Percolation of single-walled carbon nanotubes in ceramic matrix nanocomposites

Rul, Sébastien; Lefevre-Schlick, F.; Capria, Ennio; Billon, Laurent; Peigney, Alain

doi:10.1016/j.actamat.2003.10.038

Cited by 199 publications

(128 citation statements)

References 21 publications

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“…One of the first studies on synthesis of CNT/ceramic composites (published in two parts) was authored by Peigney and co-workers 39,40 [41][42][43][44][45][46][47][48] . These composite powders can then be hot pressed to form macroscopic composites.…”

Section: In-situ Growth Of Cnts By Chemical Vapour Decomposition (Cvd)mentioning

confidence: 99%

“…Due to the high temperatures and long durations involved in conventional pressureless sintering, hot-pressing (HPS) and hot-isostatic pressing (HIP) methods, degradation of the CNTs during densification of inorganic matrix has often been reported 33,41,45,48,50,73,[79][80][81][82]85 . The difficulty of entirely excluding oxygen, or indeed reactions with the matrix or associated impurities, often leads to the loss of the carbonaceous nanotubes.…”

Section: Advanced Consolidation Techniquesmentioning

confidence: 99%

“…Electrical percolation of CNTs in an electrical insulating ceramic was studied for the first time by S Rul et al 48 140 . Shielding improved with MWNT content reaching 68db for the 10 vol.% sample at 36-37GHz, indicating a possible commercial application at relevant high frequencies.…”

Section: Functional Properties Of Cnt-compositesmentioning

confidence: 99%

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Ceramic matrix composites containing carbon nanotubes

2009

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Due to the remarkable physical and mechanical properties of individual, perfect carbon nanotubes (CNTs), they are considered to be one of the most promising new reinforcements for structural composites. Their impressive electrical and thermal properties also suggest opportunities for multifunctional applications. In the context of inorganic matrix composites, researchers have particularly focussed on CNTs as toughening elements to overcome the intrinsic brittleness of the ceramic or glass material. Although there are now a number of studies published in the literature, these inorganic systems have received much less attention than CNT/polymer matrix composites. This paper reviews the current status of the research and development of CNT-loaded ceramic matrix composite materials. It includes a summary of the key issues related to the optimisation of CNT-based composites, with particular reference to brittle matrices and provides an overview of the processing techniques developed to 2 optimise dispersion quality, interfaces and density. The properties of the various composite systems are discussed, with an emphasis on toughness; a comprehensive comparative summary is provided, together with a discussion of the possible toughening mechanism that may operate. Lastly, a range of potential applications are discussed, concluding with a discussion of the scope for future developments in the field.3

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Section: In-situ Growth Of Cnts By Chemical Vapour Decomposition (Cvd)mentioning

confidence: 99%

Section: Advanced Consolidation Techniquesmentioning

confidence: 99%

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Ceramic matrix composites containing carbon nanotubes

2009

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“…These properties of CNTs endow themselves with new scientific and technological opportunities as an ideal filler material in composites. To date, various composite materials have been prepared by incorporating SWNTs or MWNTs into a metal matrix [9][10][11][12], a ceramic matrix [13][14][15][16] or a polymer matrix [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Polymers can be easily processed and fabricated into intricately shaped components without damaging CNTs during processing using conventional methods, and hence the manufacturing cost can be certainly reduced.…”

Section: Introductionmentioning

confidence: 99%

The present status and key problems of carbon nanotube based polymer composites

Du¹,

Bai²,

Cheng³

2007

Express Polym. Lett.

419

250

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Abstract. The state-of-art and key problems of carbon nanotube (CNT) based polymer composites (CNT/polymer composites) including CNT/polymer structural composites and CNT/polymer functional composites are reviewed. Based on the results reported up to now, CNTs can be an effective reinforcement for polymer matrices, and the tensile strength and elastic modulus of CNT/polymer composites can reach as high as 3600 MPa and 80 GPa, respectively. CNT/polymer composites are also promising functional composite materials with improved electrical and thermal conductivity, etc. Due to their multi-functional properties, CNT/polymer composites are expected to be used as low weight structural materials, optical devices, thermal interface materials, electric components, electromagnetic absorption materials, etc. However, the full potential of CNT/polymer composites still remains to be realized. A few key problems, such as how to prepare structurecontrollable CNTs with high purity and consistently dependable high performance, how to break up entangled or bundled CNTs and then uniformly disperse and align them within a polymer matrix, how to improve the load transfer from matrix to CNT reinforcement, etc, still exist and need to be solved in order to realize the wide applications of these advanced composites.

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“…44) Reaching the percolation threshold in ceramic matrix composite by nanotubes is also key for developing microwave absorbing materials. 45) As was shown by Chojnacki et al, 46) alumina matrix composites containing multi-walled CNTs possess attractive properties for microwave absorbers in 140 GHz frequency range when the CNT content in the composite reaches 12.5 wt.%, which is just above the percolation threshold.…”

Section: Promising Properties Of Composites Achieved By the Network Dmentioning

confidence: 99%

Network distribution of reinforcements in composites produced by sintering: microstructure formation and influence on consolidation behavior and properties

Dudina

Bokhonov

Mukherjee³

2016

J. Ceram. Soc. Japan

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Sintering of powder mixtures is one of the widely used production methods of composite materials. The distribution of the reinforcement phases in these composites is a function of both initial powder structure and sintering conditions. Based on the recent literature and experimental results obtained by the authors, this article discusses a specific type of reinforcement distribution®the network distribution®in composites produced by sintering of powder mixtures. Examples of the influence of networks of different nature on sintering of metal and ceramic matrices are presented for continuous structures composed of carbon nanotubes and quasi-continuous structures of smaller particles located at boundaries between larger particles. The principles of the microstructure formation in composites with networks formed by ceramic particles, particles of metallic glass and carbon nanotubes are analyzed. Unusual properties of composites with metal and ceramic matrices achieved by organizing reinforcements in networks are discussed.

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Percolation of single-walled carbon nanotubes in ceramic matrix nanocomposites

Cited by 199 publications

References 21 publications

Ceramic matrix composites containing carbon nanotubes

Ceramic matrix composites containing carbon nanotubes

The present status and key problems of carbon nanotube based polymer composites

Network distribution of reinforcements in composites produced by sintering: microstructure formation and influence on consolidation behavior and properties

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