Improvement of the Tool Life of a Micro-End Mill Using Nano-Sized SiC/Ni Electroplating Method
| Autor: | Sung-Hoon Ahn, Gyu-Beom Jang, Kwang-Su Kim, Shin Young Park, Ji Young Roh, Caroline Sunyong Lee |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Scanning electron microscope Metallurgy Biomedical Engineering chemistry.chemical_element Diamond Bioengineering General Chemistry engineering.material Condensed Matter Physics chemistry.chemical_compound Nickel Coating chemistry Tungsten carbide engineering End mill General Materials Science Electroplating Layer (electronics) |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 12:3376-3379 |
| ISSN: | 1533-4899 1533-4880 |
| DOI: | 10.1166/jnn.2012.5547 |
| Popis: | High mechanical properties of a tungsten carbide micro-end-mill tool was achieved by extending its tool life by electroplating nano-sized SiC particles (< 100 nm) that had a hardness similar to diamond in a nickel-based material. The co-electroplating method on the surface of the micro-end-mill tool was applied using SiC particles and Ni particles. Organic additives (saccharin and ammonium chloride) were added in a Watts bath to improve the nickel matrix density in the electroplating bath and to smooth the surface of the co-electroplating. The morphology of the coated nano-sized SiC particles and the composition were measured using Scanning Electron Microscope and Energy Dispersive Spectrometer. As the Ni/SiC co-electroplating layer was applied, the hardness and friction coefficient improved by 50%. Nano-sized SiC particles with 7 wt% were deposited on the surface of the micro-end mill while the Ni matrix was smoothed by adding organic additives. The tool life of the Ni/SiC co-electroplating coating on the micro-end mill was at least 25% longer than that of the existing micro-end mills without Ni/SiC co-electroplating. Thus, nano-sized SiC/Ni coating by electroplating significantly improves the mechanical properties of tungsten carbide micro-end mills. |
| Databáze: | OpenAIRE |
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