Journal
WEAR
Volume 494-495, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.wear.2022.204239
Keywords
Diamond film; Erosion wear; HFCVD
Funding
- Russian Science Foun-dation [21-79-10004]
- Tomsk Polytechnic University development program
- Russian Science Foundation [21-79-10004] Funding Source: Russian Science Foundation
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Thick diamond films were synthesized on Si substrate with different methane concentration using HFCVD method. Regardless of the microstructure, diamond coatings exhibit the same erosion mechanisms. The microcrystalline diamond coating shows the maximum erosion resistance.
Thick diamond films are synthesized on Si substrate by HFCVD method with different methane concentration (up to 21.9 vol %) in the gas mixture. The erosion resistance of the obtained coatings was investigated by the solid particle erosion of SiC. We show that, regardless of the microstructure, diamond coatings exhibit the same erosion mechanisms. Ring and radial cracks, as well as pin-holes and a local delamination of diamond film were detected for all synthesized films. We found that despite the high degree of initial roughness, the microcrystalline diamond coating showed the maximum erosion resistance at all stages of erosion experiments.
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