Synthesis of carbon coated β-SiC nanofibers by microwave plasma assisted chemical vapour deposition in CH4/H2 gas mixture

Rizk, S.; Assouar, Badreddine; Gatel, Christophe; Belmahi, M.; Lambert, Jacques; Bougdira, J.

doi:10.1016/j.diamond.2008.01.108

Cited by 5 publications

(4 citation statements)

References 25 publications

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“…In detail, when the temperature is increased to more than 800°C17, the Al atoms evaporate from the Al sheet and integrate as droplets in a low-temperature zone. At the same time, when the temperature is greater than 1000°C active carbon atoms form in the atmosphere due to CH 4 cracking18. In this case, there are various atomic radicals, including Al, AlO x , C, Al 4 O 4 C and perhaps other Al-C-O-based clusters, are present in the atmosphere.…”

Section: Resultsmentioning

confidence: 99%

One-Dimensional Al4O4C Ceramics: A New Type of Blue Light Emitter

Sun

Chen

Ding

et al. 2013

Sci Rep

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Ceramic Al4O4C, which has few active functions, has been used as an additive in carbon-containing refractory materials to improve their oxidation resistance and thermal properties. Herein, the crystal and electronic structures of this novel material were systematically investigated for opto-electrical applications, which revealed interesting fluorescence features via photoluminescence (PL) and cathode luminescence (CL). When a 325 nm laser was focused on one end of a single Al4O4C needle, the entire needle was illuminated by the blue emission, which implies that this material exhibits excellent waveguide properties. Interestingly, the thin end exhibited the highest light intensity even though the excited region was located at the thick end. We believe the reason for this observed behaviour is related to the excellent waveguide behaviour as well as to the needle shape, which induces this intriguing blue-light convergence effect. Ab initio calculations demonstrated that the emission light emanates from the interband transition.

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Section: Resultsmentioning

confidence: 99%

One-Dimensional Al4O4C Ceramics: A New Type of Blue Light Emitter

Sun

Chen

Ding

et al. 2013

Sci Rep

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“…The gas mixture composition was ensured by mass flowmeters computer controlled in order to maintain both the CH 4 /H 2 ratio and the total pressure at constant values. The substrates used in this study were Si (100) covered by a Fe catalyst thin film that researchers [5] had deposited by a high vacuum thermal deposition system. The thickness of the Fe thin film was about 10 nm.…”

Section: Carbidesmentioning

confidence: 99%

“…It is also used in the form of tubes, boats and crucibles to handle molten metals and as part of electronic devices used for thermoionic transducers [4] . Silicon carbide (SiC) is an important semiconductor which can be operated at high powers, high temperatures, and high frequencies [5] . Due to its exceptional hardness and superior wear resistance, tungsten carbide (WC) has a wide range of industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Plasma-Chemical Synthesis of Nanosized Powders-Nitrides, Carbides, Oxides, Carbon Nanotubes and Fullerenes

Zaharieva¹,

Vissokov²,

Grabis³

et al. 2012

Plasma Sci. Technol.

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“…The difference between these two techniques is that the first is able to independently control the plasma density as well as the degree of dissociation, while the second controls the surface chemistry and the growth mechanisms. In this study, we have developed an MPACVD system using a continuous microwave source at 2.45 GHz and have obtained interesting results for diamond growth, especially by studying the role of atomic hydrogen in such a process [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

The use of microwave plasma-assisted CVD on nanostructured iron catalysts to grow isolated bundles of carbon nanotubes

et al. 2010

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Catalysts play a key role in the growth of carbon nanotubes. The microwave plasma-assisted chemical vapor deposition (MPACVD) method is now commonly used for directional and conformal growth of carbon nanotubes (CNTs) on substrates. In this work, we report on the effect of H(2) plasma pre-treatment on the diameter and density of iron catalyst nanoparticles for different iron layer thicknesses in order to grow isolated bundles of CNTs. Atomic force microscopy shows first that as plasma power density increases, iron nanoparticle diameters decrease, which is due to the increasing of gas dissociation giving more ion bombardment energy, and second that the diameter of nanoparticles decreases with the catalyst thickness. The growth of CNT was carried out under different CH(4) concentrations for different iron film thicknesses. Transmission electron microscopy and Raman spectroscopy show that the synthesized CNT were of good quality and had an outer diameter between 5 and 10 nm.

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Synthesis of carbon coated β-SiC nanofibers by microwave plasma assisted chemical vapour deposition in CH4/H2 gas mixture

Cited by 5 publications

References 25 publications

One-Dimensional Al4O4C Ceramics: A New Type of Blue Light Emitter

One-Dimensional Al4O4C Ceramics: A New Type of Blue Light Emitter

Plasma-Chemical Synthesis of Nanosized Powders-Nitrides, Carbides, Oxides, Carbon Nanotubes and Fullerenes

The use of microwave plasma-assisted CVD on nanostructured iron catalysts to grow isolated bundles of carbon nanotubes

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