Preparation of silicon carbide SiC-based nanopowders by the aerosol-assisted synthesis and the DC thermal plasma synthesis methods

Czosnek, Cezary; Bućko, Mirosław M.; Janik, Jerzy F.; Olejniczak, Zbigniew; Bystrzejewski, M.; Łabędź, Olga; Huczko, A.

doi:10.1016/j.materresbull.2014.12.003

Cited by 27 publications

(7 citation statements)

References 52 publications

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“…Synthesis. Two organosilicon molecular compounds, methyltrimethoxysilane (MTMS) CH 3 Si(OCH 3 ) 3 (Aldrich, St. Louis, MS, USA) and methyltriethoxylsilane (MTES) CH 3 Si(OC 2 H 5 ) 3 (Aldrich, St. Louis, MS, USA) were used as starting materials in spray synthesis, and details of the method were described previously [ 16 , 17 , 18 , 19 ]. The experimental set-up was composed of a pneumatic spray generator with the output connected to a ceramic tube reactor and an exhaust nylon filter attached to the reactor’s exit, as shown in Figure 1 .…”

Section: Methodsmentioning

confidence: 99%

“…This method has already been used in our group to prepare pure and composite nanopowders of silicon oxycarbide glasses (SiO x C y ) from selected oxygen-containing organosilicon precursors in a single stage process under Ar [ 16 ]. By applying an additional pyrolysis in the second stage, nanometer-sized SiC or C/SiC composite powders could be prepared depending on the type of precursor [ 17 , 18 , 19 , 20 ]. In general, such an approach dwells on the complex thermal decomposition changes of a precursor under a neutral gas atmosphere and probable inter-reactions of evolving by-products.…”

Section: Introductionmentioning

confidence: 99%

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Amorphous Silicon Oxynitride-Based Powders Produced by Spray Pyrolysis from Liquid Organosilicon Compounds

et al. 2021

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Silicon oxynitrides (SiOxNy) have many advantageous properties for modern ceramic applications that justify a development of their new and efficient preparation methods. In the paper, we show the possibility of preparing amorphous SiOxNy-based materials from selected liquid organosilicon compounds, methyltrimethoxysilane CH3Si(OCH3)3 and methyltriethoxysilane CH3Si(OC2H5)3, by a convenient spray pyrolysis method. The precursor mist is transported with an inert gas or a mixture of reactive gases through a preheated tube reactor to undergo complex decomposition changes, and the resulting powders are collected in the exhaust filter. The powders are produced in the tube at temperatures of 1200, 1400, and 1600 °C under various gas atmosphere conditions. In the first option, argon Ar gas is used for mist transportation and ammonia NH3 gas serves as a reactive medium, while in the second option nitrogen N2 is exclusively applied. Powder X-Ray Diffraction (XRD) results confirm the highly amorphous nature of all products except those made at 1600 °C in nitrogen. SEM examination shows the spheroidal particle morphology of powders, which is typical for this method. Fourier Transform Infrared (FT-IR) spectroscopy reveals the presence of Si–N and Si–O bonds in the powders prepared under Ar/NH3, whereas those produced under N2 additionally contain Si–C bonds. Raman spectroscopy measurements also support some turbostratic free carbon C in the products prepared under nitrogen. The directly determined O- and N-contents provide additional data linking the process conditions with specific powder composition, especially from the point of view of oxygen replacement in the Si–O moieties formed upon initial precursor decomposition reactions by nitrogen (from NH3 or N2) or carbon (from the carbonization of the organic groups).

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Amorphous Silicon Oxynitride-Based Powders Produced by Spray Pyrolysis from Liquid Organosilicon Compounds

et al. 2021

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“…In this case, the core of such parts in order to ensure high structural strength requires much lower hardness but higher indicators of plasticity and viscosity. Thus, in the parts that work under conditions of friction, different properties of the surface and the core should be provided, which can be achieved by different types of treatment [10] or by applying composite coatings [11].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improvement of energy efficiency in the operation of a thermal reactor with submerged combustion apparatus through the cyclic input of energy

Belozerov

Mahatilova

Sоbоl

et al. 2017

EEJET

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“…Several mechanisms for the growth of one dimensional nanostructure have been proposed such as vapor-liquid-solid (VLS) 44 , vapor-solid (VS) 45 and solid-liquid-solid (SLS) 46 mechanisms. In this study, mechanism of vapor-solid (VS) was suggested to explain the synthesis of SiCNTs from the blend of SiO 2 and MWCNTs at 1400 °C with heating rate of 30 °C/min and maintained for 40 minute.…”

Section: Growth Mechanism Of Silicon Carbide Nanotubes (Sicnts)mentioning

confidence: 99%

Effective Synthesis of Silicon Carbide Nanotubes by Microwave Heating of Blended Silicon Dioxide and Multi-Walled Carbon Nanotube

et al. 2017

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Silicon carbide nanotube (SiCNTs) has been proven as a suitable material for wide applications in high power, elevated temperature and harsh environment. For the first time, we reported in this article an effective synthesis of SiCNTs by microwave heating of SiO 2 and MWCNTs in molar ratio of 1:1, 1:3, 1:5 and 1:7. Blend of SiO 2 and MWCNTs in the molar ratio of 1:3 was proven to be the most suitable for the high yield synthesis of β-SiCNTs as confirmed by X-ray diffraction pattern. Only SiCNTs were observed from the blend of MWCNTs and SiO 2 in the molar ratio of 1:3 from field emission scanning electron microscopy imaging. High magnification transmission electron microscopy showed that tubular structure of MWCNT was preserved with the inter-planar spacing of 0.25 nm. Absorption bands of Si-C bond were detected at 803 cm -1 in Fourier transform infrared spectrum. Thermal gravimetric analysis revealed that SiCNTs from ratio of 1:3 showed the lowest weight loss. Thus, our synthetic process indicates high yield conversion of SiO 2 and MWCNTs to SiCNTs was achieved for blend of SiO 2 and MWCNTs in molar ratio of 1:3.

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Preparation of silicon carbide SiC-based nanopowders by the aerosol-assisted synthesis and the DC thermal plasma synthesis methods

Cited by 27 publications

References 52 publications

Amorphous Silicon Oxynitride-Based Powders Produced by Spray Pyrolysis from Liquid Organosilicon Compounds

Amorphous Silicon Oxynitride-Based Powders Produced by Spray Pyrolysis from Liquid Organosilicon Compounds

Improvement of energy efficiency in the operation of a thermal reactor with submerged combustion apparatus through the cyclic input of energy

Effective Synthesis of Silicon Carbide Nanotubes by Microwave Heating of Blended Silicon Dioxide and Multi-Walled Carbon Nanotube

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