Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7951924 | Journal of Materials Science & Technology | 2018 | 7 Pages |
Abstract
A sub-rapidly solidified LaFe11.6Si1.4 plate was fabricated directly from liquid by centrifugal casting method. The phase constitution, microstructure and magnetocaloric effect were investigated using backscatter scanning electron microscopy, X-ray diffraction, differential scanning calorimetry and physical property measurement system. When the plate was annealed at 1373Â K, Ï1 phase was formed by a solid-state peritectoid reaction. A first-order magnetic phase transition occurred in the vicinity of 188Â K, and the effective refrigeration capacities reached 203.5Â J/kg and 209.7Â J/kg in plates annealed for 1Â h and 3Â h, respectively, under a magnetic field change of 3Â T. It is suggested that centrifugal casting may become a new approach to prepare high-performance La-Fe-Si magnetocaloric plates for practical applications, which could largely accelerate the formation of Ï1 phase during high-temperature heat-treatment process due to refined and homogeneous honeycombed microstructure.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Chemistry
Authors
Zhishuai Xu, Yuting Dai, Yue Fang, Zhiping Luo, Ke Han, Changjiang Song, Qijie Zhai, Hongxing Zheng,