Thermal percolation in a magnetic field responsive composite

被引：3
作者：
Zakinyan, Arthur R. [1 ]
Zakinyan, Anastasia A. [1 ]
Mesyatseva, Lyudmila S. [1 ,2 ]
机构：
[1] North Caucasus Fed Univ, Stavropol 355017, Russia
[2] Stavropol State Med Univ, Stavropol 355017, Russia
来源：
CHEMICAL PHYSICS LETTERS | 2023年 / 813卷
关键词：
Thermal conductivity; Percolation; Magnetic field; Magnetic fluid; Responsive composite; CONDUCTIVITY; SUSPENSIONS; VISCOSITY; TRANSPORT; FLUIDS;
D O I：
10.1016/j.cplett.2023.140319
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effect of thermal percolation in a magnetic fluid composite was found when changing the content of con-ducting microparticles in a low-conducting medium. It is shown that the effect of the magnetic field on the thermal conductivity of the composite material is significant at the concentration of conducting microparticles above the percolation threshold and much less pronounced otherwise. The relative increase in thermal con-ductivity can exceed 600% under the influence of a magnetic field parallel to the heat flux and is achieved in fields of intensity <10 kA/m at a volume concentration of conducting microparticles of 0.25.
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页数：6
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