Premium
High‐Hardness Diamond Composite Consolidated by Spark Plasma Sintering
Author(s) -
He Zhenhua,
Katsui Hirokazu,
Goto Takashi
Publication year - 2016
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14199
Subject(s) - spark plasma sintering , materials science , diamond , vickers hardness test , composite number , microstructure , sintering , chemical vapor deposition , composite material , metallurgy , indentation hardness , nanotechnology
A high‐hardness diamond‐based composite was synthesized by spark plasma sintering (SPS) under 100 MPa, using SiC‐coated diamond powder prepared via chemical vapor deposition (CVD). SiC layers 20–40 nm were uniformly deposited on diamond powders by a rotary CVD technique. The SiC‐coated diamond powder was consolidated with SiO2 powder by SPS at the sintering temperature of 1873 K, resulting in the formation of fully compacted mosaic microstructure with the Vickers hardness of 36 GPa.