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Title: Effects of Surface Roughness on the Deposition of Adherent Diamond Coatings on WC-Co substrates
Authors: Chou;C. C.;Lee;J. W.;Lin;H. H.;Wang;W. K.
Contributors: NTOU:Department of Mechanical and Mechatronic Engineering
Keywords: diamond film;hot filament CVD;surface characterization;coatings
Date: 2008-05
Issue Date: 2011-10-20T08:08:16Z
Publisher: the 2nd International Conference on New Diamond and Nano Carbons (NDNC2008)
Abstract: Diamond thin films were deposited on WC-Co substrates by hot filament chemical vapor deposition (HFCVD) process to improve the tribological performance. The influence of substrate’s surface roughness was found playing an important role in the nucleation stage and the later growing rate as well. In this study, we systematically investigated the effects of substrate’s surface roughness from various original values. Preprocessing, in diamond aqua suspensions with two particle diameters, by supersonic vibrator were also implemented. The diamond deposited substrates were examined by Rockwell-C indentation, scanning electron microscopy (SEM) and Raman spectroscopy. XRD was also applied to identify the relation between coating’s quality and surface’s morphology. The mentioned observation from the instrumental results and the synergy of substrate’s surface roughness and mean diameter of diamond particles in the suspensions were discussed and concluded.
Appears in Collections:[Department of Mechanical and Mechatronic Engineering] Periodical Articles

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