共 50 条
Effect of loading spectrum with different single pulsing time on the cyclic ablation of C/C-SiC-ZrB2-ZrC composites in plasma
被引:26
|作者:
Liu, Lei
[1
]
Li, Boyan
[1
]
Feng, Wei
[1
]
Tang, Chengwei
[1
]
Zhang, Jiaping
[2
]
Yao, Xiyuan
[2
]
Yang, Zhong
[1
]
Guo, Yongchun
[1
]
Wang, Ping
[1
]
Zhang, Yang
[1
]
机构:
[1] Xian Technol Univ, Sch Mat & Chem Engn, Xian 710021, Peoples R China
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Ceramic matrix composites;
C/C composite;
Cyclic ablation;
Loading spectrum;
Pulsing time;
C/C-SIC COMPOSITES;
THERMAL-CONDUCTIVITY;
CARBON/CARBON COMPOSITES;
FLEXURAL PROPERTIES;
RESISTANCE;
BEHAVIOR;
MICROSTRUCTURE;
OXIDATION;
CERAMICS;
COATINGS;
D O I:
10.1016/j.corsci.2021.109817
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
To support the application for piston of advanced internal combustion engine and pantograph slide plate of high-speed rail, cyclic ablation with different loading spectrums in alternate plasma combustion and compressed air flow were performed by adjusting single impacting time to understand the characteristics of C/C-SiC-ZrB2-ZrC composites in high frequent pulsing fluid at ultra-high temperature. When the loading time increased from 0.5 to 5 s, the ablation rates rose sharply while the surface temperature changed incrementally. Ablation morphology indicated that the change of dominant ablation mechanism from mechanical erosion to chemical reaction resulted in the sharp rise of the ablation rates.
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页数:7
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