Article
Materials Science, Multidisciplinary
Lianyang Chen, Qiong Deng, He He, Tian Ye, Yihang Li, Hanjun Wei, Chunlin Zhou, Feng Zhao, Qingyuan Wang
Summary: In this study, rGO/ScFeO3 composites were synthesized to improve the microwave absorption performance. The results showed that the addition of ScFeO3 particles significantly enhanced the absorption performance of the composites, and this improvement was attributed to the effective complementarity between ScFeO3 particles and carbon sheet. Furthermore, it was found that the microwave absorption properties of the composites were controlled by the ScFeO3 content.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Ceramics
Xia Fang, Limei Pan, Jie Yao, Shuang Yin, Yang Wang, Quan Li, Jian Yang
Summary: Fully dense SiC/spherical graphite-AlN microwave-attenuating composite ceramics were prepared, where the addition of SiC led to a decrease in electrical conductivity and enhanced polarization relaxation. The absorption performance characteristics of the composites could be significantly tuned by controlling the SiC content, resulting in optimized impedance matching and superior absorption at certain frequencies.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Peitao Xie, Yuan Liu, Mei Feng, Mang Niu, Chunzhao Liu, Nannan Wu, Kunyan Sui, Rahul Rangrao Patil, Duo Pan, Zhanhu Guo, Runhua Fan
Summary: This study prepared Co/C nanocomposites with Co nanoparticles uniformly distributed in amorphous carbon sheets, achieving excellent absorption performance through hierarchical porous microstructures. Excellent absorption performance was achieved at 10% and 15% Co/C content levels, providing a new pathway for designing ultralight absorbers.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Materials Science, Ceramics
Yin Liu, Dongmei Zhu, Gangli Feng, Yuchang Qing, Wancheng Zhou
Summary: By introducing Ni, Ti, or Zr ions to substitute for Mn ions in CaMnO3, the complex permittivity match was enhanced, leading to significant improvements in microwave absorption properties, including a substantial increase in the minimum reflection loss value and expansion of the effective absorption bandwidth.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Yi Liang, Yue Yuan, Bo Wang, Yujiang Wang, Shicheng Wei
Summary: In this study, ZnO with three different morphologies were synthesized using different surfactants, and their properties were characterized using XRD, SEM, TEM, and vector network analysis. ZnO obtained with CTAB as the surfactant showed excellent wave absorption performance within a specific frequency range, indicating potential for electromagnetic absorption applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Haopeng Cai, Chaochao Feng, Hongbo Xiao, Bo Cheng
Summary: A ternary composite containing reduced graphene oxide, flower-like Fe3O4, and PANI was synthesized to exhibit excellent microwave absorption performance. The addition of PANI anticorrosion coating did not significantly affect the final microwave absorption performance, and the rGO content had an impact on the microwave absorbing properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
M. I. Piracha, G. Murtaza, Ghazanfar Nazir, Taharh Zelai, Nuriyah Mohammed Aloufi, M. Hassan, Thamraa Alshahrani, Hisham S. M. Abd-Rabboh
Summary: The study investigates the impact of PEEK on the properties of substituted SrM hexaferrite. Nanocomposites of SrM/PEEK in different ratios were prepared with the micro-emulsion method. Characterization techniques including XRD, SEM, FTIR, and VNA were carried out to analyze the composites. The results showed changes in structure, magnetic nature, and microwave properties of the materials due to the presence of PEEK and ferrite concentration in PEEK.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Hanjun Wei, Chunlin Zhou, Pei Feng, Yaping Yu, Jimei Xue, Feng Zhao, Qingyuan Wang
Summary: This study investigates the improvement of microwave absorption performance through material micromorphological design. The results show that Re-SiC ceramics prepared using PDCs methods, with the addition of rare earth elements (Sc, Y, Ce), exhibit enhanced microstructural, dielectric, and microwave absorption properties. Specifically, the Sc-SiC ceramics with a well-designed three-dimensional network structure demonstrate superior microwave absorption performance.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Multidisciplinary
Xue Zhang, Xue-Lei Tian, Yutian Qin, Jing Qiao, Fei Pan, Na Wu, Changxian Wang, Shanyu Zhao, Wei Liu, Jie Cui, Zhao Qian, Meiting Zhao, Jiurong Liu, Zhihui Zeng
Summary: Metal-organic frameworks (MOFs) show potential in electromagnetic wave (EMW) absorption due to their tailored components, topological structure, and high porosity. In this study, rod-like conductive MOFs (cMOFs) composed of adjustable metal ions and ligands were prepared to achieve tunable dielectric properties for tailored EMW absorption. The influences of composition, charge transport, crystalline structure, and microstructure on dielectric and EMW absorption performance were investigated, advancing the understanding of EMW attenuation mechanisms. The cMOFs exhibited prominent EMW absorption due to enhanced conductive and polarization losses from conjugation effects, terminal groups, and shape anisotropy.
Article
Materials Science, Ceramics
Yin Liu, Dongmei Zhu, Xia Chai, Yuchang Qing, Wancheng Zhou
Summary: Ca1-xSrxMnO3 powders were synthesized via solid-state reaction for microwave absorption applications, with Sr2+ doping significantly enhancing the microwave absorption properties of the material.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
X. Huang, Y. T. Liu, G. S. Luo, C. Lin, X. Wu, X. H. Zheng, D. P. Tang
Summary: BSFN ceramics prepared by microwave sintering showed a single tungsten bronze phase and equiaxial grains, demonstrating enhanced dielectric, ferroelectric, and magnetic properties.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Preeti Kumari, R. K. Gangwar, P. M. Sarun, Devendra Kumar
Summary: The study added barium titanate to MAST glass ceramic to increase the dielectric constant, resulting in improved microwave dielectric properties. The sintered samples showed the formation of cordierite, BaTi5O11 and Ba2Ti9O20 compounds, which play a key role in enhancing the dielectric constant.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Ceramics
Haonan Gong, Shujuan Tan, Jing Zheng, Kangsen Peng, Yanting Zhang, Yunjia Hu, Songhan Duan, Guoyue Xu
Summary: Flake-shaped FeCo/BaFe12O19 composites with remarkable microwave absorption performance were successfully prepared through a two-step process involving ball milling and sol-gel treatment. Flexible control of applicable frequency ranges of the composites is achievable by changing mass fractions of BaFe12O19. The minimum reflection loss can reach -51.22 dB with effective loss of < 10 dB at a BaFe12O19 mass fraction of 20%.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Lu Gao, Ruiduan Zhang, Cuoke Wei, Yichao Yin, Hang Zhang
Summary: The research focused on the dielectric and microwave absorption properties of La0.5Sr0.5CoO3 ceramics at different temperatures, aiming to develop a microwave absorbing material that can be used at 500 degrees C. It was found that the characteristics of the La0.5Sr0.5CoO3 powder remained stable even after sintering, and the La0.5Sr0.5CoO3/Al2O3 ceramic showed good microwave absorption properties in Ku band at 500 degrees C. Additionally, frequency selective surfaces (FSS) were designed to enhance the microwave absorption performance of the La0.5Sr0.5CoO3/Al2O3 ceramic in X band.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Xinlei Wang, Xiaomeng Fan, Minghang Li, Wenjie Zhu, Jimei Xue, Fang Ye, Laifei Cheng
Summary: This study investigates the impact of microstructure of MAX phases on the structures and electromagnetic absorbing properties of MXenes. It demonstrates that manipulating the structures of MAX phases can regulate the electromagnetic absorption performance of MXene.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Yupeng Xie, Ailian Zhu, Min Chen, Keyou Shi, Qiucai Zhang, Guowen Peng, Yong Liu
Summary: Considerable amounts of coal fly ash (CFA) are produced annually without proper utilization. Alkali-activated CFA was introduced to prepare ceramics to treat neodymium-contaminated soil, and its effect on the properties of the ceramics was investigated. The alkali activation of CFA led to a desilication reaction and the generation of new phases rich in sodium, enhancing the mechanical properties of the ceramics. The alkali-activated CFA exhibited higher bulk density and homogeneous distribution of Nd ions in the matrix compared to untreated CFA.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Industrial
Litong Zhang, Yu Guo, Weiwei Qian, Weili Wang, Daoyuan Liu, Sai Liu
Summary: This paper proposes a modelling and online training method for digital twin workshop to address the difficulties in modelling, simulation, and verification. It describes a multi-level digital twin aggregate modelling method and a digital twin organization system. A spatio-temporal data model is constructed based on the data demand for digital twin aggregates. The paper also presents a training method using truncated normal distribution and a verification method based on real-virtual error for digital twin models. The effectiveness of real-time status monitoring, online model training, and production simulation is verified through a case study.
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH
(2023)
Article
Materials Science, Ceramics
Shenghao Li, Fang Ye, Laifei Cheng, Zhaochen Li, Junheng Wang, Jianyong Tu
Summary: In this study, porous silicon carbide ceramics with multilevel directional pores were prepared using chemical vapor infiltration (CVI) combined with sacrificial template method. A carbon fiber preform with a specific structure was used as a template, and silicon carbide was deposited through the CVI process. The carbon fiber template was then oxidized and removed, resulting in the porous silicon carbide ceramics. The influence of deposition time on pore structure, mechanical properties, and thermal properties was investigated. Compared to the traditional pore-making process, the sacrificial template method produces more regular pores, leading to excellent mechanical and thermal insulation properties. The sample deposited for 72 hours exhibited a porosity of 66.00%, a flexural strength of 67.52 MPa, and a thermal conductivity below 1 W/(m center dot K) from room temperature to 1200 degrees C.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Jinsong Yang, Fang Ye, Laifei Cheng
Summary: Nano-porous titanium carbide (TiC) coating was synthesized in-situ on silicon carbide (SiC) fiber substrate using titanium tetrachloride (TiCl4) vapor. The coating consisted of TiC nanograins and the nanopores were formed by lateral stack growth. The composition and morphology of the coating were controlled by the supersaturation of gaseous reagents at the boundary layer. The flexibility of the SiC fiber was preserved by the optimized TiC coating. Lastly, a SiCf/SiC mini-composite with nano-porous TiC interphase was prepared, exhibiting fiber pull-out and interphase fracture on the fracture surface.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Li Yao, Shixiang Zhou, Longkai Pan, Hui Mei, Yang Li, Konstantinos G. Dassios, Paolo Colombo, Laifei Cheng, Litong Zhang
Summary: This study achieves the fabrication of all-ceramic metamaterial microwave blackbodies, demonstrating broadband microwave absorption capability, temperature insensitivity, and structural scalability. It also exhibits additional properties of noise reduction and high wear resistance.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Jimei Xue, Song Hu, Xiaoping Li, Fei Li, Yuqiang Liu, Hanjun Wei
Summary: This study investigates the enhancement of microwave absorption performance in SiCN ceramics by introducing Y2O3. By forming Y2O3-SiCN heterogeneous amorphous interfaces, defects, and dipole polarization, a multiple polarization loss mechanism is achieved, resulting in excellent microwave absorption performance in SiCN-Y2O3 ceramics over a wide thickness range.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Shenquan Yang, Haolin Qin, Chunlin Zhou, Hanjun Wei, Pei Feng, Jimei Xue, Zhijun Wang, Feng Zhao, Qingyuan Wang
Summary: This study successfully grew a multidimensional nanostructure, consisting of matchstick-like SiCnws and carbon nanoclusters, in a porous Yb2Si2O7 ceramic using precursor infiltration and pyrolysis. The increase in precursor infiltrations resulted in a higher content of absorber (SiCnws and carbon) and the formation of a multidimensional nanostructure, leading to increased conductivity loss, interfacial polarization loss, and dipole polarization loss. The YbSiOC ceramics with a 28.2 wt% absorber content achieved a minimum reflection loss of -50.0 dB at 9.39 GHz and an effective absorption bandwidth of 4.2 GHz in the X band. The matchstick-like SiCnws and carbon nanoclusters created a multidimensional network structure that facilitated multiple reflections and scattering of electromagnetic waves in YbSiOC ceramics, making them suitable for applications in water-vapor environments.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Xiangyun Gao, Bao Lei, Yi Zhang, Daxu Zhang, Chong Wei, Laifei Cheng, Litong Zhang, Xuqin Li, Hao Ding
Summary: In this study, CT technology and deep learning methods were used to investigate the microstructural features and damage characteristics of SiC/SiC composites, including accurate identification of features such as fibers, interphase, matrix, and cracks, as well as obtaining key characteristics such as porosity, fiber pull-out length distribution, and crack distribution.
MATERIALS CHARACTERIZATION
(2023)
Review
Engineering, Mechanical
Bai-chao Wang, Cong-zhi Liu, Li-tong Zhang, Da-sen Wang
Summary: This paper presents a new multi-object tracking method that improves tracking performance in cluttered environments through multiple fusions. The method uses Bayesian estimation theory and introduces multiple measurement models to enhance estimation reliability.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Hanjun Wei, Shenquan Yang, Pei Feng, Chunlin Zhou, Jimei Xue, Cunxian Wang, Lianyang Chen, Feng Zhao, Qingyuan Wang
Summary: SiCTi ceramics were prepared by PDCs technology using Ti modified polycarbosilane (PCS), which achieved adjustable dielectric and EM wave absorption properties. The addition of Ti reduced free carbon and induced the growth of SiCnws, resulting in a three-dimensional network structure and multiple loss media. By constructing hetero-interfaces and optimizing the composition, effective EM wave absorption can be achieved in high temperature applications.
MATERIALS CHARACTERIZATION
(2023)
Article
Nuclear Science & Technology
Jie Wang, Qiuyu Sun, Jinshan Gao, Yupeng Xie, Qingyu Si, Xiaoqing Liang, Ji Liu, Dingkang Hu, Pengyu Huang, Sheng Wang, Guoming Liu, Aijun Mi
Summary: Lead is commonly used for X/gamma ray shielding and dosage reduction, but improper recycling can lead to serious hazards. On the other hand, recycling lead from high metal content gamma-ray shielding materials can serve as a secondary metal source and contribute to regulated accumulation and environmental protection. This study focuses on the recovery of lead from waste flexible Vinyl-Methyl-Silicone based gamma-ray shielding materials, with analysis of the effects of pyrolysis temperature and heating rate. Optimum conditions resulted in a lead recovery rate of 57.40 wt% at a pyrolysis temperature of 300°C for 15 minutes, producing a solid product consisting mainly of lead and lead oxides.
PROGRESS IN NUCLEAR ENERGY
(2023)
Article
Computer Science, Interdisciplinary Applications
Weiwei Qian, Yu Guo, Hao Zhang, Shaohua Huang, Litong Zhang, Hailang Zhou, Weiguang Fang, Shanshan Zha
Summary: This article focuses on how to effectively construct DTM synchronous update methods based on dynamic sample data for discrete manufacturing workshop, in order to enhance the accuracy of PP prediction. The proposed model demonstrates good performance in realizing the synchronization of workshop performance in industrial environment, greatly improving the prediction ability for PP.
ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING
(2023)
Article
Chemistry, Physical
Minggang Zhang, Longkai Pan, Zhipeng Jin, Xiao Wang, Hui Mei, Laifei Cheng, Litong Zhang
Summary: Independent photo-charging technologies based on aqueous zinc-ion batteries (ZIBs) show promise for renewable energy systems. However, the conflict between light utilization and electrochemical performance limits the effectiveness of photo-charging ZIBs. This study proposes and applies 3D light-trapping structures (LTSs) in a rigid VO2/C@SiCuOC electrode to improve light-harvesting efficiency. The optimized 3D electrode demonstrates significantly enhanced photo-response current density and higher energy density, making it a practical solution for clean energy harvest/storage systems.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Analytical
Xiaofeng Xu, Laifei Cheng, Xiaojiao Zhao, Jing Wang, Ke Tong, Hua Lv
Summary: The preparation of micro/nano periodic surface structures using femtosecond laser machining technology has been a hot topic in recent years. In this study, the formation and evolution of micro/nano periodic ripples on 2205 stainless steel were investigated. Different types of ripples were generated through single spot irradiation with fixed laser fluences and various pulse numbers. The morphologies of the ripples were analyzed and the underlying mechanisms were discussed. It was found that the presence of nano holes/pits played a crucial role in the formation and evolution of the ripples. Additionally, a new microstructure called the pea pod-like structure was discovered, and it provided a possible explanation for the formation and evolution of the micro/nano periodic ripples.
Article
Chemistry, Physical
Shenquan Yang, Lu Tang, Hanjun Wei, Jimei Xue, Zhijun Wang, Qingyuan Wang, Feng Zhao
Summary: This study proposes a Yb2O3/rGO composite with a volcanic rock-like structure, which exhibits outstanding impedance matching and loss capacity and achieves high EM wave performance.
