Textured polycrystalline diamond films on Cu metal substrates by hot filament chemical vapor deposition

Chemical vapor deposition of diamonds on metal substrates is now-a-days the focus of attraction in diamond film technology. In these investigations, we report polycrystalline textured diamond growth on copper substrate. The diamond films have been grown by the hot filament chemical vapor deposition technique. Prior to diamond deposition copper substrates are pretreated by various approaches — by modifying the substrate surface, by laser irradiation, and by intermediate titanium nitride (TiN) ceramic layer coating. The structural analysis is done by X-ray diffraction, scanning electron microscopy and Raman spectroscopy. While there is no diamond growth on the laser modified substrate, highly faceted polycrystalline diamond crystals are shown to grow on the TiN buffered copper substrates.