Journal
ACTA MATERIALIA
Volume 125, Issue -, Pages 506-512Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2016.12.014
Keywords
La-Fe-Si-H; Magnetocaloric effect; Adiabatic temperature change; Thermal conductivity
Funding
- National Natural Science Foundation of China [51371184, 51531008]
- Zhejiang Provincial Natural Science Foundation of China [LR14E010001, LY16E010002, 2013TD08]
- Increase Competitiveness Program of NUST MISiS [K4-2015-013]
- DFG [SPP 1599]
Ask authors/readers for more resources
La(Fe,Si)(13)H-based materials are considered to be one of the most promising room-temperature magnetic refrigerants. The intrinsic brittleness and relatively low thermal conductivity in La-Fe-Si-H alloys, however, have severely hindered its preparation, shaping and application. To solve this long-standing problem, in this work we propose a novel approach to fabricate stable La-Fe-Si-H blocks and plates by adding extra alpha-Fe as a reinforcing phase to enhance mechanical integrity. Much better bending strength compared to that in the stoichiometric composition has been observed in our dual phase La-Fe-Si-H magnetic refrigerants. Such novel Fe-rich plates can be exposed to 10(5) magnetic field cycles without losing mechanical integrity. In addition, a large and reproducible Delta T-ad of 5.4 K in 1.93 T and a thermal conductivity of 6 W/mK at room temperature have been obtained. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available