Journal of Materials Research and Technology-JMR&T
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2026
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IF 7.3
Yuzhu Shen,Wei Sun,Yueheng Zhang,Xiang Xiong,Hongbo Zhang,Ziwei Wang
Ultra-high-temperature ceramic-modified C/C composites are vital for hypersonic vehicles, but their repeated service capability is hindered by oxide-scale degradation during cyclic ablation. This study evaluates the reusability of C/C-ZrC-SiC composites via cyclic oxy-acetylene ablation tests. Three Y-modification configurations were investigated: coating-only, matrix-only, and dual-integration. Results indicate that the dual-modified composite exhibited optimal resistance after three 60 s ablation cycles at ∼2600°C, achieving a linear ablation rate of −0.015 μm/s and a mass ablation rate of −0.016 mg/s (a 108% improvement over the reference). Mechanistically, the YSi 2 -modified coating rapidly formed a viscous Y 2 Si 2 O 7 -containing oxide layer during the initial stage to seal surface defects. In subsequent cycles, YF 3 in the matrix continuously replenishes the damaged scale with Y-containing species, promoting the formation of stable Zr 0 . 82 Y 0 . 18 O 1 . 91 and suppressing the martensitic transformation of ZrO 2 . This internal-external synergistic self-healing mechanism substantially enhances the reusability and long-term reliability of aerospace thermal structural components.
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高影响因子
FUEL
·
2026
·
IF 7.8
Yu Shi,Fagen Wang
Dry reforming of methane (DRM) offers a sustainable approach for converting greenhouse gases (CH 4 and CO 2 ) into syngas. In this study, we demonstrated the superior efficacy of microwave-assisted DRM over Ni/SiC catalysts calcined at different temperatures. The strong microwave absorption capability of Ni/SiC facilitated rapid catalyst heating, while microwave irradiation lowered the activation energy of DRM, significantly enhancing the conversions of CH 4 and CO 2 . The optimized 3Ni/SiC-923 K catalyst achieved CH 4 and CO 2 conversions of 67.2% and 81.0%, respectively, at 923 K under microwave-assisted DRM, significantly outperforming the respective conversions of 37.4% and 57.1% in conventional thermal DRM. Comprehensive characterizations via BET, XRD, H 2 -TPR, XPS, and microwave absorption analysis elucidate the structure-performance relationship. This work not only presents highly efficient Ni/SiC catalysts for microwave catalytic DRM but also highlights the importance of calcination temperature in adjusting DRM performance.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xiaozheng Lu,Jungui Zhang,Xinxin Cao,Junbin Lu,Jingde Zhang,Guifang Han,Jianhui Jiang
The high UV absorption of SiC and its large refractive index difference with photosensitive resin hinder fabrication via photopolymerization additive manufacturing. In this study, SiC powders were oxidized to form a SiC@SiO 2 core-shell structure, and two types of photoinitiators were combined to enhance the curing behavior of SiC slurries. Moreover, introducing polysiloxane into the resin further improved the curing ability and solid content. For fine SiC powders, slurries with up to 70 wt% solid content were successfully fabricated, achieving a curing thickness of 63 μm at 8 s exposure. Printed green bodies were pyrolyzed at 1100 °C, and SiC nanowires were in-situ formed. The resulting SiC@SiO 2 /SiOC ceramics exhibited a flexural strength of 157.8 MPa and an open porosity of 5.1%, among the highest reported values. The proposed methodology paves the way for the cost-effective production of high-performance SiC-based and other advanced non-oxide high-temperature ceramic components with high light absorption.
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高影响因子
Small
·
2025
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IF 12.1
Bocong Zou,Hulin Wang,Runchao Dong,Jia Zhang,Zhiheng Liu,Yan Lin,Zhicheng Zhu,Xiangyang Hu,Weijun Li,Dongdong Zhang,Xiaoxiao Li,Lin Wang,Huan He,Weiyou Yang,Fengmei Gao,Shanliang Chen
The precise control of the surface properties of low-dimensional nanostructures is a prerequisite for preserving the intrinsic material quality and manipulating the carrier transport behavior to enhance optoelectronic device performance. Herein, a high-responsivity photoelectrochemical (PEC) ultraviolet (UV) photodetector (PD) based on SiC/TiO 2 heterojunction nanowires is developed. The surface of SiC nanowires is decorated with high-quality TiO 2 nanoparticles through a simple hydrothermal process, and a type-II heterojunction is established. The fabricated SiC/TiO 2 heterojunction nanowire PEC PD exhibited excellent photoresponsivity with high responsivity (50.97 mA W −1 ), detectivity (1.07 × 10 12 Jones), and external quantum efficiency (16.85%) under 375 nm ultraviolet illumination. Response and decay times are as low as 0.3 and 0.1 ms, respectively—these values are within the state-of-the-art range for semiconductor nanostructure–based PEC PDs reported thus far. The device also exhibits excellent photoresponsivity and long-term stability under different light intensities, even in harsh universal-pH liquid environments, including acidic, neutral, and alkaline solutions with different concentrations. The elevated photodetection performance of the device is primarily attributed to the effective synergistic effect of the formation of a type-II charge transfer pathway in the SiC/TiO 2 heterostructure, the optimal load capacity of TiO 2 nanoparticles, and the excellent inherent corrosion resistance of SiC and TiO 2 .
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
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IF 9
Zhixin Wu,Zhiguo Yang,Shihao Zhang,Tingting Mi,Xiao Wei,Guangru Zhang,Yibin Wei
Membrane emulsification has garnered increasing attention in various applications, attributed to its low energy consumption and precise droplet size control. However, current research on membrane emulsification rarely focuses on the microstructure of membrane pore channels, nor does it systematically clarify the correlation between such microstructural characteristics and emulsification performance. This study successfully prepared hydrophilic/hydrophobic (HL/HB) tubular SiC ceramic membranes with hierarchical micro-nano pore structures and different wettability via the combination of sol-gel, hydrothermal synthesis and silane polymerization grafting methods. After the in-situ uniform growth of ZnO nanoclusters onto SiC grains, the average pore size of the HL-SiC membrane decreased from 0.50 μm (the HL-SiC membrane) to 0.35 μm (the HL-ZnO@SiC membrane), and the surface roughness significantly increased to 556.0 nm. Silane grafting endowed the HB-ZnO@SiC membrane with superhydrophobicity, achieving a water contact angle of 160.88°. Systematic evaluation of key operational parameters revealed that, at a dispersed phase flow rate of 20 mL/min and a continuous phase flow rate of 1200 mL/min, the average droplet sizes for oil-in-water (prepared by the HL-ZnO@SiC membrane) and water-in-oil (prepared by the HB-ZnO@SiC membrane) emulsions were 0.98 and 0.90 μm, respectively, with Span values as low as 0.36 and 0.29. Notably, the membranes maintained stable emulsification performance even under high dispersed phase concentration (30 % v /v) and low emulsifier content (0.25 % w / v , Tween 80 and Span 80). This work offers a reliable strategy of micro-nano hierarchical pore engineering for enhancing membrane emulsification.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Shoufeng Xue,Huixiang Wang,Yingfen Wang,Hengliang Liang,Wanxi Li,Baoliang lv
With the increasing demands for high-temperature resistance and superior electromagnetic wave absorption in complex environments, developing effective low-frequency (2–8 GHz) absorbers remains challenging, especially for magnetic composites with high magnetic content and dispersibility. This study proposes a hummingbird acoustic resonance mixing (HAM) strategy to fabricate FeSi@SiC composites. Compositing soft magnetic FeSi with high-surface-area nano-SiC enhances electromagnetic loss and improves the high-temperature stability of the composite material due to the partial protection of FeSi by SiC. The optimized composite achieves a minimum reflection loss of −35.9 dB and a qualified absorption efficiency of 3.9 GHz at only 3 mm thickness, along with maintained structural integrity at 800 °C. Enhanced low-frequency absorption is revealed to stem from a large-small size magnetic-dielectric structure, a high density of confined magnetic units and strong magnetic coupling, which collectively promote magnetic loss. This work introduces a new approach to designing low-frequency electromagnetic wave absorbers with high-temperature oxidation resistance by precisely tuning their dielectric and magnetic constituents, and elucidates the underlying low-frequency magnetic attenuation mechanism along with its potential applications.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Mingyuan Yan,Xudong Cheng,Long Shi,Yuelei Pan,Pan He,Zhongxin Zhang,Zhiyi Lun,Yangyang Fu,Heping Zhang
Silicon carbide (SiC) aerogels with high porosity and excellent thermal stability are a promising thermal insulation and adsorption material. However, the poor mechanical properties of SiC aerogels greatly limit its practical application. Herein, inspired by flexible palm bark, for the first time, we report a novel method called “bioinspired link assembly” (BLA) to fabricate bioinspired SiC aerogels (BSA) with significant layered structure. The layered structure and elastic links are in situ constructed in bioinspired link assembly process. The BLA method optimizes structure of the BSA by regulate monolayer dimensions. Owing to the elastic links between the layered structures, the BSA can be bent 180°. Moreover, the BSA shows super-elasticity (elastic deformation up to 70 %) and fatigue resistance (100000 compressions). Benefiting from layered structure, the BSA exhibits an ultralow thermal conductivity (0.027 W m −1 K −1 ). In addition, BSA shows excellent absorption capacities (weight gain about 44 ∼ 72 times) for organic solvents. Therefore, the excellent comprehensive properties make BSA have broad application prospects in the fields of high temperature thermal insulation and oil pollution treatment.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Wei Dang,Linna Zhao,Fuping Li,Chenxi Li,Zhuoli Xu,Xinyuan Zhang,Kang Zhao,Yufei Tang
C/SiC aerogels with both ultra-low thermal conductivity and extremely high strength were fabricated by freeze casting. SiC junctions originated from pyrolysis of polycarbosilane (PCS) were formed between carbon nanofibers (C f ) to enhance the strength of aerogels. The effects of PCS content and total solid content on the phase composition, pore structure , thermal conductivity and compressive property were studied. The fabricated aerogels possess hierarchical pore structure. In the micro-scale, it contains circular pores with size of about 15 µm, while it is mesoporous and macroporous in the nano-scale. Both thermal conductivity and compressive strength increase with the increase in PCS content. Through tailoring PCS content and total solid content, C f /SiC aerogels with porosity of 99.5%, thermal conductivity of 33 mW·m −1 ·K −1 and compressive strength of 7.14 MPa can be obtained. The specific strength of the fabricated C f /SiC aerogels is up to 467.6 MPa/(g/cm 3 ), which is the highest value for ceramic aerogels.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Jun Lu,Dewei Ni,Bowen Chen,Feiyan Cai,Zou Xuegang,Xiangyu Zhang,Yusheng Ding,Shaoming Dong
Pitch-based short carbon fibres reinforced C sf /ZrB 2 -SiC composites were fabricated by direct ink writing of short carbon fibres, followed by slurry impregnation and reactive melt infiltration . Ablation behaviour of the C sf /ZrB 2 -SiC composite was studied by air plasma test. It is indicated that the skeleton of the oriented short carbon fibres provides heat diffusion channels. Consequently, temperatures at the ablation surface are as low as ∼1730 o C and ∼2000 o C respectively at 4 MW/m 2 and 5 MW/m 2 . The composite presents outstanding ablation-resistant performance with a linear recession rate of ∼ − 0.04 µm/s and mass recession rate of ∼ − 3.40 mg/s at 4 MW/m 2 , ∼ − 0.17 µm/s and ∼ 3.58 mg/s at 5 MW/m 2 . It is revealed that the fibres area and matrix area of the composite present different ablation mechanisms. The fibres area is ablated severely, while the matrix area presents excellent ablation-resistance with continuous ZrO 2 -SiO 2 protective layer.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 7
·3025-3037
·
IF 4.5
Zhang Kai,Sun Yinjie,Hou Sifan,Li Guoqi,Fan Jinpeng
Multi-scale BN/SiC ceramic with high toughness was successfully prepared by vacuum-assisted filtration. The BN/SiC ceramic bulk is composed of macroscopic laminated structure and microscopic brick–mortar structures in layer. In this ceramic, improving toughness relies on the design of multi-scale structure. The ordered arrangement of BN sheets and SiC form a ceramic layer with a structure similar to brick and mortar. At the same time, the SiC layer and BN/SiC layer are alternately arranged by layer-by-layer deposition method to form the macro-layer structure. The thickness of SiC layer and BN/SiC layer is only about 74 μm and 7.6 μm, respectively. The mode of crack propagation changed with the change in the structure and variation of BN content in the BN/SiC layer. The delamination cracks occurred inside the BN/SiC layer or at the interface between SiC and BN/SiC layers. The BN/SiC laminated ceramic possesses high toughness (9.37 MPa m 1/2 ) when the BN content is 20wt.%, which is much higher than that of pure SiC bulk (3.45 MPa·m 1/2 ).
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高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Xin Wang,Tao Yang,Xinmei Hou,Yapeng Zheng,Enhui Wang,Zhengtao Du,Sheng Cao,Hailong Wang
Silicon carbide nanowires (SiC NWs) were successfully synthesized using graphene and Si powder as raw materials in NaCl–NaF at 1300–1400 °C for 6 h. The synthesized SiC NWs have two crystal phases due to the presence of molten salt, which formed the 2H/3C–SiC heterojunction structure. The possible synthesis mechanism of SiC NWs is “dissolution-diffusion-reaction”. Besides, photoluminescence (PL) spectra of 2H/3C–SiC heterojunction NWs show that the main emission peak has a significant blue shift, locating in 350–600 nm. The main reason is caused by the defects of 2H/3C–SiC heterojunction structure and the spontaneous polarization of 2H–SiC nano segments.
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高影响因子
Advanced Science
·
2022
·Vol. 9
·期 7
·2103592
·
IF 17.521
Xiaonan Zhou,Songsong Xu,Zhongyu Wang,Liucheng Hao,Zhongqi Shi,Junping Zhao,Qiaogen Zhang,Kozo Ishizaki,Bo Wang,Jianfeng Yang
Construction of a vertically aligned and densely interconnected ordered 3D filler framework in a polymer matrix is a challenge to attain significant thermal conductivity (TC) enhancement efficiency. Fortunately, many biomaterials with unique microstructures can be found in nature. With inspiration from wood, artificial composites can be rationally designed to achieve desired properties. Herein, the authors report a facile and effective approach to fabricate anisotropic polymer composites by biotemplate ceramization technology and subsequent vacuum impregnation of epoxy resin. The hierarchical microstructure of wood is perfectly replicated in the cellular biomass derived SiC (bioSiC) framework by carbothermal reduction. Owing to the anisotropic architecture of bioSiC, the epoxy composite with vertically aligned dense SiC microchannels shows interesting properties, including a high TC (10.27 W m −1 K −1 ), a significant enhancement efficiency (259 per 1 vol% loading), an outstanding anisotropic TC ratio (5.77), an extremely low coefficient of linear thermal expansion (12.23 ppm K −1 ), a high flexural strength (222 MPa), and an excellent flame resistance. These results demonstrate that this approach is expected to open a new avenue for design and preparation of high performance thermal management materials to address the heat dissipation of modern electronics.
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高影响因子
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