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

被引：32

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

页码：58 / 61

页数：4

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