a-Boron-containing pyrocarbons were prepared at temperatures 1400-1650Β°C by simultaneous pyrolytic deposition from gas mixtures containing CH, and BCI, on an induction heated graphite substrate. The deposits thus prepared with boron content in the range O-3 per cent (w/o) were investigated using X-r
12. The deposition and structure of pyrolytic carbon
β Scribed by R.J Diefendorf; F.J Buschmann
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- English
- Weight
- 110 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0008-6223
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β¦ Synopsis
York). A simple model of the deposition of pyrolytic carbon is proposed to explain the apparent inconsistencies between properties and structure. This model considers the importance of the nucleation rate, diffusion, and surface reactions and is based on structure determinations by density and stress measurements, optical and electron microscopy, and X-ray diffraction.
π SIMILAR VOLUMES
## When surface carbons are produced by the pyrolysis of gaseous hydrocarbons in a silica tube heated to about lOOO"C, spectrographic analysis shows the presence of up to 1% silicon even when the carbon is deposited on a metal substrate. It seems likely that hydrocarbon radicals react with silica