Enhanced nucleation of diamond on polycrystalline Ni by d.c. glow discharge in hot filament CVD |
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Affiliation: | 1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1 Kusongdong, Yusonggu, Taejon, 305-701, South Korea;2. National Creative Research Initiative Center for Microstructure Science of Materials, College of Engineering, Seoul National University, Seoul, 151-742, South Korea |
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Abstract: | If a negative glow discharge is produced around a cathode wire above a polycrystalline Ni substrate, the diamond nucleation rate is greatly enhanced in the hot filament chemical deposition process. The diamond deposition depends on the surface orientation of the Ni grains, and occurs preferentially on faceted surfaces with hill-and-valley structures. The deposited diamond particles show a tendency to orient in one direction. |
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