TY - JOUR
T1 - Influence of copper contamination on ablation damage of C/SiC composites under simulated thermal environment of arc heater
AU - Pi, Huilong
AU - Song, Feng
AU - Wang, Hong Da
AU - Ren, Ke
AU - Wang, Yiguang
N1 - Publisher Copyright:
© 2021 Elsevier Ltd and Techna Group S.r.l.
PY - 2021/8/1
Y1 - 2021/8/1
N2 - Carbon fiber (CF) reinforced silicon carbide composites (C/SiC) are high-performance lightweight and high-strength materials, rendering promise as hot-structure materials for high-speed aircraft. However, it is critical to evaluate the performance of C/SiC composites in simulated aerodynamic thermal environment due to the impure air of wind tunnel. Herein, we analyze the influence of copper contamination on ablation properties of C/SiC composites in arc heater. Failure mechanism of C/SiC composite is revealed by combining experimental results of static oxidation and theoretical evaluation of ablation process under arc heating. Overall, the presence of copper accelerates oxidation and glassification processes of SiC matrix by forming low-temperature compounds. In addition, the influence of fiber orientation on ablation damage of C/SiC composites is evaluated by combining the distribution of copper-containing phases, airflow distribution, and discrepancies in direction-based thermal conductivity. Results reveal that continuous CF-reinforced micro-zone ceramics resist airflow shear denudation. Furthermore, ablation behavior of needle-punched C/SiC composites under arc heating is discussed in detail.
AB - Carbon fiber (CF) reinforced silicon carbide composites (C/SiC) are high-performance lightweight and high-strength materials, rendering promise as hot-structure materials for high-speed aircraft. However, it is critical to evaluate the performance of C/SiC composites in simulated aerodynamic thermal environment due to the impure air of wind tunnel. Herein, we analyze the influence of copper contamination on ablation properties of C/SiC composites in arc heater. Failure mechanism of C/SiC composite is revealed by combining experimental results of static oxidation and theoretical evaluation of ablation process under arc heating. Overall, the presence of copper accelerates oxidation and glassification processes of SiC matrix by forming low-temperature compounds. In addition, the influence of fiber orientation on ablation damage of C/SiC composites is evaluated by combining the distribution of copper-containing phases, airflow distribution, and discrepancies in direction-based thermal conductivity. Results reveal that continuous CF-reinforced micro-zone ceramics resist airflow shear denudation. Furthermore, ablation behavior of needle-punched C/SiC composites under arc heating is discussed in detail.
KW - C/SiC ablation damage
KW - Copper contamination
KW - Thermal environment of arc heater
UR - http://www.scopus.com/inward/record.url?scp=85105450047&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2021.04.221
DO - 10.1016/j.ceramint.2021.04.221
M3 - Article
AN - SCOPUS:85105450047
SN - 0272-8842
VL - 47
SP - 22016
EP - 22024
JO - Ceramics International
JF - Ceramics International
IS - 15
ER -