Novel processing of Cu-bonded La-Ce-Fe-Co-Si magnetocaloric composites for magnetic refrigeration by low-temperature hot pressing

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

doi:10.1557/mrc.2018.105

Novel processing of Cu-bonded La-Ce-Fe-Co-Si magnetocaloric composites for magnetic refrigeration by low-temperature hot pressing

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

^*Corresponding author for this work

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

19 Citations (Scopus)

Abstract

We report on a novel processing route to prepare La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Cu bulk composites by low-temperature hot pressing. With increasing copper content, the compressive strength of the composites first decrease and then increase owing to the buffering effect of copper, but the magnetocaloric effect reduces to some extent. Copper addition improves the thermal conductivity of the composites, which compensates for the decrease in thermal conductivity due to porosity. A relatively large entropy change of 5.75-7.19 J/(kg K) at 2 T near the Curie temperature (249 K), good thermal conductivity of 7.51-15.55 W/(m·K), and improved compressive strength of 151.1-248.0 MPa make these composites attractive magnetic refrigeration materials.

Original language	English
Pages (from-to)	1216-1223
Number of pages	8
Journal	MRS Communications
Volume	8
Issue number	3
DOIs	https://doi.org/10.1557/mrc.2018.105
Publication status	Published - Sept 1 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
Copyright © Materials Research Society 2018.

ASJC Scopus Subject Areas

General Materials Science

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10.1557/mrc.2018.105

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title = "Novel processing of Cu-bonded La-Ce-Fe-Co-Si magnetocaloric composites for magnetic refrigeration by low-temperature hot pressing",

abstract = "We report on a novel processing route to prepare La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Cu bulk composites by low-temperature hot pressing. With increasing copper content, the compressive strength of the composites first decrease and then increase owing to the buffering effect of copper, but the magnetocaloric effect reduces to some extent. Copper addition improves the thermal conductivity of the composites, which compensates for the decrease in thermal conductivity due to porosity. A relatively large entropy change of 5.75-7.19 J/(kg K) at 2 T near the Curie temperature (249 K), good thermal conductivity of 7.51-15.55 W/(m·K), and improved compressive strength of 151.1-248.0 MPa make these composites attractive magnetic refrigeration materials.",

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

note = "Publisher Copyright: Copyright {\textcopyright} Materials Research Society 2018.",

year = "2018",

month = sep,

day = "1",

doi = "10.1557/mrc.2018.105",

language = "English",

volume = "8",

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journal = "MRS Communications",

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publisher = "Cambridge University Press",

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T1 - Novel processing of Cu-bonded La-Ce-Fe-Co-Si magnetocaloric composites for magnetic refrigeration by low-temperature hot pressing

AU - Peng, D. R.

AU - Zhong, X. C.

AU - Huang, J. H.

AU - Zhang, H.

AU - Huang, Y. L.

AU - Dong, X. T.

AU - Jiao, D. L.

AU - Liu, Z. W.

AU - Ramanujan, R. V.

PY - 2018/9/1

Y1 - 2018/9/1

N2 - We report on a novel processing route to prepare La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Cu bulk composites by low-temperature hot pressing. With increasing copper content, the compressive strength of the composites first decrease and then increase owing to the buffering effect of copper, but the magnetocaloric effect reduces to some extent. Copper addition improves the thermal conductivity of the composites, which compensates for the decrease in thermal conductivity due to porosity. A relatively large entropy change of 5.75-7.19 J/(kg K) at 2 T near the Curie temperature (249 K), good thermal conductivity of 7.51-15.55 W/(m·K), and improved compressive strength of 151.1-248.0 MPa make these composites attractive magnetic refrigeration materials.

AB - We report on a novel processing route to prepare La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Cu bulk composites by low-temperature hot pressing. With increasing copper content, the compressive strength of the composites first decrease and then increase owing to the buffering effect of copper, but the magnetocaloric effect reduces to some extent. Copper addition improves the thermal conductivity of the composites, which compensates for the decrease in thermal conductivity due to porosity. A relatively large entropy change of 5.75-7.19 J/(kg K) at 2 T near the Curie temperature (249 K), good thermal conductivity of 7.51-15.55 W/(m·K), and improved compressive strength of 151.1-248.0 MPa make these composites attractive magnetic refrigeration materials.

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DO - 10.1557/mrc.2018.105

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Novel processing of Cu-bonded La-Ce-Fe-Co-Si magnetocaloric composites for magnetic refrigeration by low-temperature hot pressing

Abstract

Bibliographical note

ASJC Scopus Subject Areas

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