Taguchi Optimization of Wear Resistance of CrN Coatings Deposited on WC Substrates Using High-Power Impulse Magnetron Sputtering Technology and Application to High-Speed Micro-Drilling
| Autor: | Y.L. Su, S. T. Chung, W.H. Kao |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Pulse duration 02 engineering and technology Substrate (electronics) engineering.material Sputter deposition 021001 nanoscience & nanotechnology 01 natural sciences chemistry.chemical_compound Coating chemistry Mechanics of Materials Tungsten carbide 0103 physical sciences engineering General Materials Science Composite material High-power impulse magnetron sputtering 0210 nano-technology Chromium nitride Deposition (law) |
| Zdroj: | Journal of Materials Engineering and Performance. 30:6243-6257 |
| ISSN: | 1544-1024 1059-9495 |
| Popis: | Chromium nitride (CrN) coatings were deposited on tungsten carbide (WC) substrates using a high-power impulse magnetron sputtering (HiPIMS) system. The deposition parameters were optimized using the robust Taguchi design method. It was shown that the optimal wear resistance was obtained using a substrate bias of − 80 V, a pulse current of 250 A, a N2/Ar ratio of 30/50, and a pulse duration of 200 μs. The resulting coating not only had an excellent wear resistance, but also showed a high hardness (41.2 GPa) and a superior adhesion strength (Lc >100 N). The coating was deposited on WC-fluted micro-drills and used in a series of high-speed PCB through-hole drilling tests. It was found that the coating improved the lifetime of the micro-drill by a factor of at least two times compared to that of an uncoated drill. |
| Databáze: | OpenAIRE |
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