TY - JOUR
T1 - Mechanical properties of nano-grain SiO2 glass prepared by spark plasma sintering
AU - He, Zhenhua
AU - Katsui, Hirokazu
AU - Goto, Takashi
N1 - Funding Information:
This research was supported by Grant-in-Aid for Young Scientists (A) No. 16K14089 , the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan . This research was partly supported by the Fundamental Research Funds for the Central Universities (WUT: 2015IVA061 ) and the Doctoral Scientific Research Foundation of Wuhan University of Technology No. 40120233 .
Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2017/2/1
Y1 - 2017/2/1
N2 - Silicon carbide (SiC) layers were deposited on silica (SiO2) glass powder by rotary chemical vapor deposition (RCVD) to form SiO2 glass (core)/SiC (shell) powder; this powder was consolidated by spark plasma sintering (SPS). SiO2 glass powder with a particle size of 250 nm was coated with 5–10-nm-thick SiC layers. The resultant SiO2 glass (core)/SiC (shell) powder was consolidated to form a nano-grain SiO2 glass composite at a relative density above 90% by SPS in the sintering temperature range of 1573–1823 K. The Vickers hardness and fracture toughness of the SiO2 glass composite at 1723 K were found to be 14.2 GPa and 5.4 MPa m1/2, respectively.
AB - Silicon carbide (SiC) layers were deposited on silica (SiO2) glass powder by rotary chemical vapor deposition (RCVD) to form SiO2 glass (core)/SiC (shell) powder; this powder was consolidated by spark plasma sintering (SPS). SiO2 glass powder with a particle size of 250 nm was coated with 5–10-nm-thick SiC layers. The resultant SiO2 glass (core)/SiC (shell) powder was consolidated to form a nano-grain SiO2 glass composite at a relative density above 90% by SPS in the sintering temperature range of 1573–1823 K. The Vickers hardness and fracture toughness of the SiO2 glass composite at 1723 K were found to be 14.2 GPa and 5.4 MPa m1/2, respectively.
KW - High fracture toughness
KW - High hardness
KW - Rotary chemical vapor deposition
KW - SiC-coated SiO glass powder
KW - Spark plasma sintering
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U2 - 10.1016/j.jeurceramsoc.2016.09.020
DO - 10.1016/j.jeurceramsoc.2016.09.020
M3 - Article
AN - SCOPUS:84992188188
VL - 37
SP - 721
EP - 725
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
SN - 0955-2219
IS - 2
ER -