| DOI | Trouver le DOI : https://doi.org/10.1007/BF02402962 |
|---|
| Auteur | Rechercher : Allaire, F.1; Rechercher : Parent, L.1; Rechercher : Dallaire, S.1 |
|---|
| Affiliation | - Conseil national de recherches du Canada
|
|---|
| Format | Texte, Article |
|---|
| Sujet | Fourier Transform Infrared Spectroscopy; internal pressure; tetrachloride; thermal plasma; ambient atmosphere |
|---|
| Résumé | 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. |
|---|
| Date de publication | 1991-01 |
|---|
| Maison d’édition | Springer |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 763fad84-4904-4a8b-a21c-306168195bcd |
|---|
| Enregistrement créé | 2024-03-04 |
|---|
| Enregistrement modifié | 2024-03-04 |
|---|
