Article
Materials Science, Ceramics
Xiaoyang Jiao, Qinchuan He, Jie Feng, Qing Tan, Yiqun Wang, Xuemin Yin
Summary: The ablation resistance and mechanism of C/C-SiC-HfC and mullite modified C/C-SiC-HfC composites were investigated. The results showed that the mullite modified composite exhibited improved ablation resistance. The introduction of mullite promoted the formation of HfSiO4, inhibited the consumption of SiO2, and restricted the formation of porous HfO2, resulting in the formation of a stable and dense Hf-Si-Al-O composite oxide layer.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Zhigang Zhao, Kezhi Li, Wei Li
Summary: ZrC-SiC-ZrB2 and ZrC-SiC inhibited carbon/carbon composites wedge shaped components were fabricated by reactive melt infiltration and tested on an oxyacetylene torch at a heat flux of 2.38 MW/m2 for 120 s. Compared with C/C composites, both inhibited composites components exhibited better ablation resistance with tip temperatures reaching about 2500 degrees C. Structural evolution on the surfaces of the inhibited composites components included a porous ZrO2 layer near the tip, layered structure of the outer ZrO2 layer, subsurface ZrO2-SiO2 layer in the intermediate region, and SiO2 layer in the tail.
Article
Chemistry, Physical
Jinhao Jia, Shuxin Bai, Degan Xiong, Qiang Chen, Cong Li, Minqi Gao
Summary: Alloying Al into porous C-f/SiC composite using pressure-infiltration method enhances the bending strength and reduces ablation rates. Transpiration cooling of aluminum alloy and self-sealing protection of ablation products play crucial roles in anti-ablative properties of the composite.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Yuan Cheng, Yang Lyu, Yongshuai Xie, Chi Zhang, Jiaxin Feng, Liancai Xun, Wengzheng Zhang, Wenbo Han, Shanbao Zhou, Ping Hu, Xinghong Zhang, Jiecai Han
Summary: The ablation behavior and mechanism of ZrC-SiC ceramic matrix, carbon fiber, and ceramic-fiber interface layer under 1800 degrees C ablation are investigated in this study. Chemical reactions and oxidative damage models under 1800 degrees C oxidizing airflow are established, revealing the formation of ZrC and SiC causing grain erosion, and the reaction between carbon fiber and SiO2 and O-2 resulting in pit erosion. The construction of a nanocarbon interface around the fiber is found to inhibit microstructure damage. This work provides fundamental understanding and engineering guidance for the anti-ablation and toughening of 3D C-f/ZrC-SiC.
Article
Nanoscience & Nanotechnology
Yonggang Tong, Ziyi Ren, Yongle Hu, Peng Zhang, Xiubing Liang, Yongxiong Chen, Lingwei Yang, Manyu Hua
Summary: By introducing zirconium silicide into the matrix of C/C-SiC composite, the ablation resistance of the composite can be significantly improved. The composite shows improved performance in oxygen-poor environment with a continuous layer of ZrO2 acting as a protective layer, while severe ablation occurs in oxygen-rich environment.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Materials Science, Ceramics
Pei Wang, Fengchun Wei, Hongbo Zhang, Jian Yin, Zhenhua Hao, Jiwei Zhou
Summary: This study fabricated a SiC whiskers reinforced C/C-Cu composite using chemical vapor deposition and infiltration technologies, and investigated its microstructure, mechanical properties, and ablation resistance. The results showed that the C/C-SiCW-Cu composite exhibited significant advantages in terms of compactness, flexural strength, and ablation resistance.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Zhenxiao Tang, Maozhong Yi, Huan Yin, Yuhui Du, Huang Wu, Ke Peng
Summary: A C/C-ZrC-SiC composite with excellent ablation properties was successfully prepared by high-solid-loading slurry impregnation combined with polymer infiltration and pyrolysis. The excellent performance of the composite is attributed to the protection of the matrix by a three-layered oxide scale consisting of ZrO2/SiO2-rich/ZrO2-SiO2.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
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, Ceramics
Chao Wu, Shihui Xie, Mengyong Sun, Xiaobo Liu, Huaguan Li, Sang Xiong, Xu Zhang
Summary: In this study, amorphous nanocarbon particles were added to prepare nanocarbon-reinforced TiB2-SiC-B4C composite ceramics. The phase transformation and microstructural evolution induced by the nanocarbon particles were analyzed. Furthermore, the mechanical properties of the composites were significantly improved due to the optimized fracture mode and reinforcement of the nanocarbon particles.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Shuang Zhao, Jun Chen, Feiyue Yang, Guobing Chen, Lei Zhang, Zichun Yang
Summary: Continuous silicon carbide fiber reinforced silicon carbide matrix composites (SiC/SiC) are promising candidate materials for nuclear applications. SiC ceramics and SiC/SiC composite were prepared using a polymer deriving method and irradiated with a 1.8 MeV electron beam. The microstructural evolution and radioluminescence performance were investigated, and the results showed evident amorphization and low radioluminescence intensity in both SiC ceramics and SiC/SiC composite due to the self-absorption of free carbon in the polymer derived SiC ceramics.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Materials Science, Ceramics
Lingwei Yang, Xueren Xiao, Li Jing, Jun Zhang, Liping Liu, Changhao Zhao, Guolin Wang
Summary: Research shows that SiC fiber reinforced SiC matrix composite undergoes active and passive oxidation in high-temperature and high-pressure plasma environments, leading to severe fiber corrosion. Coating the surface with SiC significantly enhances the ablation resistance of the composite.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Cheng Zhang, Han Li, Jie Chen, Qinglong An, Ming Chen
Summary: SiCf/SiC ceramic matrix composites are widely used in turbine engine aerospace components due to their high temperature resistance, high strength, and lightweight properties. Laser-assisted machining is an effective process to improve the machinability of SiCf/SiC composites. In this study, a single-factor experiment was conducted to understand the microstructure evolution and ablation behaviors of microgrooves processed by pico-second laser. The results showed that different laser parameters had significant impacts on the depth, width, and surface roughness of the machined microgrooves. The microstructure evolution and ablation mechanism were investigated through various analyses. This work provides theoretical and practical guidance for laser-assisted machining of SiCf/SiC composites.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Applied
Yuanyuan Li, Lu Zhang, Yin Yu, Youjun Zhang, Qiming Wang, Xiuxia Cao, Bo Gan, Xianming Zhou, Chuanmin Meng, Hongliang He, Duanwei He
Summary: Micro-grained diamond-SiC composites were prepared by sintering at high temperature and pressure, and plate impact experiments revealed double elastic wave responses within a pressure range of 22-170 GPa. The shock experiments demonstrated that the Hugoniot elastic limit of micro-grained diamond in SiC matrix is as high as 170 GPa, nearly twice that of single crystal diamond.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Jinkang Du, Guoqiang Yu, Yunfa Jia, Zheng Ni, Xiguang Gao, Yingdong Song, Fang Wang
Summary: The ablation characteristics of 2.5D SiC/SiC composites under ultra-high temperatures were studied using an oxy-acetylene torch flame. The results showed that the ablation region could be divided into three regions based on the distribution characteristics of SiO2. The ablation rate decreased linearly with time and the fracture of the fiber underwent three processes: Necking, fracture, and stable retreat.
Article
Materials Science, Multidisciplinary
Yuchen Liu, Zhixun Xia, Likun Ma, Pengnian Yang, Binbin Chen, Yunchao Feng, Yi Zeng, Chaolong Li, Jiarui Zhang, Yifan Duan
Summary: This study focuses on a new ablation test environment encountered in the solid scramjet, characterized by ultra-high temperature, strong oxidation, and supersonic gas-solid two-phase flow. The microstructure and ablation mechanism of C/C-ZrC-SiC composite were investigated in this environment. The results showed that oxidation and thermal-shock caused surface exfoliation, followed by the formation of grooves, humps, and pulled-out fibers. Additionally, particle-induced mechanical denudation and high-temperature oxidation were identified as key factors affecting the ablation process. The findings of this study have significant implications for the development of materials used in solid scramjet applications.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Hong Zhang, Li-An Zhu, Shu-Xin Bai, Yi-Cong Ye
Summary: An iridium/rhenium (Ir/Re) double-layer coating was prepared on carbon/carbon (C/C) composites, and its morphologies, bond strengths, and ablation resistance were studied. The results demonstrate that the rhenium interlayer significantly enhances the bond strength between the iridium coating and C/C substrate, and the Ir/Re coating exhibits excellent ablation resistance throughout the high-temperature ablation process.
Article
Materials Science, Ceramics
Qiang Chen, Fengyuan Zhao, Jinhao Jia, Changjun Zhu, Shuxin Bai, Yicong Ye
Summary: This study simulated the elastic response and residual stress of ceramic matrix composites using a multiscale approach, predicted effective elastic properties, and compared them with experimental values. The developed micromechanical model showed close agreement with experimental data, validating the reliability of the theoretical model.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Wenjian Guo, Jian Hu, Yicong Ye, Shuxin Bai
Summary: The ablation behavior of high-entropy ceramics (HECs) was investigated using an oxyacetylene flame. By adding SiC particles, the densification and hardness of the ceramics can be improved, and crack deflection was observed. After ablation, various compounds were detected on the surface, and HEC-20SiC showed the lowest mass and line ablation rates. SiC formation and the presence of SiO2 contribute to heat dissipation and pore healing, while the HEC phase effectively inhibits the invasion of reactive oxygen species and metal atoms.
CERAMICS INTERNATIONAL
(2022)
Article
Physics, Multidisciplinary
Bin Zhang, Yu Tang, Shun Li, Yicong Ye, Li'an Zhu, Zhouran Zhang, Xiyue Liu, Zhen Wang, Shuxin Bai
Summary: The research investigated the effects of Ti and mixing entropy on the structure and mechanical properties of TixZr2.5-xTa alloys, indicating that the phase transformation depends on the amount of Ti atoms. The addition of Ti led to a gradual decrease in the content of the HCP phase, with Ti2.0Zr0.5Ta exhibiting the best mechanical properties.
Article
Chemistry, Physical
Shun Li, Caimin Huang, Jin Chen, Shuxin Bai, Yu Tang, Xiyue Liu, Yicong Ye, Li'an Zhu, Shiqing Yang
Summary: By forming dispersed Al/MoO3 interfaces, the energy release performance of Al-Ni composites was significantly improved through the co-contribution of intermetallic formation reaction, thermite reaction, and oxidation reaction.
Article
Clinical Neurology
Defang Liu, Rupei Liang, Shuxin Bai, Bo Lan, Guoyong Liu, Debin Wang, Suo Yuan, Wenjie Sun, Guangyu Li
Summary: The study demonstrates that modified electroconvulsive therapy has significant effects on neurometabolites, MRSI signals, and quality of life in patients with refractory obsessive-compulsive disorder. It effectively relieves obsessive-compulsive symptoms, improves overall health scores, and is associated with changes in right brain functional activities.
JOURNAL OF AFFECTIVE DISORDERS
(2022)
Article
Chemistry, Physical
Jinhao Jia, Shuxin Bai, Degan Xiong, Qiang Chen, Cong Li, Minqi Gao
Summary: Alloying Al into porous C-f/SiC composite using pressure-infiltration method enhances the bending strength and reduces ablation rates. Transpiration cooling of aluminum alloy and self-sealing protection of ablation products play crucial roles in anti-ablative properties of the composite.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jingzhi He, Yating Qiao, Ruixin Wang, Yu Tang, Shun Li, Xiyue Liu, Yicong Ye, Li'an Zhu, Zhen Wang, Shuxin Bai
Summary: A VNbMoTaW refractory high entropy alloy was prepared by mechanical alloying and vacuum hot-pressing sintering to investigate the influence of oxygen. Oxygen played a role in forming Ta-rich oxides, which decreased in grain size and dispersed on the BCC solid solution matrix as sintering temperature increased, leading to an increase in yield strength through Orowan strengthening.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Cong Li, Chunman Zheng, Haolong Jiang, Shuxin Bai, Jinhao Jia
Summary: Aqueous zinc-ion batteries are considered promising for the next generation of functional batteries due to their high safety and environmental performance, yet they suffer from poor cycling stability. By synthesizing Ni-PTA-Mn, an organic metal framework porous material, as the cathode, the batteries displayed high discharge specific capacity and capacity retention, attributed mainly to proton conductivity through H-bond networks formed inside the framework backbone.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Cong Li, Chunman Zheng, Haolong Jiang, Shuxin Bai, Jinhao Jia
Summary: Improving discharge-charge reversibility by enhancing structural stability through in situ growth of MOF-derived V2O3 on carbon cloth has demonstrated high capacity retention and cycling stability. The stable cathode structure and oxygen vacancy defects play a crucial role in achieving high discharge specific capacity.
Article
Materials Science, Multidisciplinary
Ruixin Wang, Yu Tang, Zhifeng Lei, Yuanlin Ai, Zhixing Tong, Shun Li, Yicong Ye, Shuxin Bai
Summary: Refractory high-entropy alloys (HEAs) doped with nitrogen show high strength and ductility properties. The optimal performance is achieved with 0.6% nitrogen doping. Isothermal annealing at different temperatures affects the mechanical properties of the alloys, with slight improvements in both strength and ductility observed at 1000°C due to various strengthening mechanisms.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Jing Wang, Junyu Sun, Taotao Guo, Hao Zhang, Min Xie, Junbo Yang, Xinpeng Jiang, Zengyong Chu, Dongqing Liu, Shuxin Bai
Summary: This study introduces a novel passive daytime radiative cooling strategy and fabricates a flexible hierarchically porous complex membrane with excellent spectral selectivity using a innovative spray-phase-separation strategy. The membrane demonstrates efficient cooling capabilities and economic advantages.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Polymer Science
Wenjian Guo, Shuxin Bai, Yicong Ye
Summary: In this study, the abandoned epoxy resin matrix in composite wastes was pyrolyzed into epoxy resin pyrolytic oil (EPO) and analyzed. The results showed that more than half of the epoxy resin matrix was converted into EPO, mainly consisting of phenol and its derivatives. CF reinforced EPOF composites with comparable strength and ablation rates to CF/PF composites were successfully fabricated, thanks to the good process performance of the EPOF prepolymer.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Chemistry, Physical
Jie Wang, Yu Tang, Shun Li, Zhouran Zhang, Yicong Ye, Li'an Zhu, Shuxin Bai
Summary: The microstructure and mechanical properties of 23 Ti-Zr-Nb-V alloys were investigated to determine the effect of mixing entropy on multicomponent alloys and find the mixing entropy threshold for entropy-tailored materials. The V(Nb)-Zr(Ti) pseudo-binary phase diagrams were established to predict the phases of ternary Ti-Zr-V and Zr-Nb-V alloys. The study revealed that the mechanical properties of entropy-tailored alloys are essentially controlled by Delta S-mix.
Article
Energy & Fuels
Junyu Sun, Jing Wang, Taotao Guo, Hua Bao, Shuxin Bai
Summary: Daytime passive radiative cooling (DPRC) is a cooling method without extra energy consumption, which has gained increasing attention in recent years. By combining disordered media with polymeric photonics, the large-scale preparation of DPRC materials can be realized.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
