Large elastocaloric effect in a Ni-Co-Mn-Sn magnetic shape memory alloy

被引：64
作者：
Yang, Z. [1 ]
Cong, D. Y. [1 ]
Huang, L. [2 ]
Nie, Z. H. [2 ]
Sun, X. M. [1 ]
Zhang, Q. H. [2 ]
Wang, Y. D. [1 ]
机构：
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, 30 Xueyuan Rd, Beijing 100083, Peoples R China
[2] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
来源：
MATERIALS & DESIGN | 2016年 / 92卷
基金：
中国国家自然科学基金;
关键词：
Elastocaloric effect; Magnetic shape memory alloy; Martensitic transformation; Entropy change; Ni-Co-Mn-Sn alloy; PHASE-TRANSFORMATION;
D O I：
10.1016/j.matdes.2015.12.118
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Exploration of high-performance elastocaloric materials is of great significance to the development of environmentally friendly mechanocaloric cooling technology that could potentially substitute the conventional cooling technology based on vapor compression. In the present work, the elastocaloric effect of a polycrystalline Ni43.5Co6.5Mn39Sn11 magnetic shape alloy was investigated mainly by mechanical testing. A large stress induced entropy change of similar to 11.1 J kg(-1) degrees C-1 under 310 MPa was achieved, which corresponds to more than 80% of the maximum attainable value, i.e. the transformation entropy change. Incorporating the advantages of low cost, non-toxicity, easy fabrication, and abundance in constituent elements, this alloy shows promising prospects for solid-state elastocaloric refrigeration applications. This study also provides instructive information for the design of high-performance elastocaloric materials. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：932 / 936
页数：5
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