Processing and properties of carbon nanotubes reinforced aluminum composites

Deng, Chenlong; Wang, D.Z.; Zhang, X.X.; Li, A.B.

doi:10.1016/j.msea.2006.08.057

Cited by 368 publications

(159 citation statements)

References 37 publications

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“…49 As such, degradation of strength with MoTe 2 content is to be expected given the platelet aggregation observed in Fig 1E. The strain at break also decreases relatively uniformly with increased levels of MoTe 2 . This behaviour has been observed for several other MMCs 9,24,25,28,30,32,34 and indeed polymer nano-composite materials 7,13,48,[50][51][52][53][54][55] .…”

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confidence: 70%

“…Previous studies have observed strength increases at relatively low loading level followed by a falloff at higher filler content for MMCs filled with both carbon nanotubes 25,26,32 and graphene 24 . A strength decrease, often at higher loading levels is commonly observed for nanomaterial-filled polymer composites.…”

mentioning

confidence: 90%

“…Of nanomaterial-reinforced MMCs, much attention has been devoted to using carbon nanotubes (CNTs) to reinforce metals. [23][24][25][26][27][28][29][30][31][32][33][34][35][36] Additionally, Boron Nitride nanotubes have been used to reinforce aluminium. 37 Only recently have reports surfaced where two dimensional filler materials have been utilised in MMCs.…”

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Reinforcement of metal with liquid-exfoliated inorganic nano-platelets

May

Khan

Coleman

2013

Applied Physics Letters

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We have prepared metal matrix composites (MMCs) of a pewter alloy filled with liquid-exfoliated Molybdenum Telluride (MoTe 2 ) nano-platelets. The combination of MoTe 2 and pewter was chosen due to their near-identical densities, thus reducing the scope for buoyancy-induced separation during melt mixing. The addition of nanofiller results in a doubling of the Young's modulus, Y, for a volume fraction, V f , of <1 % MoTe 2 , corresponding to a reinforcement of dY/dV f =110 GPa. We find that this degree of reinforcement to be reasonably consistent with that predicted by a simplified version of Halpin-Tsai theory.Over the last decade, the study of 2-dimensional (2D) nano-materials has become one of the most active areas of nanoscience. Since the discovery of graphene 1 and more recently, the surge of interest in inorganic 2D materials, 2-4 such nanostructures have been used to demonstrate a host of applications in areas from composites to energy storage to optoelectronics. 2-5 Particularly important will be applications which harness the impressive mechanical properties of 2D nano-materials. It is well known that graphene is the strongest, stiffest material known to man with strength and elastic modulus values of 130 and 1000 GPa respectively. 6 Indeed graphene nanosheets have been used in a number of mechanical applications particularly as a reinforcing filler in composites. 7-9 Less well known is the fact that boron nitride (BN) nanosheets display very similar mechanical properties to graphene. 10 Indeed a host of 2D nano-materials have Young's moduli which surpass 100 GPa. 11 Perhaps more importantly these materials may have strengths 11 as high as 36 GPa (estimated for layered WO 2 assuming its strength,  B , and modulus, Y, scale in a manner similar to MoS 2 : Y=11.7 B ) 12 . However, to the author's knowledge only three papers describe using inorganic 2D materials to mechanically reinforce any matrices; in all cases reinforcement of polymer matrices with BN nanosheets. [13][14][15] In many ways this is surprising. It was recently shown that a range of layered compounds can be exfoliated by sonication in liquids to give large quantities of 2D nanosheets. [16][17][18][19] The advantage of such liquid processing is that the resultant suspensions can be used to make a range of materials and structures including composites. 3 Because of the exceptional mechanical properties of 2D materials, 11 we would expect such composites to display enhanced mechanical properties.The vast majority of reports on nano-composites describe using nano-materials to reinforce polymer matrices. 8 Yet, many other types of composites exist; including for

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Reinforcement of metal with liquid-exfoliated inorganic nano-platelets

May

Khan

Coleman

2013

Applied Physics Letters

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“…Maintaining a homogeneous distribution of CNTs in the matrix, loss of CNTs during processing, interfacial reactions and bonding with the matrix are some of the critical issues which have been the main concerns among scientists in the fabrication of CNTs metal-matrix nanocomposites [7,8]. To overcome these challenges, different fabrication processes such as thermal spraying [9], hot pressing [10], hot extrusion [11] and spark plasma sintering (SPS) [12] have been proposed by researchers.…”

Section: Introductionmentioning

confidence: 99%

“…Several factors were reported as the cause of the loss in the overall thermal conductivity of the composites such as interface thermal resistance, porosities, inhomogeneous distribution and incomplete consolidation [10][11][12][13][14]. As it has been mentioned in the literature, the thermal conductivity of composites materials are highly influenced by the distribution factor.…”

Section: Introductionmentioning

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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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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