Article
Materials Science, Ceramics
Hanchun Ma, Qiang Miao, Wenping Liang, Yangyang Liu, Hao Lin, Hairui Ma, Shiwei Zuo, Lin Xue
Summary: Y2O3 modified ZrB2-SiC coatings fabricated on C/C composites by atmospheric plasma spraying demonstrated excellent oxidation resistance and thermal stability at high temperatures. The presence of Y2O3 effectively inhibited the phase transition of ZrO2, preventing cracks caused by volume expansion of the coating. The ceramic phases Y2SiO5, Y2Si2O7, and ZrSiO4 reduced the volatilization of SiO2, contributing to the overall protective performance of the coatings.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Dou Hu, Qiangang Fu, Lei Zhou, Xiaoxuan Li, Jiaping Zhang
Summary: This study investigated the cracking behavior along the interface in thermally sprayed ZrB2-SiC coating at high temperatures and proposed a laminated coating solution to improve structural integrity by restraining surface ZrO2 grain growth.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Guanghui Feng, Hejun Li, Xiyuan Yao, Lei Chen, Yulan Yu, Hanhui Wang, Miaomiao Chen
Summary: The ablation behavior of ZrC and ZrO2 coatings on SiC-coated carbon/carbon composites was studied under different heat fluxes, demonstrating that ZrO2 coating exhibited denser oxide layer and lower mass consumption compared to ZrC. The differences were attributed to higher surface temperature and lower melting point of ZrO2 coating, leading to easier sintering during ablation.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Bo-Wen Chen, De-Wei Ni, Jun Lu, Fei-Yan Cai, Xue-Gang Zou, Hai-Jun Zhou, Shao-Ming Dong
Summary: Research showed that Cf/ZrB2-SiC composite can form a protective oxide layer under high-temperature ablation conditions, but the structural stability of the oxide layer needs optimization to retard the aggregation, growth, and phase transition of ZrO2.
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
Chemistry, Physical
Huafeng Quan, Shanying Sui, Lianyi Wang, Ruiying Luo, Xiaohui Dong
Summary: The study proposed a strategy for preparing multilayer SiC/ZrB2-CrSi2-Si/SiC coatings at low temperatures, which can enhance the oxidation resistance of C/C composites, and emphasized the importance of organosilicon in the processes of self-healing and oxidation resistance.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Guanghui Feng, Hejun Li, Xiyuan Yao, Hang Zhou, Yulan Yu, Jinhua Lu
Summary: Alternate coatings of HfC-TaC/HfC-SiC with different sublayer thicknesses were fabricated on SiC-coated carbon/carbon composites, showing the best ablation performance due to the dense oxide layer and stress release from dendritic cracks. Additionally, exfoliation at the interface of adjacent sublayers in some coatings led to violent evaporation of exposed sublayers.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Jian Zhang, Yulei Zhang, Yanqin Fu, Xiaofei Zhu, Ruicong Chen
Summary: The SiC/HfC coating with multi-layer alternating structure prepared on C/C composites by LPCVD showed improved ablation resistance under ultra-high temperature environments, attributed to the formation of Hf-Si-O sticky glass phase and the multi-layer structure.
Article
Materials Science, Multidisciplinary
Pengju Tang, Chenglong Hu, Shengyang Pang, Yan Jiang, Bin Liang, Lei Wang, Sufang Tang
Summary: We have developed a aHfSi(2)-ZrSi2 modified SiC/ZrB2-SiC/SiC triple-layer coating with excellent interfacial bonding strength and cyclic ablation resistance. This is achieved through an improved slurry method and chemical vapor deposition on C-f/SiC composites.
Article
Materials Science, Multidisciplinary
Bo-Wen Chen, De-Wei Ni, Jun Lu, Fei-Yan Cai, Xue-Gang Zou, Chun-Jing Liao, Hong-Da Wang, Shao-Ming Dong
Summary: The research shows that the La2O3 modification affects the long-term and cyclic ablation behavior of Cf/ZrB2-SiC composites. The formation of a ZrO2-La2O3-SiO2 liquid phase layer at 2500 degrees C reduces mass recession rates, but with poor structural stability and weakening of ZrO2 pinning effect by La2O3. This leads to increased linear recession rates with higher La2O3 content during cyclic ablation.
Article
Materials Science, Multidisciplinary
Lei Zhou, Qiangang Fu, Dou Hu, Jiaping Zhang, Yalong Wei, Jian Zhu, Jingyuan Song, Mingde Tong
Summary: The dense double layer ZrB2-SiC-Si/SiC-Si coating effectively protects the C/C substrate from oxidation, attributed to the high content of ZrB2 and the mechanism of inhibiting the evaporation of silicate glass.
Article
Materials Science, Multidisciplinary
Kai Tong, Mingyu Zhang, Zhean Su, Xiaowei Wu, Chen Zeng, Xiangmin Xie, Cunqian Fang, Cheng Yang, Qizhong Huang, Dong Huang
Summary: The Zr-Ta-B-SiC multiphase coating prepared on carbon/carbon composites exhibited excellent ablation resistance at high temperatures, with the key antiablative component being the (Zr,Ta)B-2 solid solution. The micromorphology and distribution of Zr-Ta-O in the coating played a vital role in protective layer evolution and ablation performance, with a coating containing around 30% Ta beneficial for stabilizing the t-ZrO2 phase and alleviating volume change. The formation of a thermal barrier and low volatility of the Zr-Ta-O layer were responsible for the coating's outstanding ablation resistance.
Article
Materials Science, Multidisciplinary
Lei Zhou, Jiaping Zhang, Dou Hu, Qiangang Fu, Jian Zhu, Jingyuan Song, Wuqing Ding, Jiaqi Hou, Mingde Tong
Summary: The study investigated the oxidation and ablation behaviors of HfB2-SiC-Si/SiC-Si coatings under high temperatures, showing that the coatings exhibited good anti-ablation properties at 1800 degrees Celsius. Despite the severe corrosion at the nose tip, the protective layer composed of HfO2 and Hf-Si-O glass in the coating could withstand the scouring of the oxyacetylene torch.
Article
Materials Science, Multidisciplinary
Jian Zhang, Yulei Zhang, Yanqin Fu, Yutai Zhang, Xiaofei Zhu
Summary: The HfC coatings deposited on the two substrates inherit their own substrate surface characteristics, with the HfC coating prepared on CVD-SiC coating showing better ablation resistance after ablation for 90 s under an oxyacetylene flame with heat flux of 2.4 MW/m(2), thanks to the transition layer effectively relieving thermal stress-induced damage.
Article
Materials Science, Multidisciplinary
Han-Hui Wang, Jing-An Kong, Min Xu, Peng-Fei Zhang, Li Yang, Xiao-Hong Shi, He-Jun Li
Summary: The SiO2-Nd2O3/Si-SiC-MoSi2 coating was proposed to repair damaged SiC coated C/C composites by laser cladding. Results showed that the coating effectively improved the laser ablation resistance of the specimens by reducing the maximum temperature and promoting the growth of ablative products.
