COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2025
·
IF 8.9
Zhengying Tu,Zuoxiang Xie,Qinhua Zhou,Jing He,Yuyang Dong,Chengzhe Huang,Fei Zhang,Qingbin Zheng,Yinhang Zhang
The escalating density of electronic devices underscores the imperative for efficacious thermal management strategies. Graphene (GNPs)-based composite films, renowned for their exceptional thermal conductivity, have emerged as a focal point in addressing the heat dissipation conundrum within integrated circuits. This study introduces an innovative approach to fabricating SiC/graphene/polyimide (PI) composite films, employing a one-step in-situ polymerization process in conjunction with a high-pressure orientation technique. The resultant films are engineered to augment thermal conductivity in both in-plane and through-plane orientations, thereby surmounting the intrinsic shortcomings of traditional graphene-based materials that suffer from suboptimal out-of-plane thermal characteristics. The incorporation of silicon carbide (SiC) particles catalyzes the alignment of graphene within the PI matrix, thereby constructing an efficacious thermal transport network. The composite films exhibit markedly enhanced thermal conductivity (In-plane thermal conductivity is 16.6, and out-of-plane thermal conductivity is 3.11) , electrothermal performance (Under a voltage of 3.9 V, the thin film reaches a high temperature of 338 °C) , and electromagnetic shielding efficacy (35 dB) . In the realm of battery applications, these films facilitate efficient heat dissipation and pre-heating, consequently bolstering battery capacity. Moreover, the utilization of environmentally benign materials and a solvent-free fabrication methodology renders these films ideally suited for electronic device applications that demand robust heat dissipation and unwavering reliability.
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Ruoyu Chen,Jianguo Chen,Jiaxuan Xin,Gang Qi,Can Cheng,Minghui Li,Saisai Li,Aiqin Mao
In this study, (TiNbTaV)C-SiC composite powders were synthesized via a molten salt method and subsequently consolidated using spark plasma sintering to fabricate (TiNbTaV)C-SiC ceramics. The synthesized composite powders exhibited fine particle sizes (D50–1.19 μm) and high phase purity, consisting predominantly of high-entropy carbide and silicon carbide. The effects of the synthesized powders and sintering temperature on the phase composition, microstructure, physical properties, and high-temperature stability of the ceramics were systematically investigated. Results indicate that silicon carbide is uniformly dispersed within the high-entropy carbide matrix. Compared to ceramics made with commercial SiC powders, those prepared using molten salt-synthesized powders exhibited significantly enhanced density, flexural strength, fracture toughness, and hardness. However, the high-temperature oxidation resistance was reduced. Furthermore, increasing the sintering temperature from 1700 °C to 1900 °C led to a grain size increase in the high-entropy carbide phase from 3.46 to 4.72 μm. Concurrently, the relative density, flexural strength, fracture toughness, and hardness improved from 97.8 % to 98.5 %, 310.6 MPa–429.0 MPa, 3.2 MPa m 1/2 to 4.5 MPa m 1/2 , and 19.8 GPa–22.2 GPa, respectively.
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DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2024
·
IF 12.7
Wenyan Huang,Jiahao Liang,Kaiqi Chen,Ying Yu,Yeqi Zhu,Junhui Li,Cheng Pan,Yipeng Guo,Siqi Lan,Rongqian Yao
With ongoing development of rocket combustion and hypersonic vehicles, urgent needs are created on thermal structures, protection and thermal insulating materials, particularly balanced enhancement of mechanical and antioxidant properties. Herein, we propose a design strategy to construct continuous in-situ formed SiOC nanowires (SiOCnws)-toughened self-healing SiO x coatings into porous SiC(rGO) PDCs. The key production technique is re-pyrolyzing coassembled flexible precursors/SiC(rGO) p /graphite blends, followed by decarbonization and silica sol impregnation-sintering (SIS) process. Well-distributed hierarchical pores are built to heighten thermal insulation properties by the integrated decarburization of graphite coupled with free carbon. High-yield SiOCnws, with high surface activity, are first cultivated via graphite-assisted vapor-solid (VS) mechanism without transition metal catalysts. They interconnect to form intricate 3D meshwork by graphite-assisted melt-spinning and have good compatibility with ceramic matrix and SiO x coatings by carbothermal reaction. Hierarchically porous SiOCnws/SiC(rGO) 40 % PDCs after once SIS exhibit favorable thermal conductivity of 0.27 W‧m −1 ‧K −1 and exceptional high robustness (compressive strength: 39.02 MPa, hardness: 10.27 GPa). Such composites display low reflection loss of −48.14 dB at 11.22 GHz and even good structural stability at about 1300 °C as burned by a butane blowtorch for 3600 s, shedding light on competitive components for uses in thermal protection fields.
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DOI
高影响因子
Small
·
2025
·
IF 12.1
Yan Shen,Tianxie Chen,Tianyue Yang,Yangzhong Zhao,Zhenxing Wang,Wei Liao,Zhongqian Zhao,Xue Zhou,Qianji Chen,Jian Jiao,Tao Chen,Jincui Gu,Yanzi Gou
Advanced thermal insulation materials that exhibit exceptional high-temperature stability, ultralight characteristics, and recoverable compressibility under extreme conditions are in increasing demand. Emerging ceramic fibrous aerogels are promising next-generation materials. However, traditional ceramic aerogels exhibit high thermal conductivity and inadequate thermal stability, resulting in catastrophic structural failure at temperatures above 1500 °C. Herein, a novel core–shell SiC@C fibrous aerogel with a 3D interlocked lamellar structure is fabricated by optimizing centrifugal spinning parameters, followed by high-temperature sintering. This ultralight aerogel with a density of 20.5 mg cm −3 exhibits good flexibility and processability. In addition, the aerogel demonstrates remarkable stability after being treated at 2100 °C for 1 h in argon, or at 1600 °C for 1 h in air, showing unchanged 3D architectures and good compression resilience. The synergistic infrared shading effects of the carbon shell and SiC core endowed this aerogel with record-breaking thermal-insulation performance, achieving an ultralow thermal conductivity of 82.3 mW (m K) −1 at 1000 °C, lower than most ceramic fibrous aerogels reported to date. These exceptional thermomechanical and thermal-insulation properties make fibrous aerogels prime candidates for providing robust thermal protection under extreme conditions.
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 11
·14746-14754
·
IF 5.6
Boyu Chen,Lijuan Niu,Jianlong Chai,Zhiyuan Bai,Jiayin Zhang,Di Liu,Xuefeng Lu,Yabin Zhu
β-SiC ceramics were prepared by spark plasma sintering at 2200 °C with Y 2 O 3 , MgO , and CeO 2 as sintering additives. Al 2 O 3 was doped based on the above oxides to form a two-component sintering additive to carry out a comparative analysis. The effects of these additives on the microstructure, bulk density, and Vickers hardness of β-SiC were systematically studied. The mechanical properties of the single-component samples were superior to those of the two-component samples. Notably, the single-component sample with Y 2 O 3 , addition exhibited the highest density (98.69 %) and hardness (27.1 GPa), which can be attributed to the appropriate growth of the grains in the single-component sample with Y 2 O 3 . Additionally, the principle of lattice reduction in SiC ceramics was explored using first-principle calculations, further highlighting the advantage of Y 2 O 3 as a single additive for the high-temperature sintering of SiC ceramics.
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产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·Vol. 46
·期 6
·118062
·
IF 6.2
Shaobo Yang,Chun Guo,Yuan Wang,Jiali Li,Yujie Chen,Sijie Kou,Juanli Deng,Bo Chen,Shangwu Fan
A glass-ceramic derived from a high-yttrium aluminosilicate (HYAS) composition was developed for joining silicon carbide fiber-reinforced silicon carbide (SiC f /SiC) composites. The as-prepared powder exhibited a high softening point (∼1396 °C), good wettability, and a thermal expansion coefficient (3.79 × 10 −6 /K) well matched to that of SiC f /SiC. Dense joints were fabricated at 1420 °C for 60 min, achieving an average lap shear strength of ∼54 ± 2 MPa. The joining mechanism involved crystallization-assisted sintering, liquid-phase densification, and atomic-scale interdiffusion without interfacial reaction layer formation. Hydrothermal corrosion was evaluated in water containing ∼8 ppm dissolved oxygen, approximately three orders of magnitude higher than typical pressurized water reactor (PWR) conditions, to simulate long-term degradation. After 15 days, the joints retained a lap hear strength of ∼37 ± 2 MPa, with corrosion confined to the residual glass phase while interfacial integrity remained intact, demonstrating the promising durability of HYAS glass-ceramic as a durable sealant for SiC f /SiC composites under accelerated hydrothermal conditions.
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DOI
高影响因子
International Journal of Ceramic Engineering and Science
·
2020
·Vol. 2
·期 2
·101-109
·
IF 0
Anzhe Wang,Hailong Liao,Tao Zhang,Minqi Jiang,Fuxiao Guo,Yongzheng Wang
Reliable evaluation of the thermal shock behavior of sharp leading edges (SLEs) was hampered by a lack of available experimental method in past decades. Herein, a novel water spraying method was utilized to investigate the shape effect of ZrB 2 -SiC-Graphite SLEs during thermal shock. Experimental results indicated that the critical failure temperature of ZrB 2 -SiC-Graphite SLEs was most sensitive to the wedge angle, which could lead to a dramatic attenuation by about 35% from 12° to 9°, and was relatively little affected by the tip radius of curvature and the thickness. Simulation results further revealed that the decay of critical failure temperature was mainly due to the significant stress concentration caused by the reduction of wedge angle. Scanning electron microscopy observation proved that cracks tend to bypass graphite flakes due to their weak interfacial bonding, while branching always occurred when encountering hard phases or inclusions.
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DOI
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Zhenghe Zhang,Lisheng Cheng,Peter Kroll,Jing Tan,Weimin Yang
Waste corrugated boards reformed by wood fiber are good precursor to be carbonized into multihole carbon materials for high-value utilization. Herein, waste corrugated board was recycled to fabricate functional carbon-silicon composite by the heat treatment under 1100 °C. The SiC nf and SiC nano-sphere were self-assembled during the carbothermal reduction to construct the nano-porous structure. The carbon coating on SiC can enhance the interfacial polarization effect. Owing to this gradient structure, the as-prepared carbon-silicon carbide composite exhibited a well electromagnetic interference shielding effectiveness (EMI SE) of ∼49.46 dB in the X-band. Moreover, its absolute EMI SE is observed to be ∼1561.51 dB∙cm 2 ∙g −1 , which reveals excellent EMI shielding performance combined with light weight. This good overall performance, along with environmentally friendly, ease of mass production, pave way for the large-scale practical applications in EMI shielding.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Bachirou Guene Lougou,Boxi Geng,Boshu Jiang,Hao Zhang,Qiming Sun,Yong Shuai,Zhibin Qu,Jiupeng Zhao,Chi-Hwa Wang
CO 2 -splitting and thermochemical energy conversion effectiveness are still challenged by the selectivity of metal/metal oxide-based redox materials and associated chemical reaction constraints. This study proposed an interface/substrate engineering approach for improving CO 2 -splitting and thermochemical energy conversion through CuFe 2 O 4 and Co 3 O 4 two-layer coating SiC. The newly prepared material reactive surface area available for gas–solid reactions is characterized by micro-pores CuFe 2 O 4 alloy easing inter-layer oxygen micro mass exchanges across a highly stable SiC-Co 3 O 4 layer. Through a thermogravimetry analysis, oxidation of the thermally activated oxygen carriers exhibited remarkably CO 2 -splitting capacities with a total CO yield of 1919.33 µmol/g at 1300 °C. The further analysis of the material CO 2 -splitting performance at the reactor scale resulted in 919.04 mL (788.94 µmol/g) of CO yield with an instantaneous CO production rate of 22.52 mL/min and chemical energy density of 223.37 kJ/kg at 1000 °C isothermal redox cycles. The reaction kinetic behavior indicated activation energy of 30.65 kJ/mol, which suggested faster CO 2 activation and oxidation kinetic on SiC-Co 3 O 4 -CuFe 2 O 4 O-deficit surfaces. The underlying mechanism for the remarkable thermochemical performances was analyzed by combining experiment and density functional theory (DFT) calculations. The significance of exploiting the synergy between CuFe 2 O 4 and Co 3 O 4 layers and stoichiometric reaction characteristics provided fundamental insights useful for the theoretical modeling and practical application of the solar thermochemical process.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Ping Hu,Yuan Cheng,Maosong Xie,Yu Yang,Chang Liu,Qiang Qu,Xinghong Zhang,Shanyi Du
The damage mechanism of carbon fiber and fiber-ceramic interface of C f /ZrC-SiC were investigated and revealed. The chemical reactions of C with ZrO 2 and SiO 2 impurities during the sintering resulted in the surface and grain etching of fiber. The ZrC-SiC ceramics diffused into interface to form a strong bonding under high temperature and press, leading to a failure of stress release and guiding the crack propagation direct across fiber. Both consequently impeded the fiber pull-out and bridging. By obvious contrast, the chemical etching of fiber was effectively inhibited utilizing PyC coating as transition layer, and the strong bonding of fiber with ceramic was relieved at the same time replaced by a relatively weak bonding. As a result, the fiber pull-out and fiber bridging were boosted with a longer length more than 50 µm, over 2 times of uncoated composite, accompanied with obvious crack branching and deflection, together resulting in a graceful mechanical feedback with 2.5 times of work of fracture and improved fracture toughness . This work not only revealed the microstructure forms and inherent mechanism on structure damage of carbon fiber, but also offered an effective method of protecting fiber and tailoring the interface bonding, thereby guiding the design of C f /ZrC-SiC with graceful mechanical performance.
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高影响因子
APPLIED COMPOSITE MATERIALS
·
2022
·Vol. 29
·期 6
·2147-2163
·
IF 2.368
Wang Pei,Guo Yonggang,Du Sanming,Jia Yunchao,Zhang Hongbo,Yin Jian
Taking the advantages of porous ceramic (C/C-SiC composite) and transpiration cooling (Copper alloy), C/C-SiC-Cu composite was fabricated to attain a novel anti-ablation material for high temperature structure application of aerospace systems, via chemical vapor deposition and infiltration technologies. The effects of SiC content on microstructure, thermal conductivity, mechanical and ablation properties of C/C-SiC-Cu composite were investigated. As the SiC content increases from 0 vol% to 25.12 vol%, thermal conductivity, flexural strength and ablation resistance are improved by 84.99%, 78.76% and 53.68%, respectively. Thermal conductivity and thermal diffusivity exhibit proportional linear correlation with SiC content. The high SiC content could shorten the yield stage and increase the breaking strength during the flexural fracture process. When the SiC content is 25.12 vol%, the formation continuous and compact anti-ablation (SiO 2 ) layer is formed by oxidizing and melting fluidity processes during oxyacetylene ablation test, and the protective layer covers the ablation surface and slows down the oxidative ablation, which combines with the transpiration cooling effect of copper alloy to further improve ablation resistance of C/C-SiC-Cu composite.
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高影响因子
International Journal of Applied Ceramic Technology
·
2022
·Vol. 19
·期 4
·1956-1969
·
IF 2.328
Wanbo Hou,Wei Qi,Yongqiang Yang,Tao Feng,Mingyu Liang,Mingde Tong,Hejun Li,Hongjiao Lin,Shifeng Wen
The slurry and sol-gel methods were used to introduce SiC nanowires (SiC nws ) into the SiC f /HfC-SiC composites. The microstructures, ablation, and bending behaviors of the SiC nws modified composites prepared by the two methods were compared. The bending strengths of the modified composites obtained by introducing SiC nws by the slurry and sol-gel methods were 224 ± 19 and 154 ± 14 MPa, respectively. The results showed that SiC fibers with chemical corrosion and thermal damage during the sol-gel process decreased the bending strength of the SiC nws -modified SiC f /HfC-SiC composites. Meanwhile, the pyrolytic carbon interface accompanying corrosion damage in the sol-gel process led to the degradation of interface function, which hindered the interface debonding and fiber sliding of the composites during the bending test. After ablation, the bending strengths of the two composites were 188 ± 19 and 50 ± 7 MPa, respectively. The bending strength retention of the modified composites fabricated by the slurry method (83.9%) was higher than that (32.5%) of the composites fabricated by the sol-gel method after ablation. As the composites fabricated by the slurry method exhibited a good ablation resistance under the oxyacetylene flame (∼2350°C).
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高影响因子
危险品化学品经营许可证（带存储）