P. Mistry et al., NEW RAPID DIAMOND SYNTHESIS TECHNIQUE - USING MULTIPLEXED PULSED LASERS IN LABORATORY AMBIENTS, MATERIALS RESEARCH INNOVATIONS, 1(3), 1997, pp. 149-156
QQC, Inc. has developed a revolutionary diamond deposition technique w
hich does not require a vacuum, or H-2, or ''chemical'' or physical pr
e-treatment of surfaces. The process utilizes a combination of various
pulsed lasers and is performed at the laboratory p-t conditions: with
CO2 and N-2 as shrouding gases. Crystalline diamond films and DLC or,
more accurately, tetrahedral non-crystalline carbon (TNC) have been f
ormed on various substrates. On WC cutting tools the rate of depositio
n of crystalline diamond is approximately 1 mu m/sec. In the context o
f fabricating a diamond coating on a substrate, the entire pre-surface
treatment and material synthesis process including a coating regime,
is performed in one step.