La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Sn42Bi58 magnetocaloric composites prepared by low temperature hot pressing

X. T. Dong; X. C. Zhong; D. R. Peng; J. H. Huang; H. Zhang; D. L. Jiao; Z. W. Liu; R. V. Ramanujan

doi:10.1016/j.jallcom.2017.12.108

La_0.8Ce_0.2(Fe_0.95Co_0.05)_11.8Si_1.2/Sn₄₂Bi₅₈ magnetocaloric composites prepared by low temperature hot pressing

X. T. Dong, X. C. Zhong^*, D. R. Peng, J. H. Huang, H. Zhang, D. L. Jiao, Z. W. Liu, R. V. Ramanujan

^*Corresponding author for this work

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

43 Citations (Scopus)

Abstract

La_0.8Ce_0.2(Fe_0.95Co_0.05)_11.8Si_1.2/Sn₄₂Bi₅₈ magnetic refrigeration bulk composites were prepared by low temperature hot pressing (HP) technique at 138 °C. Sn-Bi eutectic alloy (Sn₄₂Bi₅₈) was used as binder. During the process of HP, the molten Sn₄₂Bi₅₈ alloy filled the gaps between the particles. Hence, the composites retained good magnetocaloric properties. The density of the composites gradually increased at larger HP pressure. The thermal conductivity and mechanical property of the composites also improved remarkably. By controlling the processing conditions, a series of La_0.8Ce_0.2(Fe_0.95Co_0.05)_11.8Si_1.2/Sn₄₂Bi₅₈ bulk composites with high entropy change values of 5.57–6.70 J/(kg·K) at 2 T, high thermal conductivity of 10.72–19.64 W/(m·K) and compressive strength of 189–303 MPa were obtained. The present results indicate that low temperature HP technique can be used in mass production of high performance magnetocaloric materials.

Original language	English
Pages (from-to)	568-574
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	737
DOIs	https://doi.org/10.1016/j.jallcom.2017.12.108
Publication status	Published - Mar 15 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

ASJC Scopus Subject Areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Keywords

Composite materials
La-Ce-Fe-Co-Si/Sn-Bi bulk composites
Low temperature hot pressing
Magnetic refrigeration composites

Access to Document

10.1016/j.jallcom.2017.12.108

Cite this

@article{d1be3804d9b2451892acf62c1464cf61,

title = "La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Sn42Bi58 magnetocaloric composites prepared by low temperature hot pressing",

abstract = "La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Sn42Bi58 magnetic refrigeration bulk composites were prepared by low temperature hot pressing (HP) technique at 138 °C. Sn-Bi eutectic alloy (Sn42Bi58) was used as binder. During the process of HP, the molten Sn42Bi58 alloy filled the gaps between the particles. Hence, the composites retained good magnetocaloric properties. The density of the composites gradually increased at larger HP pressure. The thermal conductivity and mechanical property of the composites also improved remarkably. By controlling the processing conditions, a series of La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Sn42Bi58 bulk composites with high entropy change values of 5.57–6.70 J/(kg·K) at 2 T, high thermal conductivity of 10.72–19.64 W/(m·K) and compressive strength of 189–303 MPa were obtained. The present results indicate that low temperature HP technique can be used in mass production of high performance magnetocaloric materials.",

keywords = "Composite materials, La-Ce-Fe-Co-Si/Sn-Bi bulk composites, Low temperature hot pressing, Magnetic refrigeration composites",

author = "Dong, {X. T.} and Zhong, {X. C.} and Peng, {D. R.} and Huang, {J. H.} and H. Zhang and Jiao, {D. L.} and Liu, {Z. W.} and Ramanujan, {R. V.}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2018",

month = mar,

day = "15",

doi = "10.1016/j.jallcom.2017.12.108",

language = "English",

volume = "737",

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journal = "Journal of Alloys and Compounds",

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publisher = "Elsevier BV",

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T1 - La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Sn42Bi58 magnetocaloric composites prepared by low temperature hot pressing

AU - Dong, X. T.

AU - Zhong, X. C.

AU - Peng, D. R.

AU - Huang, J. H.

AU - Zhang, H.

AU - Jiao, D. L.

AU - Liu, Z. W.

AU - Ramanujan, R. V.

PY - 2018/3/15

Y1 - 2018/3/15

N2 - La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Sn42Bi58 magnetic refrigeration bulk composites were prepared by low temperature hot pressing (HP) technique at 138 °C. Sn-Bi eutectic alloy (Sn42Bi58) was used as binder. During the process of HP, the molten Sn42Bi58 alloy filled the gaps between the particles. Hence, the composites retained good magnetocaloric properties. The density of the composites gradually increased at larger HP pressure. The thermal conductivity and mechanical property of the composites also improved remarkably. By controlling the processing conditions, a series of La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Sn42Bi58 bulk composites with high entropy change values of 5.57–6.70 J/(kg·K) at 2 T, high thermal conductivity of 10.72–19.64 W/(m·K) and compressive strength of 189–303 MPa were obtained. The present results indicate that low temperature HP technique can be used in mass production of high performance magnetocaloric materials.

AB - La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Sn42Bi58 magnetic refrigeration bulk composites were prepared by low temperature hot pressing (HP) technique at 138 °C. Sn-Bi eutectic alloy (Sn42Bi58) was used as binder. During the process of HP, the molten Sn42Bi58 alloy filled the gaps between the particles. Hence, the composites retained good magnetocaloric properties. The density of the composites gradually increased at larger HP pressure. The thermal conductivity and mechanical property of the composites also improved remarkably. By controlling the processing conditions, a series of La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Sn42Bi58 bulk composites with high entropy change values of 5.57–6.70 J/(kg·K) at 2 T, high thermal conductivity of 10.72–19.64 W/(m·K) and compressive strength of 189–303 MPa were obtained. The present results indicate that low temperature HP technique can be used in mass production of high performance magnetocaloric materials.

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