@inproceedings{e4a3090dbeeb411395b1bd0f5bcefad0,
title = "Synthesis of diamond on WC-Co substrates using a KrF excimer laser in combination with a combustion flame",
abstract = "A KrF excimer laser was used in combination with a combustion flame to deposit diamond films on cemented tungsten carbide (WC-Co) substrates. The laser has a wavelength of 248 nm, a pulse width of 23 ns, a pulse energy range of 84-450 mJ, and a repetition rate up to 50 Hz. Using the combustion flame method, diamond films were deposited on the laser-processed WC-Co substrates for 10 min. The morphologies of the deposited diamond films were examined using a scanning electron microscopy (SEM). The composition and bonding structures in the deposited films were studied by energy dispersive X-ray analysis (EDX) and Raman spectroscopy, respectively. The film adhesion was characterized by scratching a razor across the films. It was found that C composition on WC-Co substrate surfaces was eliminated by the laser irradiation. As a consequence, diamond nucleation density decreased and diamond grains grew larger in the laser-processed areas. Based on the experimental results, a film growth mechanism at different deposition temperature ranges corresponding to pre-deposition laser-surface-treatment effects was proposed.",
keywords = "Combustion flame, Diamond deposition, KrF excimer laser, Raman spectroscopy, Scanning electron microscopy, Surface properties, Tungsten carbide",
author = "Han, {Y. X.} and H. Ling and Lu, {Y. F.}",
year = "2007",
doi = "10.1117/12.700733",
language = "English (US)",
isbn = "0819465720",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Laser-based Micro- and Nanopackaging and Assembly",
note = "Laser-based Micro- and Nanopackaging and Assembly ; Conference date: 22-01-2007 Through 24-01-2007",
}