Fabrication and effective thermal conductivity of multi-walled carbon nanotubes reinforced Cu matrix composites for heat sink applications

Chu, Ke; Wu, Qingying; Jia, Chengchang; Liang, Xuan; Nie, Junhui; Tian, Wenjie; Gai, Guo Sheng; Guo, Hong

doi:10.1016/j.compscitech.2009.10.021

Cited by 229 publications

(97 citation statements)

References 29 publications

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“…These data also platted in Fig. 2 with comparison to Rule of Mixture and previous work by Chu et al [15]. It is shown in Fig.…”

Section: Resultsmentioning

confidence: 82%

“…It is clearly seen that our predicted values without considering the effects of interface thermal resistance and agglomeration of CNTs yielded higher values of K than that of the experimental data. However, it could be deduced that the underperformance of the experimental values can be related to the unfavourable factors such as interfacial resistance between the Cu matrix and CNT reinforcement, porosity and inhomogeneous distribution of CNTs [15]. …”

Section: Resultsmentioning

confidence: 99%

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A Numerical Analysis for Predicting the Thermal Conductivity of Carbon Nanotube Reinforced Copper-Matrix Nanocomposites

Afrooz

Yusoff

Ahmad

et al. 2014

MATEC Web of Conferences

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Abstract. Thermal conductivity of carbon nanotubes (CNTs) copper-matrix nanocomposites was predicted by using numerical approach. In the present study, twenty representative volume elements (RVEs) were modeled by assuming that the CNTs are distributed homogeneously in the copper (Cu) matrix. It is assumed that each RVE contains different pattern of CNTs distribution while the direction, diameter and length of CNTs are held constant. The effect of the CNTs-matrix interfacial resistance was also negligible. Therefore, it was observed that the predicted values of thermal conductivity would reach to the upper-bound rule of mixtures.

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“…These data also platted in Fig. 2 with comparison to Rule of Mixture and previous work by Chu et al [15]. It is shown in Fig.…”

Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 99%

A Numerical Analysis for Predicting the Thermal Conductivity of Carbon Nanotube Reinforced Copper-Matrix Nanocomposites

Afrooz

Yusoff

Ahmad

et al. 2014

MATEC Web of Conferences

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“…Reddy et al [16] developed a new method for the synthesis of Cu 2 O-coated multiwall carbon nanotubes (MWCNTs) on the basis of Fehling's reaction. Fabrication of MWCNT-reinforced Cu matrix composite for heat sink application was reported [18]. But only a few reports have been made on simple and efficient routes for strongly attaching noble metal nanoparticles or nanospheres to CNTs [19,20].…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence from SWCNT/Cu Hybrid Nanostructure Synthesized by a Soft Chemical Route

Paul

Mitra

2012

ISRN Optics

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We report a simple wet chemical technique to coat single wall carbon nanotubes (SWCNTs) with Cu nanoparticles. The SWCNT/Cu hybrid nanostructure has been characterized using field emission scanning electron microscopy (FESEM), highresolution transmission electron microscopy (HRTEM), energy dispersive X-ray analysis (EDAX), X-ray diffraction (XRD) study, and Raman spectroscopy. Characteristic optical properties of the nanohybrid structure have been identified through UV-Vis and photoluminescence (PL) spectroscopy. When excited by a radiation of 400 nm wavelength, PL emission in the visible range of 480-620 nm was observed due to charge transfer. This property may be exploited in photovoltaic cells, solar energy conversion, and sensor devices.

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“…These CNT clusters will bring to an enhancement of porosity and a reduction of properties of composites. Several methods have been proposed to restrict the effect of these CNT clusters such as hot extrusion [7], hot isostatic pressing [9], spark plasma sintering [10,12] or severe plastic deformation [13,14] and the results have shown the improvement of density and properties of composites. Recently, ultrasonic have been used to obtain better dispersion of a range of nanomaterials including CNTs [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF ULTRASONIC-ASSISTED COMPACTION ON DENSITY AND HARDNESS OF Cu-CNT NANOCOMPOSITES SINTERED BY CAPSULE-FREE HOT ISOSTATIC PRESSING

Trung¹,

Phuong²,

Luan³

et al. 2017

Acta Metall Slovaca

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Cu-CNTs composites were prepared with and without ultrasonic-assisted compaction in this work. The samples were sintered by capsule-free hot isostatic pressing at 920 o C and 50 MPa Ar gases. The results showed that the higher relative density and Brinell hardness were obtained for ultrasonic assisted compaction samples (at the same CNT content). For both cases, the highest hardness values was achieved at 0.5 wt.% CNT (49.2 HB and 45.8 HB for specimens with and without the ultrasonic-assisted compaction, respectively). The hardness was then decreased as the CNT content increased. The higher hardness values were resulted from higher densification of the sintered samples with ultrasonic-assisted compaction compared to the others.Keywords: Cu-CNT composites, carbon nanotubes, ultrasonic, compaction, hot isostatic pressing 1 Introduction Due to the unique properties of carbon nanotubes (CNT) such as high strength, good thermal conductivity and electrical properties, it's considered to be an ideal reinforcement for metal matrix composites [1][2][3]. An increasing of researches concerning with CNTs reinforced metal matrix composites (CNT-MMC) has been carried out in recent years. There are several techniques to fabricate CNT-MMC including powder metallurgy, electrodeposition, electroplating, melting and spray coating methods [3][4][5][6][7][8][9]. In which, powder route is the most popular method being used. The basic steps of the method include mixing CNT with metal powder (Al, Cu, Ni, etc.) via a mechanical alloying, and following by compaction and sintering. Up to date, the challenge is how to induce a uniform dispersion of CNT in metal matrix, especially, for high CNT amount. The strong van der Waal's force of attraction among CNT, the density discrepancy between CNT and metal matrix, the tendency to agglomeration and tangle together of CNT are attributed to the poor dispersion of CNT in the metal matrix. Besides that the weak interface bonding between CNT and metal matrices due to the poor wettability characteristic of CNT with metal matrices also restrict the incorporation of CNT with metal matrix. And so, these cause the reduction in their expected properties of the composites. Several methods have been proposed to improve the homogeneity

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Fabrication and effective thermal conductivity of multi-walled carbon nanotubes reinforced Cu matrix composites for heat sink applications

Cited by 229 publications

References 29 publications

A Numerical Analysis for Predicting the Thermal Conductivity of Carbon Nanotube Reinforced Copper-Matrix Nanocomposites

A Numerical Analysis for Predicting the Thermal Conductivity of Carbon Nanotube Reinforced Copper-Matrix Nanocomposites

Photoluminescence from SWCNT/Cu Hybrid Nanostructure Synthesized by a Soft Chemical Route

EFFECT OF ULTRASONIC-ASSISTED COMPACTION ON DENSITY AND HARDNESS OF Cu-CNT NANOCOMPOSITES SINTERED BY CAPSULE-FREE HOT ISOSTATIC PRESSING

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