会议论文详细信息
13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications | |
Elastocaloric cooling using shape memory alloy films | |
物理学;能源学 | |
Ossmer, H.^1 ; Chluba, C.^2 ; Krevet, B.^1 ; Quandt, E.^2 ; Rohde, M.^3 ; Kohl, M.^1 | |
Karlsruhe Institute of Technology, IMT, PO Box 3640, 76021 Karlsruhe, Germany^1 | |
Christian Albrecht University Kiel, Institute for Material Science, 24143 Kiel, Germany^2 | |
Karlsruhe Institute of Technology, IAM, PO Box 3640, 76021 Karlsruhe, Germany^3 | |
关键词: Adiabatic conditions; BULK SPECIMENS; Maximum temperature; Rapid cooling; Surface-to-volume ratio; Tensile loading; Transfer time; Uniaxial tensile test; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/476/1/012138/pdf DOI : 10.1088/1742-6596/476/1/012138 |
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来源: IOP | |
【 摘 要 】
The elastocaloric effect in magnetron-sputtered Ni50.4Ti49.6films of 20 μm thickness is studied by means of uniaxial tensile tests and infrared thermography. For the investigated films, the usable quantity of latent heat is about 7.2 J/g. When relieving the stress after tensile loading and subsequent temperature equalization at strain rates larger than dΕ/dt 0.2 s-1, a maximum temperature change of ΔT -16 K is observed as expected for adiabatic conditions. Compared to bulk specimens, the heat transfer times are reduced to about 850 ms due to the larger surface-to-volume ratio, which is attractive for rapid cooling.
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