| DOI | Resolve DOI: https://doi.org/10.1007/BF02402962 |
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| Author | Search for: Allaire, F.1; Search for: Parent, L.1; Search for: Dallaire, S.1 |
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| Affiliation | - National Research Council of Canada
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| Format | Text, Article |
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| Subject | Fourier Transform Infrared Spectroscopy; internal pressure; tetrachloride; thermal plasma; ambient atmosphere |
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| Abstract | Aiming at producing high temperature structural ceramics, ultra-fine SiC powders were synthesized by the gas phase reaction of silicon tetrachloride with methane in a d.c. thermal plasma. The influence of parameters as the SiCl₄ feeding rate, C/Si and H₂/C molar ratios and internal pressure on the powder properties were investigated. The SiC powders were characterized by chemical analysis, Fourier transform infrared spectroscopy, X-ray diffraction and scanning electronic microscopy. The experimental set-up allows the production of β-SiC powders at a rate of 200 g h⁻¹ with particle size around 0.1 μm. The main impurities in the as-produced powder handled at ambient atmosphere are: oxygen (1.8–2.5%) and free carbon (3–4%). Interesting relationships were found between the SiCl₄ feeding rate and the H₂/C molar ratio and between the C/Si molar ratio and the internal pressure. The internal pressure plays a major role in controlling the particle size. |
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| Publication date | 1991-01 |
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| Publisher | Springer |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 763fad84-4904-4a8b-a21c-306168195bcd |
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| Record created | 2024-03-04 |
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| Record modified | 2024-03-04 |
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