Effect of aluminum carbide on thermal conductivity of the unidirectional CF/Al composites fabricated by low pressure infiltration process

Lee, Moon-Hee; Choi, Yongbum; Sugio, Kenjiro; Matsugi, Kazuhiro; Sasaki, Gen

doi:10.1016/j.compscitech.2014.03.022

Cited by 89 publications

(29 citation statements)

References 22 publications

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“…The effect of carbide on the TC of aluminum/C-fibers composites has also been investigated [12], concluding that the TC is highly decreased by the carbide grown during cooling but not by that formed during infiltration.…”

Section: Introductionmentioning

confidence: 99%

Role of Al4C3 on the stability of the thermal conductivity of Al/diamond composites subjected to constant or oscillating temperature in a humid environment

2016

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Present technologies allow fabrication of aluminum/diamond particles composites with excellent thermal properties, in particular showing the by far highest Thermal Conductivity of any of the materials being evaluated for thermal management. Although there is a widespread consensus concerning the essential role that the interface plays, it is not yet fully clear how the aluminum carbide formed at the interface affects thermal properties. In particular, how it affects the stability of the thermal properties of composites subjected to thermal treatments under wetting conditions. This is precisely the objective of the present work. To this end, samples were fabricated by means of gas pressure infiltration of liquid Al into preforms of packed diamond particles. Infiltration was carried out at two temperatures and three contact times. Thermal fatigue with cooling phase in water and performance in moisture environments at temperatures close to 100°C were evaluated. The results show that those samples having low amounts of carbide at the interface (shorter contact times) are more prone to a decrease of the thermal conductivity.

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Section: Introductionmentioning

confidence: 99%

Role of Al4C3 on the stability of the thermal conductivity of Al/diamond composites subjected to constant or oscillating temperature in a humid environment

2016

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“…Currently, in the automotive and aeronautical industries, thermomechanical properties have acquired great importance due to the different components used in these systems. In this sense, composites based on graphene, carbon fiber, fiberglass, and natural fibers have explored new applications in these two areas ranging from the manufacture of parts that constitute the external or internal structure of automobiles and aircraft and the electronic application that helps to protect and, at the same time, dissipate the heat [4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Normally, this material contains 92 wt.% of carbon in each of its fibers [12]. ese fibers offer very good mechanical and physical properties [13][14][15][16], for example, high tension (2-7 GPa) by having a remarkable Young modulus (200-900 GPa), low density (1.75-2.20 g·cm −3 ), low thermal expansion, and excellent electrical conductivity and thermal conductivity (800 W m −1 ·K −1 ) [8,[17][18][19][20][21]. In addition, carbon fiber is not only four times lighter than steel but also stronger than steel [22].…”

Section: Introductionmentioning

confidence: 99%

Composite Materials Based on Henequen Fiber as a Thermal Barrier in the Automotive Sector

Olivares-Ramírez¹,

Déctor

Duarte-Möller

et al. 2019

Advances in Materials Science and Engineering

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Currently, the automotive industry has made great advances in the incorporation of materials such as carbon fiber in high-performance cars. One of the main problems of these vehicles is warming, which is generated inside due to the heat transfer produced by solar radiation falling on the car, mainly on the roof. This research proposes the preparation of a composite material containing henequen natural fiber as a thermal barrier to be used as the roof of the car. In this research, 35 different laminates of 5 layers were prepared, combining carbon fiber, henequen natural fiber, fiberglass, and additives such as resin + Al2O3 or resin + Al. Reference samples were taken from stainless steel and one reference sample was extracted from the roof of the car. Considering the solar radiation and the heat transfer mechanisms, the temperature of the surface exposed to solar radiation was determined. The thermal conductivity of the 37 samples was determined, and the experimental results showed that the thermal conductivity of the steel with which the roof of the car is manufactured was 13.43 W·m−1·K−1 and that of the proposed laminate was 5.22 W·m−1·K−1, achieving a decrease in the thermal conductivity by 61.13%. Using the temperature and thermal conductivity data, the simulation (ANSYS) of the thermal system was performed. The results showed that the temperature inside the car with the carbon steel, which is currently used to manufacture high-performance cars, would be 62.34°C, whereas that inside the car with the proposed laminate would be 44.96°C, achieving a thermal barrier that allows a temperature difference of 17.38°C.

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“…It has been known that Al 4 C 3 forms at the carbon ber/Al interface at temperatures above 773 K and it deteriorates the thermal conductivity of composites 12) . Since the extrusion temperature in the present study was set at 783 K, Al 4 C 3 may have formed in the composite.…”

Section: Carbide Formationmentioning

confidence: 99%

Fabrication of Carbon Fiber Oriented Al–Based Composites by Hot Extrusion and Evaluation of Their Thermal Conductivity

et al. 2017

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New heatsink materials having higher thermal conductivities have recently been required due to the recent rapid improvements in performance of the central processing unit, CPU, with increasing heat generation from computer devices. As an alternative material to conventional heatsink materials such as Al and Cu, composites containing carbon bers have recently been gaining much attentions because of their extremely high thermal conductivity. However, carbon ber exhibits high thermal conductivity only in its longitudinal direction. Therefore, it is essential to control the orientation of the carbon bers in the composite materials. In the present study, hot extrusion of a powder-ber mixture is applied to realization of unidirectional array of carbon bers in Al matrix, and the effects of volume fraction of the carbon bers on the thermal conductivity of the carbon ber oriented Al-based composite have been investigated. It has been demonstrated that the carbon bers are unidirectionally oriented in the extrusion direction, and the thermal conductivity in this direction increases with the increase in volume fraction of the carbon bers. For the composites with more than 30 vol% of carbon bers, the addition of Al-Si alloy powder or the application of the spark plasma sintering, SPS, before the extrusion was found to be effective for improving the sinterability of the powder-ber mixture.

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Effect of aluminum carbide on thermal conductivity of the unidirectional CF/Al composites fabricated by low pressure infiltration process

Cited by 89 publications

References 22 publications

Role of Al4C3 on the stability of the thermal conductivity of Al/diamond composites subjected to constant or oscillating temperature in a humid environment

Role of Al4C3 on the stability of the thermal conductivity of Al/diamond composites subjected to constant or oscillating temperature in a humid environment

Composite Materials Based on Henequen Fiber as a Thermal Barrier in the Automotive Sector

Fabrication of Carbon Fiber Oriented Al–Based Composites by Hot Extrusion and Evaluation of Their Thermal Conductivity

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