Article
Materials Science, Multidisciplinary
Bo Wang, Jiayan Li, Fan Zhang, Ping He, Wei Shi, Yi Tan
Summary: To reduce delamination or spallation of the Si layer during thermal cycles and enhance its oxidation resistance, a SiC-nanowire-reinforced Si layer (SiCnws-Si layer) was prepared on carbon/silicon carbide (C/SiC) composites using chemical vapor reaction and atmospheric plasma spray (APS). The introduction of SiC nanowires improved the bonding strength, toughness, and thermal stress relief of the Si layer. Results showed that the SiCnws-Si-coated C/SiC composites had lower weight loss (8.3%-60.9%) than Si layer after 12 thermal cycles between room temperature and 1673 K, and the tensile strength of the SiCnws-Si-coated C/SiC composites exceeded 3.9 MPa due to the bridging effect of SiC nanowires on the interface.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Ceramics
Bo Wang, Gui Li, Jiayan Li, Long Wang, Xinpeng Zhuang, Wei Shi, Yi Tan
Summary: The introduction of root structure improves the oxidation resistance and bonding strength of chemical vapor deposition (CVD) SiC coating on C/SiC composites. The designed and prepared root structure, consisting of pores and SiC nanowires, enhances the bonding strength between the matrix and SiC coating, reduces coating cracking or spalling, and improves coating's oxidation resistance.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Running Wang, Jiaping Zhang, Bing Liu, Jie Fei, Qiangang Fu
Summary: By introducing a tailored SiC-C interphase, the carbon fiber can be effectively protected, improving the mechanical and ablation properties of leading edge shaped C/C-ZrC-SiC composites.
Article
Materials Science, Ceramics
Lei Zhou, Qiangang Fu, Dou Hu, Yalong Wei, Mingde Tong, Jiaping Zhang
Summary: The GSI-SiC-Si coating showed lower roughness, better mechanical and anti-oxidation properties compared to the PC-SiC-Si coating. It could effectively protect C/C composites under high temperatures for an extended period without weight loss.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Metallurgy & Metallurgical Engineering
Meng-meng Shao, Zhao-ke Chen, Xin-shuang Wang, Qing-bo Wen, Xiang Xiong
Summary: To enhance the anti-ablation property of C/C composites, ZrC-SiC-MoSi2 coatings with different Zr contents were prepared on C/C-SiC-ZrC ceramic matrix composites. The ablation behavior of the coated composites was studied in an oxyacetylene torch environment with varying oxygen and acetylene fluxes. The results showed that the particle sizes of ZrC and SiC in the coatings decreased and distributed more homogeneously with the increase of Zr content. The ablation mechanisms of the coatings changed from oxidation to oxidation plus evaporation and then to the combination of oxidation, evaporation, and denudation with the increase of oxygen and acetylene fluxes.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Materials Science, Multidisciplinary
Ningning Yan, Jiaping Zhang, Tianyu Liu, Wei Xie, Qiangang Fu, Jia Sun, Qingliang Shen
Summary: A ZrC-SiC-Si coating prepared by one-step vapor silicon infiltration was applied to improve the ablation resistance of nose-shaped ZrC/C composites. The coating exhibited good bonding strength, high hardness, and elastic modulus. It effectively reduced the ablation rate of the composites and maintained a high heat resistance capacity.
Article
Materials Science, Ceramics
Tao Feng, Mingde Tong, Wanbo Hou, Hejun Li, Hongjiao Lin, Shifeng Wen
Summary: Replacing carbon fibers with SiC fibers improves the reliability of Cf/HfC-SiC composites after ablation, with SiCf/HfC-SiC composites showing a higher retention rate of bending strength post-ablation due to the good oxidation resistance of SiC fibers.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Xinfa Tian, Xiaohong Shi, Li Yang, Hejun Li, Hongjiao Lin
Summary: The modified precursor infiltration pyrolysis (PIP) method was used to prepare an integrated doped ceramic matrix and coating with SiC nanowires, resulting in a composite with improved bonding strength and ablation resistance. The integration of the coating and matrix enabled the formation of a continuous oxide layer in the ablation process, effectively blocking oxygen and heat. This systematic improvement led to significantly lower mass and linear ablation rates compared to traditional composites.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Ningning Yan, Qiangang Fu, Jiaping Zhang, Qingliang Shen
Summary: Porous zirconium carbide ceramics with stepped morphology were prepared by evaporating solvent combined with high-temperature sintering, where the morphology can be tuned by optimizing the sintering temperature. The stepped morphology was found to improve the adhesion strength between pyrocarbon and ZrC skeleton through mechanical interlocking. This study provides a strategy for enhancing the interfacial bonding strength of ultra-high temperature composites through morphology design.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Qinchuan He, Hejun Li, Qing Tan, Jinhua Lu, Xuemin Yin
Summary: The particle size of ultra-high temperature ceramics (UHTCs) is critical for the ablation behavior of C/C-UHTCs composites. This study focused on the role of ZrC particle size on the ablation resistance of C/C-SiC-ZrC composites. The results showed that ZrC particles with a size of -1 μm produced a broken oxide coating, indicating unsatisfactory ablation resistance. ZrC particles with a size of -3.8 μm could not form a dense oxide coating, leading to oxygen corrosion. ZrC particles with a size of -2.7 μm promoted the formation of a continuous and viscous oxide coating, delaying oxygen diffusion and resisting airflow scouring.
Article
Materials Science, Ceramics
Bo Wang, Fan Zhang, Jianjie Hao, Ping He, Wei Shi, Yi Tan, Jiayan Li
Summary: SiC coatings reinforced with SiC nanowires were prepared on C/SiC composites. The introduction of SiC nanowires effectively improved the interface bonding strength, enhancing the thermal cycling and mechanical properties of the coating.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Yong Gao, Bai-Lin Zha, Jin-Jin Wang, Zhen-Sheng Sun, Zhao-Fu Zhang, Yi-Ang Shi
Summary: In this study, C/C-SiC and C/C-SiC-ZrC composites were prepared and their ablation resistance under hypersonic oxygen-rich environmental conditions was investigated. The results showed that C/C-SiC composites exhibited excellent ablation resistance at relatively low temperature and speed, while the high-temperature ablation resistance of ZrC-modified C/C-SiC-ZrC composites significantly improved.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Jing Xu, Lingjun Guo, Jingan Kong, Yuan Ma, Hanhui Wang, Jiancheng Wang
Summary: The bending property of C/C-ZrC-SiC, C/C-SiC, and C/C composites after ablation was studied, and it was found that C/C-ZrC-SiC composites exhibited better laser ablation resistance and higher bending strength retention compared to the other two. The excellent ablation resistance and residual bending strength of C/C-ZrC-SiC composites were attributed to the lowest ablative temperature and the effective protection of ZrO2 grain and ZrO2-SiO2 layer. However, the ablation damage induced a fracture behavior transformation in the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Coatings & Films
Jingchao Ma, Sijie Kou, Yujie Ma, Xu Ma, Chenghua Luan, Juanli Deng, Shangwu Fan, Chidong Liu, Laifei Cheng
Summary: C/C-ZrC-SiC composites with La-doped ZrC-SiC-ZrSi2 coatings containing different La contents were prepared. The ablation behaviors of the composites under oxyacetylene flame were studied, and the effects of La2O3 addition on the microstructure and phase composition evolution were investigated. The results showed that the composites with 15 wt% La2O3 exhibited better ablation resistance due to the formation of a dense oxide layer consisting of m-ZrO2, t-ZrO2, and Zr0.9La0.1O1.95 phases.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zhigang Zhao, Kezhi Li, Gang Kou, Wei Li
Summary: The cyclic and single ablation behaviors of C/C-ZrC-SiC and C/C-ZrC composites prepared by reactive melt infiltration were studied. It was found that the C/C-ZrC-SiC composites showed better ablation resistance under cyclic ablation mode compared to C/C-ZrC composites. The formation of an effective heat/oxygen protection layer on the ablated surface contributed to the desirable ablation resistance of C/C-ZrC-SiC composites during single ablation.