Laser-assisted combustion-flame synthesis of diamond films

Y. X. Han, H. Ling, Y. F. Lu

Research output: Contribution to conferencePaper

3 Scopus citations

Abstract

Diamond films were synthesized on cemented tungsten carbide (WC-Co) substrates in open atmosphere using a C2H2/O2 combustion flame with a gas ratio (C2H2/O2) of 0.90. Before, after, and during the synthesis process, a KrF excimer laser with a wavelength of 248 nm and a pulse width of 23 ns was used to illuminate the deposition area. The surface morphology and structures of the deposited films were studied by scanning electron microscopy (SEM) and Raman spectroscopy, respectively. From the SEM images diamond crystals with {100}, {110}, and {111} facets could be observed. The Raman spectra showed an obvious diamond peak along with a broad amorphous carbon peak, which indicated high sp3-bonded structures in the deposited films. The effects of a KrF excimer laser irradiation on the combustion-flame deposition process were discussed.

Original languageEnglish (US)
DOIs
StatePublished - 2006
EventICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics - Scottsdale, AZ, United States
Duration: Oct 30 2006Nov 2 2006

Conference

ConferenceICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics
CountryUnited States
CityScottsdale, AZ
Period10/30/0611/2/06

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Geochemistry and Petrology

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    Han, Y. X., Ling, H., & Lu, Y. F. (2006). Laser-assisted combustion-flame synthesis of diamond films. Paper presented at ICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics, Scottsdale, AZ, United States. https://doi.org/10.2351/1.5060865