Gas Jet Deposition of Diamond on a Steel Surface Covered by a Layer of WC-Co or Mo
A. K. Rebrov1, I. S. Batraev2, T. T. B'yadovskii1, E. V. Gladkikh3, A. S. Useinov3, M. N. Khomyakov4
1Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
2Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
3Technological Institute for Superhard and Novel Carbon Materials, Troitsk, 142190, Russia
4Institute of Laser Physics SB RAS, Novosibirsk, 630090, Russia
Keywords: химическое газофазное осаждение, алмазное покрытие, детонационное напыление, промежуточные слои, механические измерения, chemical vapor deposition, diamond coating, detonation sputtering, intermediate layers, mechanical measurements
Abstract
Results of studying the growth of diamond structures on steel samples with the use of intermediate layers of molybdenum or tungsten carbide cemented by cobalt are reported. The intermediate layers are deposited by means of detonation sputtering. Subsequent deposition of diamond films onto the clad steel samples is formed by the gas jet method and a special thermocatalytic reactor with extended activating surfaces. The nucleation process on the intermediate layer surfaces is intensified by preliminary seeding of the samples in a colloid solution containing nanodiamonds. Information about the phase and structural composition of the resultant samples and about the film surface morphology is obtained by scanning electron microscopy, Raman spectroscopy, and X-ray diffraction analysis. The tribology of the samples is studied with the use of hardness nano-sensor and by Rockwell hardness identation.
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