Synthesis and characterization of plasma spray formed carbon nanotube reinforced aluminum composite

Laha, Tapas; Agarwal, Arvind; Mckechnie, Timothy N.; Seal, Sudipta

doi:10.1016/j.msea.2004.04.014

Cited by 243 publications

(129 citation statements)

References 42 publications

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“…Other industrial scale processes like plasma spray, used for parts surface protection or repair, involve temperatures higher than the graphite boiling point (4900 ºC). Consequently sublimation of carbon nanotubes during the plasma spray forming 20 can occur. Alternatively, in the High Velocity Oxy-Fuel (HVOF) process, temperatures are lower than plasma spray, but in this case, CNTs are in close contact with the working gas, reacting with the containing oxygen 21 .…”

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confidence: 99%

Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique

2017

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In recent years, efforts in developing high strength-low density materials are increasing significantly. One of the promising materials to attend this demand is the carbon nanotube (CNT), to be used mainly as a reinforcing phase in lightweight metal matrix composites (MMC). In the present work, the sol-gel technique has been employed to obtain TiO 2 coating on the surface of commercial multiwall carbon nanotubes (MWCNT). The aim of such coating is to improve the thermal stability of MWCNT in oxidize environment, which is necessary in most of MMC processing routes. Calcination in inert atmosphere was performed in order to crystallize a stable coating phase. The hybrid CNT/TiO 2 nanocomposite was characterized by X-Ray Diffractometry (XRD), Raman spectroscopy, Thermogravimetry (TGA) and Field Emission Gun -Scanning Electron Microscopy (FEG-SEM). The coating structure was observed to change from anatase to rutile, as the calcination temperature increases from 500 to 1000ºC. Results from thermogravimetric analysis showed that the samples calcined at 1000 ºC were more resistant to oxidation at high temperatures.

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confidence: 99%

Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique

2017

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“…In addition, the combination of CNT with metal matrix [9][10][11][12] has recently become the main topic worth investigating. Last several decades, Cu composites have been studied and applied in a wide range of industries.…”

Section: Introductionmentioning

confidence: 99%

Electrical and mechanical properties of Cu-CNT nanocomposites sintered by microwave technique

Darabi

Rajabi

2018

Metall Mater Eng

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In this research, multiwall carbon nanotubes were dispersed in a copper matrix using a planetary ball mill. The mixed powders were compacted using a uniaxial hydraulic presser. A novel method of microwave sintering was applied to consolidate Cu-CNT nanocomposites Conventional sintering method was also used to sinter samples to investigate the effects of applied methods on the properties of the sample. Sintering time was reduced to 20 min using microwave sintering method. The morphology and phase analysis of nanocomposites were studied by FESEM and XRD. The physical and mechanical properties of Cu-CNT nanocomposites were characterized using electrical conductivity, bending strength, and micro-hardness. The results show that the mechanical properties of Cu-CNT nanocomposites are improved significantly by microwave route. The optimum hardness and bending strength were obtained for 4 vol. % CNT as an optimum amount of reinforcement.

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“…[12][13][14][15] Surfacemodification techniques such as high-energy laser beam, plasma spraying, cast sinter and electron beam irradiation have been developed over the past two decades to fabricate Surface Metal Matrix Composites (SMMCs). [16][17][18][19] It has been shown that friction-stir processing (FSP) can be effectively used to homogenise the particle distribution in Al-based in-situ composites. R. Mishra et al 12 confirmed the application of FSP technology to fabricate AA5083/SiC SMMC.…”

Section: Introductionmentioning

confidence: 99%

Friction-stir processing of a composite aluminium alloy (AA 1050) reinforced with titanium carbide powder

Sanusi¹,

Akinlabi²

2017

Mater. Tehnol.

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In this study the friction-stir processing (FSP) technique was applied for the development of surface composites of aluminium alloy (AA 1050) reinforced with titanium carbide (TiC) powder of particle size range below 60 μm compressed into the groove. Rotational speeds of 1200 min -1 and 1600 min -1 and the travel rates of (100, 200 and 300) mm/min were used for the process. This study investigates the effect of processing parameters on the wear-resistance behavior of friction-stir processed Al-TiC composites. This was achieved through microstructural characterization using optical and scanning electron (SEM) microscopes equipped with Oxford energy-dispersion spectrometry (EDS) (Tescan), microhardness profiling and wear resistance tests. From the results, it was found that the processing parameters influenced the distribution of the TiC particles. The microhardness profiling of the processed samples revealed an increase in the hardness value compared to the parent material. The wear-resistance test results confirmed the FSP technique enhanced properties in surface engineering. Keywords: aluminium alloy, friction-stir processing, microhardness, microstructure, surface composite, TiC V {tudiji je bila uporabljena tehnika me{anja s trenjem (angl. FSP) za razvoj povr{inskih kompozitov iz aluminijeve zlitine (AA 1050), oja~anih s titanovim karbidom (TiC) v prahu, z velikostjo delcev v obmo~ju pod 60 μm, stisnjenih v utor. Pri tem postopku so bile uporabljene hitrosti vrtenja 1200 min -1 in 1600 min -1 in hitrosti pomikanja (100, 200 in 300) mm/min. [tudija raziskuje vpliv procesnih parametrov na odpornost kompozitov Al-TiCi proti obrabi s trenjem. Izvedena je bila mikrostrukturna karakterizacija z uporabo svetlobnega in vrsti~nega elektronskega mikroskopa (SEM), opremljenega z Oxford energijsko disperzijsko spektrometrijo (EDS) (Tescan), profiliranja mikrotrdote in preizkusa obrabe. Iz rezultatov je bilo ugotovljeno, da so parametri obdelave vplivali na distribucijo TiC delcev. Profiliranje mikrotrdote na vzorcih je pokazalo, da je vrednost trdote pove~ana v primerjavi z osnovnim materialom. Rezultati testa odpornosti obrabe so potrdili, da FSP-tehnika izbolj{a lastnosti povr{ine.

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Synthesis and characterization of plasma spray formed carbon nanotube reinforced aluminum composite

Cited by 243 publications

References 42 publications

Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique

Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique

Electrical and mechanical properties of Cu-CNT nanocomposites sintered by microwave technique

Friction-stir processing of a composite aluminium alloy (AA 1050) reinforced with titanium carbide powder

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