TY - JOUR
T1 - Consolidation of diamond composites using silicon carbide-coated diamond powder
AU - Kitiwan, Mettaya
AU - Katsui, Hirokazu
AU - Goto, Takashi
N1 - Publisher Copyright:
© 2017 by American Scientific Publishers.
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
KW - Diamond
KW - Rotary chemical vapour deposition
KW - SiC
KW - SiO
KW - Spark plasma sintering
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U2 - 10.1166/sam.2017.3095
DO - 10.1166/sam.2017.3095
M3 - Article
AN - SCOPUS:85019196536
VL - 9
SP - 1093
EP - 1098
JO - Science of Advanced Materials
JF - Science of Advanced Materials
SN - 1947-2935
IS - 7
ER -