TY - JOUR
T1 - Ablative and Mechanical Properties of C/C-ZrC Composites Prepared byPrecursor Infiltration and Pyrolysis Process
AU - Li, Kezhi
AU - Xie, Jing
AU - Li, Hejun
AU - Fu, Qiangang
N1 - Publisher Copyright:
© 2014.
PY - 2015
Y1 - 2015
N2 - C/C-ZrC composites with continuous ZrC matrix were prepared by precursor infiltration and pyrolysis process using zirconium-containing polymer. Ablation properties of the composites were investigated by oxyacetylene flame with heat flux of 2380 and 4180kW/m2, respectively. The results showed that C/C-ZrC composites exhibited excellent ablation resistance under the heat flux of 2380kW/m2 for 120s and a tree-coral-like ZrO2 protective layer formed after ablation. However, when the heat flux increased to 4180kW/m2, the maximum temperature of ablated surface reached 2500°C and a strong degradation of ablation resistance was observed due to the weak bonding between the formed ZrO2 layer and the composites. The flexural strength of C/C-ZrC composites was 110.7±7.5MPa. There were a large number of carbon fiber bundles pull-out, and the composites exhibited a pseudo-plastic fracture behavior.
AB - C/C-ZrC composites with continuous ZrC matrix were prepared by precursor infiltration and pyrolysis process using zirconium-containing polymer. Ablation properties of the composites were investigated by oxyacetylene flame with heat flux of 2380 and 4180kW/m2, respectively. The results showed that C/C-ZrC composites exhibited excellent ablation resistance under the heat flux of 2380kW/m2 for 120s and a tree-coral-like ZrO2 protective layer formed after ablation. However, when the heat flux increased to 4180kW/m2, the maximum temperature of ablated surface reached 2500°C and a strong degradation of ablation resistance was observed due to the weak bonding between the formed ZrO2 layer and the composites. The flexural strength of C/C-ZrC composites was 110.7±7.5MPa. There were a large number of carbon fiber bundles pull-out, and the composites exhibited a pseudo-plastic fracture behavior.
KW - Ablation performance
KW - C/C composites
KW - Ceramic-matrix composites
KW - Mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=84922286142&partnerID=8YFLogxK
U2 - 10.1016/j.jmst.2014.01.015
DO - 10.1016/j.jmst.2014.01.015
M3 - 文章
AN - SCOPUS:84922286142
SN - 1005-0302
VL - 31
SP - 77
EP - 82
JO - Journal of Materials Science and Technology
JF - Journal of Materials Science and Technology
IS - 1
ER -