Ablation properties of Cf/SiCp-Al self-transpiration cooling composites

•Transpiration cooling mechanism of Cf/SiCp-Al composites investigated.•The Cf/SiCp-Al composites can significantly reduced the ablation surface temperature.•The Cf/SiCp-Al composite showed a better anti-ablation property than C/C composites. The high-temperature application of Cf/SiCp-Al composites...

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Bibliographic Details
Published in:Materials letters 2021-02, Vol.285, p.129022, Article 129022
Main Authors: Jia, Jinhao, Xiao, Jing, Xiong, Degan, Ba, Shuxin, Gao, Minqi, Zhao, Kongxun, Xie, Zhi
Format: Article
Language:English
Subjects:
Ablation
Ablation mechanism
Acetylene
Aluminum oxide
Composite materials
Cooling
High temperature
Materials science
Microstructure
Silicon dioxide
Sweat cooling
Three dimensional composites
Transpiration
Transpiration cooling
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Summary:•Transpiration cooling mechanism of Cf/SiCp-Al composites investigated.•The Cf/SiCp-Al composites can significantly reduced the ablation surface temperature.•The Cf/SiCp-Al composite showed a better anti-ablation property than C/C composites. The high-temperature application of Cf/SiCp-Al composites requires the evaluation of the self-transpiration cooling behaviour and ablation property during high temperature erosion. The 3D needle-punched Cf/SiCp-Al composites were prepared through a powder slurry injection technique and a vacuum pressure infiltration method. An erosion test was conducted by oxy-acetylene flame. The microstructure evolution was studied by SEM and EDS. The anti-ablation performance and transpiration cooling behavior underlying the 3D needle-punched Cf/SiCp-Al composites at different ablation times were studied. The obtained results showed that the self-transpiration Cf/SiCp-Al composites significantly reduced the ablation surface temperature. The ablation products Al2O3 and SiO2 provided good self-sealing protection for Cf/SiCp skeleton during the ablation process. The Cf/SiCp-Al composites exhibited a better anti-ablation performance compared with the widely used C/C composite.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2020.129022