Superior comprehensive properties of LaFe11.8Si1.2/Ce60Co40 magnetocaloric composites

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外文摘要：LaFe11.8Si1.2/10 wt％Ce60Co40 composites were prepared by spark plasma sintering and subsequent diffusion annealing.A novel core-shell structure is observed with the LaFe11.8Si1.2 particles as the core and the(La,Ce)2(Fe,Co,Si)17(2:17)phase as the shell.As diffusion annealing time(ta)increases,this core-shell structure is replaced by the formation of the(La,Ce)1(Fe,Co,Si)13 phase.Annealing at 1323 K for 12 h results in samples with(-△SM)max of 9.30 J/(kg.K)(△μ0H=2 T),good mechanical properties((σbc)max=402 MPa,ε=4.21％)and thermal conductivity of 8.7 W/(m·K).Thus,bulk composites with excellent comprehensive properties for magnetic refrigeration are obtained in this work.

外文关键词：

LaFe11.8Si1.2/Ce60Co40 compositesSpark plasma sinteringDiffusion annealingMicrostructure evolutionMagnetocaloric effectRare earths

作者：

Xichun Zhong、Yuanxin Li、Yucai Wu、Jiaohong Huang、Cuilan Liu、Jian Liu、Zhongwu Liu、Minglong Zhong、Zhenchen Zhong、R.V.Ramanujan

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作者单位：

School of Materials Science and Engineering,South China University of Technology,Guangzhou,510640,China

Baotou Research Institute of Rare Earths,Baotou,014030,China

Center for Advanced Solidification Technology,School of Materials Science and Engineering,Shanghai University,Shanghai,200444,China

Jiangxi Key Laboratory for Rare Earth Magnetic Materials and Devices & Institute for Rare Earth Magnetic Materials and Devices(IREMMD),Jiangxi University of Science and Technology,Ganzhou,341000,China

School of Materials Science and Engineering,Nanyang Technological University,639798,Singapore

Singapore-HUJ Alliance for Research and Enterprise(SHARE),The Smart Grippers for Soft Robotics(SGSR)Programme,Campus for Research Excellence and Technological Enterprise(CREATE),138602,Singapore

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基金：

Guangdong Basic and Applied Basic Research FoundationGuangdong Basic and Applied Basic Research FoundationGuangzhou Municipal Science and Technology Project国家自然科学基金国家自然科学基金Special Project of Foshan Scientific and Technological Innovation TeamSpecial Project of Foshan Scientific and Technological Innovation TeamNational Research Foundation,Prime Minister's Office,Singapore under its Campus of Research Excellence and Technological Ent

项目编号：

2022A15150125782019A1515010970201904010030518741435206600120300320001712120001010823

出版年：

2024

DOI：

10.1016/j.jre.2023.06.010

稀土学报(英文版)

中国稀土学会

稀土学报(英文版)

CSTPCDEI

影响因子：1.3

ISSN：1002-0721

年,卷(期)：2024.42(6)

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