High density La-Fe-Si based magnetocaloric composites with excellent properties produced by spark plasma sintering

X. C. Zhong; S. M. Wu; X. T. Dong; Y. X. Li; J. H. Huang; C. L. Liu; H. Zhang; Y. L. Huang; H. Y. Yu; W. Q. Qiu; Z. W. Liu; M. L. Zhong; Z. C. Zhong; R. V. Ramanujan

doi:10.1016/j.mseb.2022.115717

High density La-Fe-Si based magnetocaloric composites with excellent properties produced by spark plasma sintering

X. C. Zhong^*, S. M. Wu, X. T. Dong, Y. X. Li, J. H. Huang, C. L. Liu, H. Zhang, Y. L. Huang, H. Y. Yu, W. Q. Qiu, Z. W. Liu, M. L. Zhong, Z. C. Zhong, R. V. Ramanujan

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

La(Fe,Si)₁₃ based magnetocaloric composites were prepared by spark plasma sintering (SPS), followed by annealing. The microstructure, mechanical and magnetocaloric properties were investigated. With increasing SPS temperature (T_SPS) below 1373 K, the content of (La,Pr)(Fe,Co,Si)₁₃ majority phase increased, while the content of minority phase α-Fe decreased. The increase of T_SPS from 973 K to 1373 K greatly improved the composite density, and the density sharply increased from ∼ 68 % to 98 %. After SPS at 1273 K/5 min followed by 1323 K/24 h annealing, high content of 89.35 wt% of the desired (La,Pr)(Fe,Co,Si)₁₃ phase was obtained in LaFe_11.6Si_1.4/10wt%Pr₂Co₇ composites. A large increase of Curie temperature (T_C) from 196 K to 297 K was observed. The maximum magnetic entropy change (−ΔS_M)^max reached 2.3 J/(kg‧K) under 2 T magnetic field. ∼ 97 % of full density, excellent compressive strength of ∼ 1GPa and high thermal conductivity of 17.68 W/m∙K were exhibited. Thus, a route to produce high density La-Fe-Si based magnetocaloric composites with excellent mechanical properties and thermal conductivity, good (−ΔS_M)^max and adjustable T_C by short time spark plasma sintering followed by annealing was demonstrated.

Original language	English
Article number	115717
Journal	Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume	280
DOIs	https://doi.org/10.1016/j.mseb.2022.115717
Publication status	Published - Jun 2022
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2022 Elsevier B.V.

ASJC Scopus Subject Areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Keywords

Annealing
High density
La(Fe,Si) based composites
Magnetocaloric effect
Spark plasma sintering

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10.1016/j.mseb.2022.115717

Cite this

Zhong, X. C., Wu, S. M., Dong, X. T., Li, Y. X., Huang, J. H., Liu, C. L., Zhang, H., Huang, Y. L., Yu, H. Y., Qiu, W. Q., Liu, Z. W., Zhong, M. L., Zhong, Z. C., & Ramanujan, R. V. (2022). High density La-Fe-Si based magnetocaloric composites with excellent properties produced by spark plasma sintering. Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 280, Article 115717. https://doi.org/10.1016/j.mseb.2022.115717

@article{85ea46bf127640ba80e25d02418ad9ee,

title = "High density La-Fe-Si based magnetocaloric composites with excellent properties produced by spark plasma sintering",

abstract = "La(Fe,Si)13 based magnetocaloric composites were prepared by spark plasma sintering (SPS), followed by annealing. The microstructure, mechanical and magnetocaloric properties were investigated. With increasing SPS temperature (TSPS) below 1373 K, the content of (La,Pr)(Fe,Co,Si)13 majority phase increased, while the content of minority phase α-Fe decreased. The increase of TSPS from 973 K to 1373 K greatly improved the composite density, and the density sharply increased from ∼ 68 % to 98 %. After SPS at 1273 K/5 min followed by 1323 K/24 h annealing, high content of 89.35 wt% of the desired (La,Pr)(Fe,Co,Si)13 phase was obtained in LaFe11.6Si1.4/10wt%Pr2Co7 composites. A large increase of Curie temperature (TC) from 196 K to 297 K was observed. The maximum magnetic entropy change (−ΔSM)max reached 2.3 J/(kg‧K) under 2 T magnetic field. ∼ 97 % of full density, excellent compressive strength of ∼ 1GPa and high thermal conductivity of 17.68 W/m∙K were exhibited. Thus, a route to produce high density La-Fe-Si based magnetocaloric composites with excellent mechanical properties and thermal conductivity, good (−ΔSM)max and adjustable TC by short time spark plasma sintering followed by annealing was demonstrated.",

keywords = "Annealing, High density, La(Fe,Si) based composites, Magnetocaloric effect, Spark plasma sintering",

author = "Zhong, {X. C.} and Wu, {S. M.} and Dong, {X. T.} and Li, {Y. X.} and Huang, {J. H.} and Liu, {C. L.} and H. Zhang and Huang, {Y. L.} and Yu, {H. Y.} and Qiu, {W. Q.} and Liu, {Z. W.} and Zhong, {M. L.} and Zhong, {Z. C.} and Ramanujan, {R. V.}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = jun,

doi = "10.1016/j.mseb.2022.115717",

language = "English",

volume = "280",

journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",

issn = "0921-5107",

publisher = "Elsevier BV",

}

Zhong, XC, Wu, SM, Dong, XT, Li, YX, Huang, JH, Liu, CL, Zhang, H, Huang, YL, Yu, HY, Qiu, WQ, Liu, ZW, Zhong, ML, Zhong, ZC & Ramanujan, RV 2022, 'High density La-Fe-Si based magnetocaloric composites with excellent properties produced by spark plasma sintering', Materials Science and Engineering B: Solid-State Materials for Advanced Technology, vol. 280, 115717. https://doi.org/10.1016/j.mseb.2022.115717

TY - JOUR

T1 - High density La-Fe-Si based magnetocaloric composites with excellent properties produced by spark plasma sintering

AU - Zhong, X. C.

AU - Wu, S. M.

AU - Dong, X. T.

AU - Li, Y. X.

AU - Huang, J. H.

AU - Liu, C. L.

AU - Zhang, H.

AU - Huang, Y. L.

AU - Yu, H. Y.

AU - Qiu, W. Q.

AU - Liu, Z. W.

AU - Zhong, M. L.

AU - Zhong, Z. C.

AU - Ramanujan, R. V.

PY - 2022/6

Y1 - 2022/6

N2 - La(Fe,Si)13 based magnetocaloric composites were prepared by spark plasma sintering (SPS), followed by annealing. The microstructure, mechanical and magnetocaloric properties were investigated. With increasing SPS temperature (TSPS) below 1373 K, the content of (La,Pr)(Fe,Co,Si)13 majority phase increased, while the content of minority phase α-Fe decreased. The increase of TSPS from 973 K to 1373 K greatly improved the composite density, and the density sharply increased from ∼ 68 % to 98 %. After SPS at 1273 K/5 min followed by 1323 K/24 h annealing, high content of 89.35 wt% of the desired (La,Pr)(Fe,Co,Si)13 phase was obtained in LaFe11.6Si1.4/10wt%Pr2Co7 composites. A large increase of Curie temperature (TC) from 196 K to 297 K was observed. The maximum magnetic entropy change (−ΔSM)max reached 2.3 J/(kg‧K) under 2 T magnetic field. ∼ 97 % of full density, excellent compressive strength of ∼ 1GPa and high thermal conductivity of 17.68 W/m∙K were exhibited. Thus, a route to produce high density La-Fe-Si based magnetocaloric composites with excellent mechanical properties and thermal conductivity, good (−ΔSM)max and adjustable TC by short time spark plasma sintering followed by annealing was demonstrated.

AB - La(Fe,Si)13 based magnetocaloric composites were prepared by spark plasma sintering (SPS), followed by annealing. The microstructure, mechanical and magnetocaloric properties were investigated. With increasing SPS temperature (TSPS) below 1373 K, the content of (La,Pr)(Fe,Co,Si)13 majority phase increased, while the content of minority phase α-Fe decreased. The increase of TSPS from 973 K to 1373 K greatly improved the composite density, and the density sharply increased from ∼ 68 % to 98 %. After SPS at 1273 K/5 min followed by 1323 K/24 h annealing, high content of 89.35 wt% of the desired (La,Pr)(Fe,Co,Si)13 phase was obtained in LaFe11.6Si1.4/10wt%Pr2Co7 composites. A large increase of Curie temperature (TC) from 196 K to 297 K was observed. The maximum magnetic entropy change (−ΔSM)max reached 2.3 J/(kg‧K) under 2 T magnetic field. ∼ 97 % of full density, excellent compressive strength of ∼ 1GPa and high thermal conductivity of 17.68 W/m∙K were exhibited. Thus, a route to produce high density La-Fe-Si based magnetocaloric composites with excellent mechanical properties and thermal conductivity, good (−ΔSM)max and adjustable TC by short time spark plasma sintering followed by annealing was demonstrated.

KW - Annealing

KW - High density

KW - La(Fe,Si) based composites

KW - Magnetocaloric effect

KW - Spark plasma sintering

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U2 - 10.1016/j.mseb.2022.115717

DO - 10.1016/j.mseb.2022.115717

M3 - Article

AN - SCOPUS:85127855877

SN - 0921-5107

VL - 280

JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

M1 - 115717

ER -

High density La-Fe-Si based magnetocaloric composites with excellent properties produced by spark plasma sintering

Abstract

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ASJC Scopus Subject Areas

Keywords

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