Consolidation of diamond composites using silicon carbide-coated diamond powder

Mettaya Kitiwan; Hirokazu Katsui; Takashi Goto

doi:10.1166/sam.2017.3095

Consolidation of diamond composites using silicon carbide-coated diamond powder

Mettaya Kitiwan, Hirokazu Katsui, Takashi Goto

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

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	https://doi.org/10.1166/sam.2017.3095
Publication status	Published - 2017

Keywords

Diamond
Rotary chemical vapour deposition
SiC
SiO
Spark plasma sintering

ASJC Scopus subject areas

Materials Science(all)

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10.1166/sam.2017.3095

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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.",

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AU - Kitiwan, Mettaya

AU - Katsui, Hirokazu

AU - Goto, Takashi

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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Consolidation of diamond composites using silicon carbide-coated diamond powder

Abstract

Keywords

ASJC Scopus subject areas

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