INFLUENCE OF SUBSTRATE SURFACE TREATMENT ON EROSIVE WEAR OF POLYCRYSTALLINE DIAMOND COATINGS DEPOSITED BY GAS-JET METHOD
A. A. Emelyanov1, M. Yu. Plotnikov1, N. I. Timoshenko1, I. B. Yudin1, V. Yu. Ul’yanitsky2, I. S. Batraev2
1Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
2Lavrentyev Institute of Hydrodynamics SB RAS, Novosibirsk, Russia
Keywords: gas-jet deposition, polycrystalline diamond film, microwave discharge, erosive wear
Abstract
The paper presents the results of a study on erosive wear of polycrystalline diamond coatings deposited on a molybdenum substrate. Prior to deposition, the substrate surface was treated with a jet of micro-particles of either corundum or silicon carbide. The diamond coating was applied using a gas-jet deposition method from a H₂-CH₄-Ar mixture activated by a microwave discharge. It was found that preliminary surface treatment of the substrate increases the wear resistance of the resulting diamond coating.
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