Article
Materials Science, Ceramics
Tian Tian, Wei Sun, Xiang Xiong, Tien Zhang
Summary: The novel composite reinforcement with horizontal multilayer Spider web like SiC nanowire networks and vertical interconnected Z-pins like SiC rods significantly improves the ablation resistance of C/C-ZrC-SiC composites, attributed to a denser gradient oxide layer generated under the initial sticky net effect from SiCnw networks and subsequent oxide compensation from Z-pins like SiC rods.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Tian Tian, Wei Sun, Xin Qing, Yuhao Chu, Haikun Chen, Yufeng Liu, Xiang Xiong, Hongbo Zhang
Summary: The study found that using different surface structure units of Z-pins can improve the ablation resistance of composites in different ways. In short time periods, rods perpendicular to the short-cut fibre web improved resistance through oxide compensation mechanisms, while in long time periods, rods perpendicular to the laminated layers primarily improved resistance through oxide melting erosion.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Hao-Yang Wu, Ji Zou, Mirva Eriksson, Jing-Jing Liu, Wei-Min Wang, Zheng-Yi Fu
Summary: A novel approach to rapidly densify ceramic matrix composite was developed by combining ceramic and composite processing through spark plasma sintering. The newly formed particles from the conversion of ZrSi2 and resin were preferentially incorporated into the preform layer with randomly oriented fibers, enhancing the overall properties of the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Dou Hu, Qiangang Fu, Mingde Tong, Xiaoxuan Li
Summary: This study investigates the improvement of multiple cyclic ablation performance of ablation resistant coating through the design and fabrication of (ZrC-TaC)/(ZrC-SiC) multilayer coating. The results showed that the linear variation rate of the multilayer coating decreased by 75% compared to the monolayer ZrC-TaC coating, which was attributed to the control of low Ta/Zr ratio to increase the temperature resistance of Zr-Ta-O oxide film and the interfacial crack deflection induced by the ZrC-SiC interface layer.
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
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, 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
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
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, 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
Yuyu Zhang, Jia Sun, Lingxiang Guo, Xuemeng Zhang, Dingcong Cui, Qiangang Fu
Summary: In this study, a plasma-sprayed ZrC coating modified by a polymer-derived SiC/TaC nanocomposite was applied on SiC-coated carbon/carbon composites. The results showed that the SiC/TaC modified coating exhibited improved stability and ablation resistance, as well as the formation of a dense protective layer.
Article
Materials Science, Ceramics
Tian Tian, Wei Sun, Xiang Xiong, Hongbo Zhang, Yuhao Chu
Summary: A novel two-step method was designed to improve the density of Z-pin-like V-C rods, the interfacial bonding strength between heterogeneous rod and ultra-high temperature ceramic based composites, and the ablation resistance of the composites. The results showed that the ablation resistance of the composite was efficiently improved after the infiltration of silicon into the rods.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
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.
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, Multidisciplinary
Zhigang Zhao, Kezhi Li, Gang Kou, Wei Li
Summary: The cyclic and single ablation behavior of C/C-ZrC-SiC and C/C-ZrC composites, prepared by reactive melt infiltration, were investigated. It was found that the increased cyclic ablation numbers aggravated the oxidation of the matrix and the peeling content of oxides. Under the cyclic ablation mode, C/C-ZrC-SiC composites exhibited better resistance to mass loss compared to C/C-ZrC composites. Moreover, at a single ablation duration of 240 s, C/C-ZrC-SiC composites demonstrated desirable ablation resistance due to the formation of an effective heat/oxygen protection layer.
Article
Materials Science, Ceramics
Dan Zhao, Yi Feng, Zhipeng Pi, Fan Zhang
Summary: Phase equilibria in the ZrO2-GdO1.5-TaO2.5 (ZGTO) system were experimentally investigated, and the differences between ZGTO and the existing ZrO2-YO1.5-TaO2.5 (ZYTO) were discussed. The study is useful for thermodynamic assessment of ZGTO and can guide the design of novel thermal barrier coatings materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yutaka Ohya, Wingki Mey Hendra, Chika Takai-Yamashita, Takayuki Ban
Summary: Diffusion couples of rutile and corundum single crystals were prepared and examined to study the solid solution and precipitation of corundum in rutile during cooling. Different precipitation forms of corundum were observed under different cooling conditions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiaming Zhan, Yunfa Guo, Hao Wang
Summary: This study systematically investigates the mechanical behaviors of calcium fluoride in humid environments. The effects of water on the deformation and plastic enhancement of CaF2 under indentation are explored through microindentation experiments, atomic simulations, and Raman spectroscopy measurement.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hangfeng Zhang, Henry Giddens, Theo Graves Saunders, Matteo Palma, Isaac Abrahams, Haixue Yan, Yang Hao
Summary: The relationship between low and high frequency tunabilities in tin substituted barium titanate ceramics was investigated. It was found that there are differences in tunabilities at different frequencies due to the different activities of larger ferroelectric domains and polar nanoclusters.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Kaibiao Xi, Jiacheng Liu, Beibei Song, Huarong Cheng, Yihao Li, Xiaole Yu, Mupeng Zheng, Mankang Zhu, Yudong Hou
Summary: Composite modulation in the superparaelectric state of the BTBZ-CT system is proposed as an effective strategy to achieve both NTCC and excellent energy storage performance in dielectric ceramics. The addition of BZ and CT to BT ferroelectrics can move the SPE state to the normal use temperature zone, resulting in enhanced NTCC characteristics and energy storage performance. Furthermore, intentional precipitation of CT at grain boundaries can refine the grain size, increase the bandgap, and strengthen the local electric field distribution, thereby enhancing the breakdown electric field.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hamed Salimkhani, Lovro Fulanovic, Till Froemling
Summary: The demand for robust multilayer ceramic capacitors with high-temperature and high-power capabilities is increasing rapidly. However, cost-effective production is a challenge. This study investigates the use of Na0.5Bi0.5TiO3-based materials as promising lead-free options. By adding sintering aids, the sintering temperature of Na0.5Bi0.5TiO3-BaTiO3-CaZrO3-BiAlO3 solid solutions was successfully reduced to 975 degrees C, suitable for co-sintering with Cu electrodes without adverse effects on capacitor properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Mingxing Li, Ran Mo, Zeshui Xu, Jie Zhou, Conglin Zhang, Xuefeng Cui, Fang Ye, Laifei Cheng, Ralf Riedel
Summary: Polymer infiltration and pyrolysis is an effective method for preparing ceramic matrix composites. The transformation of polymer to ceramic during the process affects the residual stress and interface behavior in the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yan Kang, Lin Chen, Chang-Jiu Li, Guan-Jun Yang
Summary: A novel abradable seal coating with low hardness and high bonding strength was successfully designed and prepared. This coating has significantly higher abradability and erosion resistance compared to metal-based coatings, and can retain excellent abradability and have a long lifetime during service.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Qingzhong Song, Xiangdong Zha, Ming Gao, Yingche Ma
Summary: This study analyzes the influence of calcia refractory purity on the properties of calcia crucibles. Higher purity calcia results in well-developed grains and improved hydration resistance, leading to better high-temperature strength and thermal shock resistance. In contrast, lower purity calcia crucibles exhibit inferior properties. Therefore, high-purity calcia is considered a potential refractory for manufacturing oxide crucibles.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sehreish Abrar, Faisal Nazeer, Zhuang Ma, Ling Liu, Abdul Malik, Mustafa Kamal, Abdullah G. Al-Sehemi
Summary: To raise the operating temperature of Si-based ceramic matrix composites (CMCs), researchers have applied thermal/environmental barrier coating (T/EBCs) materials, typically rare earth silicates. However, the high thermal conductivity and the mismatch of thermal expansion have been major challenges in developing new materials that can offer thermal insulation and environmental protection to CMCs. In this study, entropy engineering was used to create a multicomponent equi-atomic single-phase pyro silicate with extremely low thermal conductivity and enhanced water vapor corrosion resistance. The research findings show the potential of high entropy disilicates in achieving ultra-low thermal conductivity and low weight loss in corrosive environments.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zi-bo Niu, Daxin Li, Dechang Jia, Zhihua Yang, Kunpeng Lin, Paolo Colombo, Ralf Riedel, Yu Zhou
Summary: In this study, SiBCN ceramics with a special structure were prepared to improve the oxidation resistance. The effect of the structure on oxidation behavior and kinetics was investigated, revealing that the special structure can effectively inhibit heterogeneous oxidation and enhance the oxide layer composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Melike Donmez, Metehan Erdogan, Cihangir Duran
Summary: The limited densification of CeO2 ceramics was improved by using an anorthite-based glass, resulting in high dielectric constant and quality factor with minimum dielectric loss. The CeO2-(anorthite-based) glass ceramic showed promising results in terms of low temperature densification and microwave properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
S. Rahmati, R. G. A. Veiga, J. Mostaghimi, T. Coyle, A. Dolatabadi
Summary: This study provides an atomic-scale description of the high-velocity impact of alpha-Al2O3 particles onto an alpha-Al2O3 substrate during Aerosol Deposition (AD). The results suggest that the crystal orientation plays a crucial role in both plasticity and damage of the nanoparticles. Impact velocity has a direct correlation with plasticity and fragmentation, but adhesion efficiency has only a marginal increase. The crucial element lies in the substrate's surface alterations caused by the fragments left on the substrate after impact.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Bo-Wen Chen, Yan-Mei Kan, De-Wei Ni, Chun-Jing Liao, Hong-Da Wang, Yu-Sheng Ding, Shao-Ming Dong
Summary: This study characterized the long-term and repeated ablation properties of modified Cf/HfC-SiC composites with YB4-Al2O3-Si3N4 under an air plasma torch. The structural stability and viscosity of the oxide layer were found to affect the ablation resistance of the composites. By forming nano c-HfO2 grains and high-viscosity Al-Si-Y-O glassy phase, the structural stability of the oxide layer was improved, resulting in enhanced ablation resistance. However, the oxidation of Si3N4 led to the formation of NO, NO2, and excessive SiO2 glassy phase, which resulted in a porous structure and reduced the viscosity of the oxide layer. Therefore, the addition of Si3N4 decreased the ablation resistance of the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yongxing Wei, Huawei Zhang, Siyuan Dong, Changqing Jin, Chenxing Bai, Junle Dai, Zengzhe Xi, Zhonghua Dai, Zengyun Jian, Li Jin
Summary: In this study, solid solutions of xBi(Ni1/2Hf1/2)O-3-(1 - x)PbTiO3 (xBNH-PT) were synthesized to investigate their phase boundary behaviors and physical properties. The presence of a tetragonal-pseudocubic phase boundary and a spontaneous ferroelectric-relaxor transition at specific compositions were confirmed. The introduction of a tetragonal-pseudocubic phase boundary improved the piezoelectric properties and suppressed the spontaneous ferroelectric-relaxor transition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)