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 journalArticlepeer-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 languageEnglish
Pages (from-to)1216-1223
Number of pages8
JournalMRS Communications
Volume8
Issue number3
DOIs
Publication statusPublished - Sept 1 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
Copyright © Materials Research Society 2018.

ASJC Scopus Subject Areas

  • General Materials Science

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