TY - JOUR
T1 - Microstructure and mechanical properties of ZrB2-SiC composites prepared by gelcasting and pressureless sintering
AU - Zhang, Rubing
AU - He, Rujie
AU - Zhang, Xinghong
AU - Fang, Daining
PY - 2014/3
Y1 - 2014/3
N2 - ZrB2-SiC ceramic composites were prepared through water-based gelcasting and pressureless sintering. Effects of the pressureless sintering temperature (1500-2000 C), heating rate (5-15 C/min) and soaking time (0.5-2 h) on the relative density, microstructure and mechanical properties of the ZrB2-SiC composites were investigated in detail. A sintering temperature of 2000 C, a heating rate of 5 C/min and a soaking time of 2 h were found to be the optimal pressureless sintering procedure. The relative density, flexural strength and fracture toughness of the ZrB2-SiC composite prepared under the optimum condition were 97.8%, 403.1 ± 27.8 MPa and 4.05 ± 0.42 MPa·m1/2, respectively.
AB - ZrB2-SiC ceramic composites were prepared through water-based gelcasting and pressureless sintering. Effects of the pressureless sintering temperature (1500-2000 C), heating rate (5-15 C/min) and soaking time (0.5-2 h) on the relative density, microstructure and mechanical properties of the ZrB2-SiC composites were investigated in detail. A sintering temperature of 2000 C, a heating rate of 5 C/min and a soaking time of 2 h were found to be the optimal pressureless sintering procedure. The relative density, flexural strength and fracture toughness of the ZrB2-SiC composite prepared under the optimum condition were 97.8%, 403.1 ± 27.8 MPa and 4.05 ± 0.42 MPa·m1/2, respectively.
KW - Composites
KW - Mechanical properties
KW - Microstructure
KW - Pressureless sintering
UR - http://www.scopus.com/inward/record.url?scp=84889645934&partnerID=8YFLogxK
U2 - 10.1016/j.ijrmhm.2013.11.008
DO - 10.1016/j.ijrmhm.2013.11.008
M3 - Article
AN - SCOPUS:84889645934
SN - 0263-4368
VL - 43
SP - 83
EP - 88
JO - International Journal of Refractory Metals and Hard Materials
JF - International Journal of Refractory Metals and Hard Materials
ER -