In:
Journal of Applied Physics, AIP Publishing, Vol. 111, No. 9 ( 2012-05-01)
Abstract:
In this study, we attempted to improve the thermal rectification ratio (TRR = (JAB – JBA)/JBA) of a thermal rectifier consisting of two Al-based alloys, Al72.6Re17.4Si10 and Al71.6Mn17.4Si11, both of which are known to be the 1/1-cubic approximant of icosahedral quasicrystal. In order to estimate the thermal rectification ratio obtainable for a thermal rectifier made from two given materials, we employed a simple method of TRR calculation using the classical Fourier-law of heat conduction. The largest TRR, which exceeded 0.12 for the thermal reservoirs kept at TH = 500 K and TL = 300 K, was experimentally obtained, coinciding with what the calculations predicted. By using the experimentally determined thermal conductivity and the calculation method employed in this study, we show the potential of an Al62Cu25.5Fe12.5 icosahedral quasicrystal as one of the constituent materials of thermal rectifier possessing a TRR magnitude in excess of unity.
Type of Medium:
Online Resource
ISSN:
0021-8979
,
1089-7550
Language:
English
Publisher:
AIP Publishing
Publication Date:
2012
detail.hit.zdb_id:
220641-9
detail.hit.zdb_id:
3112-4
detail.hit.zdb_id:
1476463-5
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