Carbon Nanotube Reinforced Composites: Metal and Ceramic ...

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Figure 5.27 (a) Bulk density, (b) relative density and (c) average grain size vs sintering temperature for monolithic SiC prepared by SPS of Si, C, and B powder mixtures. Reproduced with permission from [114]. Copyright Ó (2007) Elsevier. 5.5 Carbide-Based Nanocompositesj159 forming and low processing cost [56]. Major drawbacks of PDCs are large weight loss and shrinkage of ceramics during pyrolysis. During the nanocomposite fabrication, CNTs are dispersed in liquid-phase polymer under sonication, followed by pyrolysis of dried powder mixture. Yamamoto et al. [116] prepared SiC/SWNTnanocomposites by pyrolysis PCS precursor at 1400 C in vacuum. SiC nanoparticles of 14.6–22.4 nm were deposited onto SWNTs. An et al. [56] and Katsuda et al. [117] fabricated Si-C-N/ MWNT nanocomposites by using PSZ precursor. PSZ possesses amorphous network which transforms to amorphous silicon carbonitride ceramics upon pyrolysis at 1000–1100 C [118].
160j 5 Carbon Nanotube–Ceramic Nanocomposites Figure 5.28 (a) Bulk density; (b) relative density; (c) average grain size vs carbon nanofiber content, for SiC/VGCF nanocomposites prepared by SPS of Si, C, B and VGCF powder mixtures at 1800 C. Reproduced with permission from [114]. Copyright Ó (2007) Elsevier. 5.6 Nitride-Based Nanocomposites 5.6.1 Silicon Nitride Matrix It is recognized that silicon nitride is difficult to sinter and consolidate into a dense material using conventional sintering processes. The incorporation of CNTs into silicon nitride would further impair its sinterability. Balazsi et al. fabricated the Si3N4/ 1% MWNT nanocomposite using hot isostatic pressing and SPS [43, 119, 120]. For the hipping process, ball-milled composite powder mixtures were sintered at 1700 C under a pressure of 20 MPa for 3 h, and under 2 MPa for 1 h, respectively. In the case of SPS, ball-milled composite powder mixtures were consolidated at 1500 C under 100 MPa for 3 min, and at 1650 C under 50 MPa for 3 min, respectively.
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Sie Chin Tjong Carbon Nanotube Rein
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Sie Chin Tjong Carbon Nanotube Rein
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Contents Preface IX List of Abbrevi
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5 Carbon Nanotube-Ceramic Nanocompo
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Preface Carbon nanotubes are nanost
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XII List of Abbreviations HIP hot i
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1 Introduction 1.1 Background Compo
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Figure 1.2 Transmission electron mi
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1.3 Synthesis of Carbon Nanotubes 1
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MWNTs can be as high as 70% of the
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Figure 1.7 In situ TEM images recor
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1.3 Synthesis of Carbon Nanotubesj1
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show TEM images of MWNTs synthesize
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Since then, large efforts have been
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1.3.4 Patent Processes Carbon nanot
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1.4 Purification of Carbon Nanotube
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Table 1.3 Patent processes for the
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Figure 1.13 Schematic illustration
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1.5 Mechanical Properties of Carbon
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Figure 1.14 Carbon nanotubes in hig
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Figure 1.15 In situ tensile deforma
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Table 1.7 Theoretical and experimen
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Nomenclature ~a 1 , ~a 2 Unit vecto
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carbon nanotubes. Physical Review L
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70 Jang, I., Uh, H.S., Cho, H.J., L
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108 Shelimov, K.B., Esenaliev, R.O.
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Bonnamy, S., Beguin, F., Burnham, N
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2 Carbon Nanotube-Metal Nanocomposi
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isostatic pressing. In certain case
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This implies the absence of effecti
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coating material, the plasma gun an
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Table 2.4 Changes in the size and v
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Figure 2.6 (a) Low and (b) high mag
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Figure 2.8 SEM micrographs showing
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Figure 2.11 Bright field TEM microg
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Figure 2.13 TEM image of bulk Al/5
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2.5 Magnesium-Based Nanocomposites
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limited improvement in ultimate ten
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Figure 2.18 SEM micrographs of the
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Figure 2.19 (a) Low and (b) high ma
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Figure 2.22 SEM micrographs of (a)
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Figure 2.25 (a) TEM micrograph show
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2.8 Transition Metal-Based Nanocomp
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Figure 2.27 TEM image of electrodep
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Figure 2.29 SEM micrographs of (a)
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Figure 2.31 Schematic representatio
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einforcement content SiCp/Al compos
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Materials Science Forum, 534-536 (P
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composite. Materials Science and En
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111 Cha, S.I., Kim, K.T., Arshad, S
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90j 3 Physical Properties of Carbon
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100j 3 Physical Properties of Carbo
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102j 3 Physical Properties of Carbo
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104j 4 Mechanical Characteristics o
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106j 4 Mechanical Characteristics o
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Page 185 and 186: 170j 6 Physical Properties of Carbo
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210j 7 Mechanical Properties of Car
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Table 8.1 Patent processes for maki
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218j 8 Conclusions development of c
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220j 8 Conclusions Figure 8.2 TEM m
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222j 8 Conclusions increase in Vick
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224j 8 Conclusions References 1 Cha
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226j 8 Conclusions nano-matrix. Scr
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228j Index l laser ablation 7 load
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