Comparison between acid leaching and siliciding pre-treatments on the erosive wear performance of diamond coatings on cemented carbide substrates
| Autor: | R.V. Flood, Denis P. Dowling, G Morgan, M.L. McConnell, K. Donnelly |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Pre treatment
Materials science Metallurgy Metals and Alloys chemistry.chemical_element Diamond Surfaces and Interfaces Tribology engineering.material Surfaces Coatings and Films Electronic Optical and Magnetic Materials Carbide chemistry.chemical_compound Impact resistance chemistry Silicide Materials Chemistry Cemented carbide engineering Cobalt |
| Zdroj: | Thin Solid Films. :239-242 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/s0040-6090(00)01303-1 |
| Popis: | A major difficulty associated with growing diamond on cemented carbide is the cobalt binder that can cause graphitisation of the growing diamond film. This study investigates the influence of two pre-treatment methods, acid leaching and silicide formation, on the erosive impact resistance of the diamond films. The diamond films were deposited onto the treated cemented carbide substrates (6% Co) using a microwave Surfajet technique. The erosive performance was investigated using a centripetal erosion tester in which SiC particles (60–180 mesh size) were impacted normally onto the coated substrates at an impact velocity of 12–60 ms−1. The erosive impact resistance of diamond was found to increase with film thickness in the range 1–11 μm. The erosive wear performance of the diamond films deposited on the silicide treated carbide were found to be comparable with the performance of those obtained using the acid leaching pre-treatment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect