Lee, JK Anderson, MW Gray, FA John, P Lee, JY Baik, YJ Eun, KY 2024-01-21T07:13:30Z 2024-01-21T07:13:30Z 2021-09-02 2004-04 0925-9635 https://pubs.kist.re.kr/handle/201004/137727 Spherical diamond powders have been synthesised by a multi-cathode d.c. discharge in hydrogen-methane mixtures under conditions conducive to homogeneous nucleation. The polycrystalline powder can be deposited at rates of up to 100 mg/h at substrate temperatures below which thin film diamond growth is negligible. The diameters of the diamond spheres vary from 150 to 600 nm depending on the radial distance on the substrate. The diamond powders have been thermally oxidised in the range of 450-610 degreesC under dry oxygen. Depending on the degree of thermal contact between the powders and the heater block the rate of oxidation can be 'explosive' in which a rapid rise in temperature is observed caused by the exothermic nature of the oxidation of diamond. (C) 2004 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA SURFACE OXYGEN SPECTROSCOPY DESORPTION GEOMETRY BEHAVIOR FILMS DNA Oxidation of CVD diamond powders Article 10.1016/j.diamond.2004.01.026 1 DIAMOND AND RELATED MATERIALS, v.13, no.4-8, pp.1070 - 1074 DIAMOND AND RELATED MATERIALS 13 4-8 1070 1074 scie scopus 000221691100102 2-s2.0-2442453515 Materials Science, Multidisciplinary Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Materials Science Physics Article; Proceedings Paper SURFACE OXYGEN SPECTROSCOPY DESORPTION GEOMETRY BEHAVIOR FILMS DNA diamond CVD diamond powders DC discharge