Article
Materials Science, Multidisciplinary
V. Vipin Vijay, Lavanya B. Sajeev, S. Anjana, Nisha Balachandran, Chinthalappalli Srinivas, K. P. Vijayalekshmi, K. J. Sreejith, Renjith Devasia
Summary: The synthesis and application of metal modified polycarbosilanes is currently a highly active field. These polymers can be processed into advanced materials such as ceramic fibers, coatings, or ceramics that are stable at high temperatures. However, the exact structures of these polymers are still not fully understood. In this study, copper modified polycarbosilane was successfully synthesized and its structure was proposed as a highly crosslinked string and bead structure. The effect of this polymer on the thermal decomposition of ammonium perchlorate was investigated, showing a decrease in decomposition temperature with the addition of Cu-PCS. The model structure proposed in this study can be viewed as an ideal heterogeneous catalyst system, providing insights for future production of efficient heterogeneous catalysts.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Vanishree S. Bhat, V. A. Raghunathan, Sandeep Kumar
Summary: Steroidal derivatives have been found to be excellent mesogens with the potential to induce a wide variety of liquid crystalline phases, including frustrated phases. Novel monoalkoxy and dialkoxy benzoate derivatives of ergosterol and stigmasterol have been synthesized and studied for their mesomorphic properties, exhibiting various mesophases such as SmA, SmC*, N*, TGB, and blue phases. Some of these derivatives also showed gelation ability with organic solvents and were compared with cholesteryl counterparts.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Polymer Science
Sergey A. Milenin, Elizaveta V. Selezneva, Pavel A. Tikhonov, Viktor G. Vasil'ev, Alexander I. Buzin, Nikolay K. Balabaev, Andrey O. Kurbatov, Maxim V. Petoukhov, Eleonora V. Shtykova, Lev A. Feigin, Elena A. Tatarinova, Elena Yu. Kramarenko, Sergey N. Chvalun, Aziz M. Muzafarov
Summary: Carbosilane dendrimers of different generations were synthesized, with theoretical models and simulations confirming their monodispersity and almost spherical shape. Glass transition temperature was found to be independent of generation, but greatly affected by the chemical nature of terminal groups. The viscoelastic properties of high-generation dendrimers exhibited general trends with increasing generation, determined by the regular branching structure.
Article
Chemistry, Multidisciplinary
S. Vanishree Bhat, K. Swamynathan, V. A. Raghunathan, Sandeep Kumar
Summary: This report illustrates the importance of the oligo-ethyleneoxy side chain on the liquid crystallinity of steroidal mesogens. The ethyleneoxy benzoates of sterols exhibit cholesteric and polymorphic smectic mesophases, as well as frustrated phases such as TGB and blue phase. The mesogenic tendency of these molecules is analyzed based on the length of the ethyleneoxy side chain and the steroidal moiety, and their amphotropic behavior has been investigated using POM, DSC, SAXS, and SEM techniques.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Yew Jin Ong, Sreekumar Pisharath, Yang Feng Anders See, Chor Yong Tay, Huey Hoon Hng
Summary: In this study, a novel hybrid oligomer BANFHOB was developed as an energetic plasticizer for a cast curable fluoropolymer binder. BANFHOB, containing fluoroalkyl and azido moieties, exhibited good plasticizing effects by imparting oxidizing and energy release properties.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Chemistry, Physical
S. Vanishree Bhat, K. Swamynathan, Sandeep Kumar
Summary: Steroidal derivatives are well known for their diverse mesophases, with cholesteryl analogs showing different phases compared to stigmasterol and ergosterol derivatives. The study focuses on the mesogenic behavior of the compounds and the effect of replacing oxygen with sulfur, leading to differences in clearing temperatures.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
E. Vetrivendan, Rongali Hareesh, S. Ningshen
Summary: This study investigates the effects of chemical vapor deposition (pyrolysis) temperature on the properties of pyrolytic graphite (PyG). The results show that higher pyrolysis temperature leads to better density, structure, and preferred orientation of PyG, but also increases the presence of defects.
Article
Chemistry, Physical
Farida H. Aidoudi, Alessandro Sinopoli, Muthumeenal Arunachalam, Belabbes Merzougui, Brahim Aissa
Summary: The synthesis of a novel redox-active ionic liquid (RAIL), namely 1-butyl-3-methylimidazolium hydroquinone sulfonate ((BMIM)(HQS)), was reported. Characterization tests showed that (BMIM)(HQS) possesses high stability and low volatility. The electrochemical behavior of (BMIM)(HQS) was found to be temperature dependent and diffusion controlled.
Article
Chemistry, Multidisciplinary
Reyna Berenice Gonzalez-Gonzalez, Lucy Teresa Gonzalez, Marc Madou, Cesar Leyva-Porras, Sergio Omar Martinez-Chapa, Alberto Mendoza
Summary: In this study, carbon dots were synthesized from activated and non-activated pyrolytic carbon black obtained from waste tires and chemically oxidized with HNO3. The effects on carbon dot properties were analyzed using various characterization techniques. The results showed that carbon dots from activated precursors exhibited different photoluminescence properties compared to those from non-activated precursors. Additionally, a dialysis method was proposed to purify the carbon dots.
Article
Green & Sustainable Science & Technology
Gaffer Ahmed, Nanda Kishore
Summary: Growing concerns over fossil fuel utilization and their impending scarcity have led to a transition towards renewable energy sources. This study focuses on the extraction and characterization of the fuel phase from pyrolysis oil generated from Azadirachta indica biomass. The solvent n-hexane proved to be the superior choice based on various factors such as density, viscosity, calorific value, and selectivity. The extracted fuel phase demonstrated physiochemical comparability to conventional gasoline, showing its potential as a viable alternative to fossil fuels.
Article
Polymer Science
Haifa Masfeer Al-Kahtani, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Ali Robaian, Abdullah Al-Kahtani, Taieb Aouak, Ali Alrahlah
Summary: This study aimed to synthesize a new dimethacrylated-derivative of eugenol (EgGAA) as a potential biomaterial for dental fillings and adhesives. EgGAA was synthesized through a two-step reaction and incorporated into resin composites. The synthesized monomers were analyzed for their structural, spectral, and thermal properties. The viscosity and rheological behavior of EgGAA and the composites were investigated, as well as their DC and mechanical properties.
Article
Biochemistry & Molecular Biology
Yulin Hu, Lili Yang, Xiaobing Liu
Summary: A type of MCM-41 supported dicationic imidazolium ionic liquid nanocatalyst has been synthesized for the efficient synthesis of 2-oxazolidinones through the conversion of CO2 with aziridines. The use of the novel supported ionic liquid catalyst MCM-41@ILLaCl4 in this reaction system offers advantages such as easy workup, high yields, short reaction time, and purification without column chromatography. The protocol shows promise for industrial applications.
Article
Chemistry, Multidisciplinary
Darpan V. Bhuse, Pundlik R. Bhagat
Summary: The study synthesizes a novel dyad, CPDCFBM, as a sensitizer for dye sensitised solar cells, demonstrating its efficient light-harvesting capabilities and high energy conversion efficiency. The dyad shows excellent electronic communication with TiO2 and good stability against aggregation, making it a suitable sensitizer for DSSCs.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Tongtong Zhang, Yaoping Hu, Liyuan Huai, Zhijin Gao, Jian Zhang
Summary: DPhSO is reported as an active and environmentally friendly solvent for synthesizing HMF from fructose, with nearly 100% conversion efficiency. The reaction mechanism of DPhSO-catalyzed HMF formation was analyzed through various experiments and theoretical calculations.
Article
Chemistry, Multidisciplinary
Mohamed E. Osman, Vladimir V. Maximov, Tshepo D. Dipheko, Tatiana F. Sheshko, Alexander G. Cherednichenko, Pavel A. Nikulshin, Victor M. Kogan
Summary: In this study, a series of K-modified CoMoS catalysts supported on different commercial activated carbons were prepared and characterized. The catalytic activities and selectivities of these catalysts for higher alcohol synthesis were investigated. The results showed that the choice of activated carbon support influenced the catalytic performance of the catalysts. This study provides valuable insights for the efficient synthesis of higher alcohols.
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
Chemistry, Physical
Guohong Wang, Jianxi Liu, Xiangcheng Liu, Minghang Li, Jiongjie Liu, Nan Chai, Fang Ye, Jimei Xue, Xiaomeng Fan, Hailong Xu, Xingmin Liu, Laifei Cheng
Summary: This study developed oxidation-resistant vitamin C/Ti3C2TX foam composites as electromagnetic interference shielding materials, which showed improved stability in shielding effectiveness due to the protection provided by vitamin C.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Shixiang Zhou, Li Yao, Tong Zhao, Hui Mei, Konstantinos G. Dassios, Laifei Cheng, Litong Zhang
Summary: Chemiresistive SiOC structures with negative Poisson's ratio were constructed for gas detection under thermal and pressure loading using vat photopolymerization and surface sensitization. The structures, modified with metal-organic framework-derived SnO2 nanocubes, exhibited high selectivity to formaldehyde vapor and showed a fast sensing delay. The structures also had a near-zero expansion behavior at high temperature and demonstrated high load-carrying capacity and low thermal expansion performance.
Article
Chemistry, Physical
Zhipeng Jin, Minggang Zhang, Hui Mei, Hongxia Liu, Longkai Pan, Yuekai Yan, Laifei Cheng, Litong Zhang
Summary: The 3D Janus evaporator designed and prepared using 3D printing technology improves the efficiency of solar evaporation by enhancing light collection and water transfer. It shows great potential in solving the issue of fresh water shortage.
Review
Materials Science, Ceramics
Taotao Hu, Minggang Zhang, Hui Mei, Xiao Wang, Peng Chang, Laifei Cheng
Summary: This study demonstrates the potential of 3D-printed porous and planar substrates for the growth of Bi2O3 as anode materials in aqueous rechargeable batteries. The porous structure enables rapid charge transfer and ion diffusion, leading to remarkable specific capacity and improved cycle stability. Furthermore, the use of porous structure also prevents the harmful accumulation of bismuth-based mixture deposition on the anode surface, mitigating electrode passivation.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Environmental
Hui Mei, Hao Li, Zhipeng Jin, Liangjun Li, Dou Yang, Chengyu Liang, Laifei Cheng, Litong Zhang
Summary: A lightweight thermal protection/insulation integrated sandwich structure was developed using 3D printing technology and the sol-gel method. The structure consisted of silicon carbide (SiC) ceramic lattice frameworks with a body-centered lattice core (BCLC) and quartz fibers reinforced silica (Qf/SiO2) aerogel filling. The sandwich structure exhibited improved thermal insulation efficiency and mechanical strength compared to the BCLCs. This study provides an efficient and reliable method for the preparation of thermal protection/insulation integrated components.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Mechanics
Zeeshan Ali, Yuekai Yan, Hui Mei, Laifei Cheng, Litong Zhang
Summary: This study investigates the impact of infill density, fill patterns, and composite type on the mechanical properties of carbon fiber reinforced 3D printed nylon composites. The results show that the composite with 50% infill density and triangular fill pattern exhibits the highest tensile strength, Young's modulus, and toughness. The composites in the side build direction have higher tensile strength and Young's modulus but lower toughness compared to the flat build composites.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Manufacturing
Changhui Niu, Qing Zhang, Laifei Cheng, Fang Ye, Litong Zhang
Summary: This study proposes and verifies a simple and cost-effective method to prepare Cf/SiC composites with dispersed C-SiC interphase. The dispersed C-SiC interphase is formed by the diffusion of SiC precursor molecules into the porous carbon coating derived from the decomposition of the sizing agent. The study has a positive application value for the manufacture of composites in terms of significantly reducing the preparation cost and cycle duration.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(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, Physical
Yunhui Fang, Xiaofang Zhang, Dongming Yan, Zhijun Lin, Xiuxing Ma, Junying Lai, Yi Liu, Yuliang Ke, Zhanhua Chen, Zhaopeng Wang
Summary: Different molecular structures of polycarboxylate ether (PCE) were prepared and characterized. PC-1 exhibited higher charge density and better molecular structure extension compared to PC-2. Additionally, LC and PC-2 showed inhibition during the hydration acceleration period, while PC-1 had a greater retarding effect on the hydration induction period. The addition of PCE with different structures did not significantly affect the morphology of hydration products in the later stage.
Article
Polymer Science
Yunhui Fang, Zhijun Lin, Dongming Yan, Xiaofang Zhang, Xiuxing Ma, Junying Lai, Yi Liu, Zhanhua Chen, Zhaopeng Wang
Summary: In this study, polycarboxylate superplasticizer (PCE) with different carboxyl densities and main chain degrees of polymerization was synthesized. The impact of PCE's diverse microstructures on cement slurry's properties, such as adsorption, rheology, hydration heat, and kinetics, was investigated. The findings showed that carboxyl density affected the molecular weight, flowability, and adsorption of cement slurry. Main chain degree of polymerization influenced the flowability and adsorption behavior as well. PCE samples with higher carboxyl density and specific main chain degrees showed different effects on the hydration kinetics and morphology of the cement slurry.
Article
Chemistry, Physical
Yunhui Fang, Zhanhua Chen, Dongming Yan, Yuliang Ke, Xiuxing Ma, Junying Lai, Yi Liu, Geli Li, Xiaofang Zhang, Zhijun Lin, Zhaopeng Wang
Summary: Polycarboxylate ether (PCE) with different main chain structures was synthesized using unsaturated acids with sulfonic acid groups, acrylamide groups, and carboxyl groups, as well as isoprenyl polyoxyethylene ether (IPEG). The molecular structure was characterized, and the adsorption, dispersion, and hydration properties were investigated. The results showed that the adsorption of PCE on cement particles is a physical adsorption process driven by electrostatic interaction and hydrogen bonding. The introduction of sulfonic acid groups and polycarboxylic acid groups reduced the initial adsorption amount but enhanced the adsorption rate and equilibrium amount. The introduction of acrylamide groups improved dispersion and reduced the viscosity of cement slurry. PCE also delayed the hydration of cement, with acrylamide and dicarboxylic acid groups prolonging the induction period while sulfonic acid groups had no retardation effect.
Article
Materials Science, Ceramics
Zilong Xiong, Wenzhuo Xue, Mujun Li, Feihu Tan, Yupeng Chen, Hongyu Yu
Summary: In this study, CBS glass/Al2O3 composites were developed for LTCC applications based on a CaO-B2O3-SiO2 (CBS) glass system with a high boron content. The study revealed that the softening of glass and interfacial reaction between the glass and Al2O3 were the two most important factors affecting LTCC's densification process. Real-time shrinkage rate of LTCC during sintering was successfully simulated, and it was proven that the formation of the CaAl2(BO3)O phase played a significant role in reducing glass viscosity and promoting dense structure formation. The resulting LTCC composite exhibited excellent performance for high-frequency applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Saurabh Kumar Sharma, Vinita Grover, Rakesh Shukla, Abid Hussain, Ambuj Mishra, Pawan Kumar Kulriya
Summary: In this study, the disordering caused by swift heavy ion irradiation in two different compositions of pyrochlore structures was investigated. X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy were used to analyze the samples before and after irradiation. It was found that both compositions underwent amorphization due to irradiation, with a slower rate observed in Nd1.8Zr2.2O7.1. The irradiation-induced modified track region in Nd1.8Zr2.2O7.1 consisted of defect-rich pyrochlore structure, anion-deficient fluorite structure, and amorphous domains.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiabei He, Mengshan Song, Ming Yang, Miaomiao Zhu
Summary: This study investigates the influence of ion irradiation on high-entropy ceramics and finds that irradiation-induced lattice rearrangement can improve the radiation resistance of these ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yajie Yu, Shi He, Zhengang Zhang, Haihua Chen, Peipeng Jin, Binnian Zhong, Linhui Zhang, Liping Wang, Cheng Lu
Summary: Silicide ceramics, including tantalum disilicide (TaSi2), are known for their exceptional physical properties but are limited in practical applications due to their inherent brittleness at room temperature. In this study, we successfully improved the mechanical properties of TaSi2 ceramics and increased their electrical conductivity by modifying the preparation methods and sintering conditions. These findings provide valuable insights for future applications of TaSi2 and the design of advanced ceramic materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jian Li, Jia Liu, Yongcui Zhang, Wei Sun, Yang Wang, Haitao Wu, Ling Li, Chuanbing Cheng, Yingying Wang, Ke Tan, Futian Liu
Summary: Microstructure design plays a crucial role in regulating the microwave dielectric properties of materials, however, the understanding of frequency temperature stability and related micromechanism remains limited. In this study, a combination of first-principles calculations and experimental observation was used to investigate the correlation among sintering behavior, crystal structure, bonding nature, and microwave dielectric properties of LnPO(4) (Ln = Eu, Pr) ceramics. The research findings systematically clarify the optimized effect and micromechanism of lanthanides on the dielectric properties of monazite ceramics, providing insights into the design and enhancement of microwave dielectric materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Wenqian Pan, Xizhen Xia, Wei Zhou, Yang Li
Summary: The study investigates the frictional and wear behaviors of carbon fiber-reinforced SiC ceramic matrix composites with different fiber orientations mating with ceramic balls. The results show that fiber orientation significantly affects the friction and wear properties of the composites. Pads with randomly arranged fibers demonstrate better friction stability and lower wear volume, potentially suitable for bearing material applications. The research also explores the factors influencing the formation of continuous tribo-film and identifies abrasive wear and oxidation wear as the dominant wear mechanisms for the friction pairs.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sergey Nikolaevich Perevislov, Ilya Evgenievich Arlashkin, Valentina Leonidovna Stolyarova
Summary: This paper describes the synthesis and sintering of MAX phases in the Zr-Al-C system. Different mixtures of initial Zr/Al/C and Zr/Al/ZrC powders were used to synthesize Zr2AlC and Zr3AlC2 MAX phases. The highest content of Zr3AlC2 MAX phase was obtained using a component ratio of 1:1.5:2-51.1 vol.% of Zr/Al/ZrC powders.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Weijia Luo, Xubin Wang, Baiheng Bai, Jianli Qiao, Xingcong Chen, Yongzheng Wen, Jingbo Sun, Lingxia Li, Ji Zhou
Summary: This study successfully establishes the relationship between internal strain and dielectric loss by synthesizing and designing specific structure of tungsten bronze ceramics, and concludes that controlling internal strain can effectively reduce dielectric loss. This research is of great significance for the development of future all-ceramic non-Hermitian devices.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Santanu Mondal, Juan Diego Shiraishi Lombard, Sreenivasulu Gollapudi, Carolina Tallon, Jie-Fang Li, Dwight Viehland
Summary: Ultrafast high-temperature sintering (UHS) is an effective method for rapidly densifying ZrB2 powders. The final grain size increases with longer sintering duration. X-ray diffraction and energy-dispersive spectroscopy show crystalline phase and compositional uniformity in ZrB2 after UHS.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
JiaNan Wang, ZhiQiang Li, YongZheng Zhu, Yao Liang, Yan Cui, HuaLong Tao, Bo Song, Alexander Nikiforov, ZhiHua Zhang
Summary: First-principles calculations were performed to investigate the crystal structure, electronic structure, and ion diffusion of sulfur-doped Li2FeSiO4. The results showed that sulfur doping can improve the electronic conductivity and reduce the energy barrier for ion diffusion.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Xiaodi Dai, Serdar Aydin, Mert Yuecel Yardimci, Gunter Reekmans, Peter Adriaensens, Geert De Schutter
Summary: This study investigates the rheological behavior, solidification process, and nanostructure changes of sodium hydroxide-activated slag (NH-AAS) and sodium silicate-activated slag (SS-AAS) pastes over time. The results show that NH-AAS and SS-AAS release similar heat and reach a similar reaction degree at their initial setting times, but have different gel structures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yanliang Ji, Simon Becker, Zichen Lu, Alexander Mezhov, Regine von Klitzing, Schmidt Wolfram, Dietmar Stephan
Summary: This study reveals the significant influence of resting time on the rheological properties of cement suspensions, which is closely related to non-absorbed polycarboxylate superplasticizers (PCEs) size variation. Adsorbed PCE during resting tends to bridge particles instead of dispersing them, leading to an increased yield stress.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yifeng Huang, Xin Wang, Yinchang Ma, Xiang Lv, Jiagang Wu
Summary: This study investigates the effect of K/Na ratio on the phase structure, ferroelectric domains, and piezoelectric properties of potassium sodium niobate (KNN)-based ceramics. It reveals that high Na+ content leads to large ferroelectric domains, while high K+ content results in local polarity heterogeneity and distinct dielectric relaxational behavior. The balanced local polarity and stress heterogeneities contribute to improved piezoelectricity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zun Xia, Yedong Rong, Hao Li, Ye Dong, Hongbo Yu, Jie Xu, Xiuhui Wang, Jinlong Yang
Summary: This study presents the synthesis of hollow MgAl2O4 particles in situ within porous ceramics, resulting in volume expansion and the formation of a hierarchical pore structure, leading to a significant improvement in compressive strength.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Honglong Wang, Zhiguo Sun, Faming Xia, Chenguang Yang, Xiaoguang Wang, Jintang Li, Linxu Jiang
Summary: In this study, the micro-geometry morphology variation and microstructural transformation mechanism of muscovite crystals under electron beam irradiation were explored. The results revealed the instability of the muscovite lattice under irradiation, as well as the expansion and shrinkage of the lattice with increasing dose. The study also identified changes in chemical structure and other mechanisms involved. These findings are significant for the design of radiation-resistant silicate materials and the manufacturing of electronic components used in the aerospace industry.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)