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Early Nucleation of Diamond in a Combustion Flame

Published online by Cambridge University Press:  25 February 2011

Michael T. McClure ,
Jesko A. von Windheim ,
Jeffrey T. Glass  and
John T. Prater
Michael T. McClure
Affiliation:
North Carolina State University, Raleigh, NC
Jesko A. von Windheim
Affiliation:
North Carolina State University, Raleigh, NC
Jeffrey T. Glass
Affiliation:
North Carolina State University, Raleigh, NC
John T. Prater
Affiliation:
Army Research Office, Research Triangle Park, NC
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Abstract

The early stages of a gas phase pretreatment for diamond nucleation in an oxy-acetylene flame were investigated. The pretreatment involved a low oxygen-to-acetylene ratio (Rf = 0.93) performed at 15 mm from the torch on a scratched Si substrate. The nature of the carbon species deposited was analyzed using X-ray photoelectron spectroscopy, Auger electron spectroscopy, and scanning electron microscopy. The pretreatment process produced diamond crystals after 30 seconds and a complete film in the center of the deposition area after 180 seconds. Furthermore, the pretreatment process kept the initial Siob2 layer less than the thickness generated by the control conditions, (Rf = 0.97, d = 10mm). The success of the pretreatment was attributed to changes in the flame structure and chemistry from the control conditions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 270: Symposium M – Novel Forms of Carbon , 1992 , 323
Copyright
Copyright © Materials Research Society 1992

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References

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