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Enhanced barocaloric effect produced by hydrostatic pressure-induced martensitic transformation for Ni44.6Co5.5Mn35.5In14.4 Heusler alloy.
- Source :
-
Scripta Materialia . Mar2018, Vol. 145, p58-61. 4p. - Publication Year :
- 2018
-
Abstract
- We report effect of hydrostatic pressure on martensitic transformation in polycrystalline Ni 44.6 Co 5.5 Mn 35.5 In 14.4 . 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 ~ 14.3 J/kg K at 2.76 kbar and ~ 15.6 J/kg K at 5.98 kbar, which respectively output the values of ~ 5 K and ~ 6 K for the adiabatic temperature change near room temperature. After deducting the average hysteretic loss (~ 152 J/kg), the effective refrigeration capacities still reach ~ 38 J/kg at 2.76 kbar and ~ 247 J/kg at 5.98 kbar, performing an enhanced barocaloric effect. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13596462
- Volume :
- 145
- Database :
- Academic Search Index
- Journal :
- Scripta Materialia
- Publication Type :
- Academic Journal
- Accession number :
- 126230933
- Full Text :
- https://doi.org/10.1016/j.scriptamat.2017.10.015