Park, Jong-Keuk Lee, Hak-Joo Lee, Wook-Seong Baik, Young-Joon 2024-01-20T08:31:28Z 2024-01-20T08:31:28Z 2021-09-02 2014-11-15 0257-8972 https://pubs.kist.re.kr/handle/201004/126114 The effect of various interlayers of TiAl, TiAl/TiAlN, and TiAl/TiAlN/TiAl on the surface morphology and adhesive strength of nanocrystalline diamond (NCD) film on WC-Co substrate was investigated in this study. NCD film was deposited on WC-6 wt% Co substrate by hot filament CVD (HFCVD) technique with H-2-5 vol.% CH4 gas mixture. In contrast to the NCD film deposited on the TiAl terminated interlayers (TiAl and TiAl/TiAlN/TiAl) showing flat surface morphology, hump structure (like cauliflower) was observed for the NCD film deposited on the TiAlN terminated interlayer (TiAl/TiAlN). The surface morphology and adhesion behavior of NCD film deposited on WC-Co substrate with various TiAl(N)-based interlayers were closely related to the nucleation density of NCD and Co diffusion from the substrate. The seed density was observed to be higher when we adopted the TiAl-terminated interlayer, whereas the Co diffusion from the WC-6 wt.% Co substrate was much more retarded by the incorporation of TiAlN into the interlayer. As a result, the adhesion improvement of NCD film was noticeable for the TiAl/TiAlN/TiAl-coated WC-Co substrate. (C) 2014 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA CHEMICAL-VAPOR-DEPOSITION WEAR-RESISTANCE CUTTING TOOLS THIN-FILMS COATINGS IMPROVEMENT STRENGTH Effect of TiAl-based interlayer on the surface morphology and adhesion of nanocrystalline diamond film deposited on WC-Co substrate by hot filament CVD Article 10.1016/j.surfcoat.2014.09.053 1 SURFACE & COATINGS TECHNOLOGY, v.258, pp.108 - 113 SURFACE & COATINGS TECHNOLOGY 258 108 113 scie scopus 000346895000011 2-s2.0-84912526716 Materials Science, Coatings & Films Physics, Applied Materials Science Physics Article CHEMICAL-VAPOR-DEPOSITION WEAR-RESISTANCE CUTTING TOOLS THIN-FILMS COATINGS IMPROVEMENT STRENGTH Adhesion Nanocrystalline diamond film Surface morphology Interlayer WC-Co insert