Enhanced barocaloric effect produced by hydrostatic pressure-induced martensitic transformation for Ni44.6CO5.5Mn35.5In14.4 Heusler alloy

被引：31
作者：
He, Xijia [1 ,2 ]
Wei, Shengxian [1 ,2 ]
Kang, Yanru [1 ,2 ]
Zhang, Yuanlei [1 ,2 ,3 ]
Cao, Yiming [1 ,2 ]
Xu, Kun [1 ,2 ]
Li, Zhe [1 ,2 ]
Jing, Chao [3 ]
机构：
[1] Qujing Normal Univ, Ctr Magnet Mat & Devices, Qujing 655011, Peoples R China
[2] Qujing Normal Univ, Key Lab Adv Funct & Low Dimens Mat Yunnan Higher, Qujing 655011, Peoples R China
[3] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
来源：
SCRIPTA MATERIALIA | 2018年 / 145卷
基金：
中国国家自然科学基金;
关键词：
Heusler alloy; Martensitic transformation; Barocaloric effect; SHAPE-MEMORY ALLOYS; MAGNETIC ENTROPY CHANGE; ROOM-TEMPERATURE; TRANSITIONS;
D O I：
10.1016/j.scriptamat.2017.10.015
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We report effect of hydrostatic pressure on martensitic transformation in polycrystalline Ni44.6Co5.5Mn35.5In14.4 With applying pressure, the transformation moves to high temperatures at a rate of 4.4 K/kbar. Utilizing an indirect method, the calculated maximum isothermal entropy changes achieve similar to 14.3 J/kg K at 2.76 kbar and similar to 15.6 J/kg K at 5.98 kbar, which respectively output the values of similar to 5 K and similar to 6 K for the adiabatic temperature change near room temperature. After deducting the average hysteretic loss (similar to 152 J/kg), the effective refrigeration capacities still reach similar to 38 J/kg at 2.76 kbar and similar to 247 J/kg at 5.98 kbar, performing an enhanced barocaloric effect. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：58 / 61
页数：4
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