Experimental Study of Thermal Properties of Aluminum Matrix Composites Inserted Multiwalled Carbon Nanotubes for Heat Sink Applications

Abstract

The heat sink is an important component in laptop computers as it dissipates the heat generated by the system. The efficiency, cost and overall size of the system can be affected by the heat sink device. Four selection criteria; thermal conductivity, coefficient of thermal expansion, density and minimal cost to choose a laptop computer cooling material The ideal heat sink material exhibits high thermal conductivity, low coefficient of thermal expansion, low density and low cost. In this study, we investigated the thermal properties of aluminum matrix composites reinforced with 0-10 wt% copper-coated Multiwalled carbon nanotubes (MWNTs) produced by liquid state processing. Composites with the addition of <10 wt.% MWNTs have higher thermal conductivity than pure aluminum produced by the same liquid state processing. The MWNTs/Al composite exhibited a maximum thermal conductivity of 199 W/m/K at 5 wt.% MWNTs. The increase in thermal conductivity is supported by the measured micro hardness. The MWNTs/Al composites exhibited a maximum microhardness of 90 HV also at 5 wt.% MWNTs. The contribution of carbon nanotubes to the thermal conductivity of the composite was demonstrated by theoretical analysis. The results showed that MWNT-reinforced aluminum matrix composite is a potential material for high thermal conductivity applications, such as heat sink applications.

Country : Indonesia

1 I Dewa Made Pancarana2 I Nyoman Budiartana

  1. Mechanical Engineering Department, Bali State Polytechnic, Bali, Indonesia.
  2. Mechanical Engineering Department, Bali State Polytechnic, Bali, Indonesia.

IRJIET, Volume 6, Issue 9, September 2022 pp. 100-108

doi.org/10.47001/IRJIET/2022.609016

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