New rapid diamond synthesis technique; using multiplexed pulsed lasers in laboratory ambients

Abstract

QQC, Inc. has developed a revolutionary diamond deposition technique which does not require a vacuum, or H₂, or “chemical” or physical pre-treatment of surfaces. The process utilizes a combination of various pulsed lasers and is performed at the laboratory p-t conditions: with CO₂ and N₂ as shrouding gases. Crystalline diamond films and DLC or, more accurately, tetrahedral non-crystalline carbon (TNC) have been formed on various substrates. On WC cutting tools the rate of deposition of crystalline diamond is approximately 1 μm/sec. In the context of 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.

Key words:

• Diamond, DLC, synthesis
• Cutting tool coatings
• Surface treatment
• Multiplexed lasers