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Title: Synthesis and properties of La-Fe-Si/La-Co magnetocaloric composites
Authors: Wu, Yu-Cai
Zhong, Xi-Chun
Li, Yuan-Xin
Huang, Xuan
Huang, Jiao-Hong
Liu, Cui-Lan
Liu, Zhong-Wu
Qiu, Wan-Qi
Zhong, Ming-Long
Zhong, Zhen-Chen
Ramanujan, Raju V.
Keywords: Engineering::Materials
Issue Date: 2023
Source: Wu, Y., Zhong, X., Li, Y., Huang, X., Huang, J., Liu, C., Liu, Z., Qiu, W., Zhong, M., Zhong, Z. & Ramanujan, R. V. (2023). Synthesis and properties of La-Fe-Si/La-Co magnetocaloric composites. Materials Research Bulletin, 166, 112338-.
Journal: Materials Research Bulletin 
Abstract: LaFe11.8Si1.2/16wt%La65Co35 samples were prepared by spark plasma sintering (SPS) and subsequent annealing. The La65Co35 binder increased the desired 1:13 phase content in these samples during annealing at 1323 K. Interestingly, the α-Fe phase formed between the LaFe11.8Si1.2 particles and the La65Co35 binder and then disappeared as the annealing time extended. The sample annealed for 0.5 h had a distinct core-shell structure with Co in the shell, a desirable table-like (−∆SM)−T curve was obtained and its RC (153 J·kg−1) was 107% higher compared to the sample before annealing. The diffusion of Co from La3Co to the 1:13 phase was hampered by the growth of La5Si3 phase. Relatively large (−∆SM)max of 8.51 J·kg−1·K−1 (Δμ0H=2 T) and (σbc)max of 374 MPa for the sample annealed for 24 h were obtained. These results indicated that the method combining SPS and diffusion annealing is promising to prepare La-Fe-Si based magnetocaloric composites with good properties.
ISSN: 0025-5408
DOI: 10.1016/j.materresbull.2023.112338
Schools: School of Materials Science and Engineering 
Rights: © 2023 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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