Preparation of super-hard coatings by pulsed laser deposition |
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Authors: | G Reisse S Weissmantel D Rost |
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Institution: | (1) Hochschule Mittweida, University of Applied Sciences, Technikumplatz 17, 09648 Mittweida, Germany |
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Abstract: | Amorphous diamond-like carbon (DLC) films and nanocrystalline cubic boron nitride (c-BN) films were prepared by pulsed laser deposition. DLC films with 80 to 85% sp3 bonds prepared at a laser fluence above 6 J/cm2 and a substrate temperature below 100 °C show high compressive stresses in the range of 8 to 10 GPa. Those stresses can be completely removed by means of pulsed laser annealing, allowing the preparation of DLC films with several-micrometre thickness. c-BN films were prepared with additional ion-beam bombardment at a substrate temperature of 250 °C. The properties of DLC and c-BN films deposited at high growth rates up to 100 nm/min are presented . PACS 81.15.Fg; 68.60.Bs: 62.40.+i |
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