High-Hardness Diamond Composite Consolidated by Spark Plasma Sintering

被引：24
作者：
He, Zhenhua [1 ,2 ]
Katsui, Hirokazu [2 ]
Goto, Takashi [2 ]
机构：
[1] Wuhan Univ Technol, Key Lab Fiber Opt Sensing Technol & Informat Proc, Minist Educ, Wuhan 430070, Peoples R China
[2] Tohoku Univ, Inst Mat Res, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2016年 / 99卷 / 06期
关键词：
diamond; chemical vapor deposition; silicon carbide; silica; spark plasma sintering; POLYCRYSTALLINE DIAMOND; DIAMOND/CEMENTED CARBIDES; GRAPHITE; PRESSURE;
D O I：
10.1111/jace.14199
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A high-hardness diamond-based composite was synthesized by spark plasma sintering (SPS) under 100 MPa, using SiCcoated 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.
引用
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页码：1862 / 1865
页数：4
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