of sample sections was performed. Co-lean alloys exhibited a good combination of magnetic, mechanical, and electrical properties but low Curie temperatures. On the other hand, Co rich alloys exhibited elevated Tc, high Ms, and large hardness. An alloy library with a wide range of properties, Ms: 100–150 emu/g, Hc: 0.8–30 Oe, Tc: 571–1108 °C, ρ: 9–12.9 μΩ-cm, nanohardness: 0.96–1.56 GPa was developed. Thus, SPS processed samples can be employed for the accelerated screening of magnetic materials.",

keywords = "Accelerated development, Fe-Co-Ni, Functionally graded materials, Soft magnets, Spark plasma sintering",

author = "V. Chaudhary and Tan, {Li Ping} and Sharma, {Vinay K.} and Ramanujan, {R. V.}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

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AU - Chaudhary, V.

AU - Tan, Li Ping

AU - Sharma, Vinay K.

AU - Ramanujan, R. V.

PY - 2021/7/15

Y1 - 2021/7/15

N2 - Soft magnets are extensively deployed in rotating electric machines. Accelerated development of new high Curie temperature, mechanically strong, magnetically soft magnets is urgently needed for next generation rotating electrical machines. The ternary Fe-Co-Ni alloy system was investigated. Spark plasma sintering (SPS) was employed to process compositionally graded (Ni-21Fe)-xCo samples. A combinatorial assessment of structural, magnetic, mechanical and electrical properties of sample sections was performed. Co-lean alloys exhibited a good combination of magnetic, mechanical, and electrical properties but low Curie temperatures. On the other hand, Co rich alloys exhibited elevated Tc, high Ms, and large hardness. An alloy library with a wide range of properties, Ms: 100–150 emu/g, Hc: 0.8–30 Oe, Tc: 571–1108 °C, ρ: 9–12.9 μΩ-cm, nanohardness: 0.96–1.56 GPa was developed. Thus, SPS processed samples can be employed for the accelerated screening of magnetic materials.

AB - Soft magnets are extensively deployed in rotating electric machines. Accelerated development of new high Curie temperature, mechanically strong, magnetically soft magnets is urgently needed for next generation rotating electrical machines. The ternary Fe-Co-Ni alloy system was investigated. Spark plasma sintering (SPS) was employed to process compositionally graded (Ni-21Fe)-xCo samples. A combinatorial assessment of structural, magnetic, mechanical and electrical properties of sample sections was performed. Co-lean alloys exhibited a good combination of magnetic, mechanical, and electrical properties but low Curie temperatures. On the other hand, Co rich alloys exhibited elevated Tc, high Ms, and large hardness. An alloy library with a wide range of properties, Ms: 100–150 emu/g, Hc: 0.8–30 Oe, Tc: 571–1108 °C, ρ: 9–12.9 μΩ-cm, nanohardness: 0.96–1.56 GPa was developed. Thus, SPS processed samples can be employed for the accelerated screening of magnetic materials.

KW - Accelerated development

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KW - Functionally graded materials

KW - Soft magnets

KW - Spark plasma sintering

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Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples

Abstract

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ASJC Scopus Subject Areas

Keywords

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