Carbon Nanotube Reinforced Composites: Metal and Ceramic ...

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Figure 2.8 SEM micrographs showing particle morphology and size change with mechanically alloying time for Al/2 wt% MWNT and Al/5 wt% MWNT powder composites. Reproduced with permission from [37]. Copyright Ó (2007) Springer Verlag. 2.4 Aluminum-Based Nanocompositesj55 Al/2 wt% MWNT sample can cause serious problems during subsequent sintering or hot pressing. In this case, PCA agent (methanol) is needed to control the size of particles during milling.
56j 2 Carbon Nanotube–Metal Nanocomposites Figure 2.9 CNTs dispersed on the surface of aluminum particles of Al/2 wt% MWNT composite powder after milling for 0.5 h. Reproduced with permission from [36]. Copyright Ó (2007) Elsevier. To observe the dispersion of MWNTs in Al matrix, the mill powders were fractured mechanically. Figures 2.9 and 2.10 show SEM fractographs of the Al/2 wt% MWNT sample after milling for 0.5 and 48 h, respectively. The MWNTs are found to disperse uniformly on the flakes surface after milling for 0.5 h. Carbon nanotubes also remain intact with the aluminum matrix after milling for 48 h. From a series of SEM fractographs examination, MWCNTs are embedded in the aluminum matrix once cold-welding particles of smooth surfaces begin to develop, that is, after milling for 6 h. More recently, Perez-Bustamante et al. employed MA technique to prepare Al nanocomposites reinforced with 0.25, 0.5, 0.75 and 2 wt% MWNT [38]. Aluminum powders were blended ultrasonically with MWNTs, mechanically milled in a high energy shaker mill for 1–2 h, followed by sintering in vacuum at 550 C for 3 h. The milling media (hardened steel) to powder ratio was fixed at 5 : 1. Figure 2.11 is the TEM micrograph of as-sintered Al/2 wt% MWNT nanocomposite showing good dispersion of CNTs in aluminum matrix. Figure 2.10 Individual CNTs embedded in the aluminum particles of Al/2 wt% MWNT composite powder after milling for 48 h. Reproduced with permission from [36]. Copyright Ó (2007) Elsevier.
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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
Page 20 and 21: 1.3 Synthesis of Carbon Nanotubes 1
Page 22 and 23: MWNTs can be as high as 70% of the
Page 24 and 25: Figure 1.7 In situ TEM images recor
Page 26 and 27: 1.3 Synthesis of Carbon Nanotubesj1
Page 28 and 29: show TEM images of MWNTs synthesize
Page 30 and 31: Since then, large efforts have been
Page 32 and 33: 1.3.4 Patent Processes Carbon nanot
Page 34 and 35: 1.4 Purification of Carbon Nanotube
Page 36 and 37: Table 1.3 Patent processes for the
Page 38 and 39: Figure 1.13 Schematic illustration
Page 40 and 41: 1.5 Mechanical Properties of Carbon
Page 42 and 43: Figure 1.14 Carbon nanotubes in hig
Page 44 and 45: Figure 1.15 In situ tensile deforma
Page 46 and 47: Table 1.7 Theoretical and experimen
Page 48 and 49: Nomenclature ~a 1 , ~a 2 Unit vecto
Page 50 and 51: carbon nanotubes. Physical Review L
Page 52 and 53: 70 Jang, I., Uh, H.S., Cho, H.J., L
Page 54 and 55: 108 Shelimov, K.B., Esenaliev, R.O.
Page 56 and 57: Bonnamy, S., Beguin, F., Burnham, N
Page 58 and 59: 2 Carbon Nanotube-Metal Nanocomposi
Page 60 and 61: isostatic pressing. In certain case
Page 62 and 63: This implies the absence of effecti
Page 64 and 65: coating material, the plasma gun an
Page 66 and 67: Table 2.4 Changes in the size and v
Page 68 and 69: Figure 2.6 (a) Low and (b) high mag
Page 72 and 73: Figure 2.11 Bright field TEM microg
Page 74 and 75: Figure 2.13 TEM image of bulk Al/5
Page 76 and 77: 2.5 Magnesium-Based Nanocomposites
Page 78 and 79: limited improvement in ultimate ten
Page 80 and 81: Figure 2.18 SEM micrographs of the
Page 82 and 83: Figure 2.19 (a) Low and (b) high ma
Page 84 and 85: Figure 2.22 SEM micrographs of (a)
Page 86 and 87: Figure 2.25 (a) TEM micrograph show
Page 88 and 89: 2.8 Transition Metal-Based Nanocomp
Page 90 and 91: Figure 2.27 TEM image of electrodep
Page 92 and 93: Figure 2.29 SEM micrographs of (a)
Page 94 and 95: Figure 2.31 Schematic representatio
Page 96 and 97: einforcement content SiCp/Al compos
Page 98 and 99: Materials Science Forum, 534-536 (P
Page 100 and 101: composite. Materials Science and En
Page 102: 111 Cha, S.I., Kim, K.T., Arshad, S
Page 105 and 106: 90j 3 Physical Properties of Carbon
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132j 5 Carbon Nanotube-Ceramic Nano
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170j 6 Physical Properties of Carbo
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186j 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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