Diamond growth in combustion flames
作者:
R. S. Yalamanchi,
K. S. Harshavardhan,
期刊:
Journal of Applied Physics
(AIP Available online 1990)
卷期:
Volume 68,
issue 11
页码: 5941-5943
ISSN:0021-8979
年代: 1990
DOI:10.1063/1.346927
出版商: AIP
数据来源: AIP
摘要:
Diamond crystallites were synthesized using various oxygen‐hydrocarbon flames. The flames have been profiled in real time using a nonintrusive diagnostic technique. Optical emission spectra for different zones have been recorded and the active species identified. Diamond growth was observed only in the thermodynamically unequilibriated primary combustion zone of the flames. Carbon‐bearing species, atomic hydrogen, and atomic oxygen, noted to be critical for diamond growth, were observed in the flames. The diamond growth was confirmed by x‐ray diffraction, laser‐Raman analysis, and scanning electron microscopy. The study offers the first insight into the flame spectra in the context of diamond synthesis at atmospheric pressures.
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