Abstract
Diamond powder was coated with a SiC layer by a rotary chemical vapour deposition (RCVD) technique. The SiC layer thickness varied from 15 to 120 nm, depending on the diamond particle size and coating time. The SiC-coated diamond powder was consolidated with 35 wt.% SiO2 by spark plasma sintering (SPS) at 1773-1973 K for 300 s under 100 MPa pressure. The effects of SiC coating, diamond particle size (2μm and 7 μm), and sintering temperature on the densification behaviour were investigated. The diamond/SiO2 composite using SiC-coated diamond powder exhibited higher density than those using uncoated diamond powder. The highest density and Vickers hardness were 99% and 34 GPa, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 1093-1098 |
| Number of pages | 6 |
| Journal | Science of Advanced Materials |
| Volume | 9 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2017 Jan 1 |
Keywords
- Diamond
- Rotary chemical vapour deposition
- SiC
- SiO
- Spark plasma sintering
ASJC Scopus subject areas
- Materials Science(all)
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Kitiwan, M., Katsui, H., & Goto, T. (2017). Consolidation of diamond composites using silicon carbide-coated diamond powder. Science of Advanced Materials, 9(7), 1093-1098. https://doi.org/10.1166/sam.2017.3095