Inhomogénéités dans des cokes obtenus à partir de résines d'alcool furfurylique

✍ Scribed by Lucien Bonnetain; Noël Ozanne; Joseph Pelissier

• Publisher: Elsevier Science
• Year: 1970
• Tongue: English
• Weight: 839 KB
• Volume: 8
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(70)90082-5

✦ Synopsis

ment of the carbon species in the growing layer.

In addition, it is noticeable that in our experiments the deposition rate was considerably higher than 4. that discussed by Cullis and Yates [ 101 for cyanogen as a starting material. Therefore if there is any 5: influence of these molecules on the ordering processes this should affect the properties of the layers even more strongly. Since this is obviously 7. not true, the observations reported here may support the further general assumption that at 8. deposition temperatures of above 2000°C the chlorine and carbon atoms might exist in a 9. separated state in the neighbourhood nearest to the surface and on the hot growing surface 10. respectively. The graduation of the association of the atoms with one another depends on their 11. energetic level, e.g. carbon is found in the form of C&species in accordance with thermodynamic 12. computations and masspectrometric results (at deposition from CH4 in the form of C&H-species with n = 2-4) [21,22].