| Autor: |
Sadao Takeuchi, Takashi Muraishi |
| Rok vydání: |
2010 |
| Předmět: |
|
| Zdroj: |
Journal of The Surface Finishing Society of Japan. 61:274-278 |
| ISSN: |
0915-1869 |
| DOI: |
10.4139/sfj.61.274 |
| Popis: |
For this study, single-crystal and polycrystalline diamond films with different boron contents were synthesized in a hot-filament chemical vapor deposition (CVD) apparatus to evaluate the mechanical properties of these films. Boron was added to the diamond by introducing B(CH3)3 :trimethyl boron diluted to 1000 ppm with hydrogen into the diamond-synthesis atmosphere. The synthesized diamond film's crystallinity was evaluated using Raman spectroscopy. The Hertz fracture strength was measured using a diamond-ball indenter. Furthermore, the wear resistance of the film was evaluated using a wear testing machine.The results indicate that the crystallinity of the single-crystal diamond film increased concomitantly with increasing boron content. Furthermore, the Hertz fracture strength increased by 20% with the addition of boron. Results clarified that the wear volume of polycrystalline diamond film decreased to approximately one-third its usual value by the addition of boron. These results show that the mechanical properties of boron-doped diamond films can be improved considerably by adding an appropriate amount of boron. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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