Article
Chemistry, Multidisciplinary
Chao He, Bin Du, Juan Ma, Hao Xiong, Junjie Qian, Mei Cai, Anze Shui
Summary: The study improves the low-frequency sound absorption coefficient of porous ceramics by coating a graphene oxide (GO) and styrene-butadiene rubber (SBR) composite film inside, achieving a sound absorption coefficient of 30.4% in the range of 200-800 Hz. Designing three-dimensional interconnected porous structures on the microscale is expected to be useful for developing porous sound absorbing materials effective in middle-and low-frequency noise.
Article
Materials Science, Ceramics
Shynar Kultayeva, Young-Wook Kim, In-Hyuck Song
Summary: The study found that doping significantly affects the properties of porous SiC ceramics, with electrical resistivity strongly influenced by doping while thermal and mechanical properties primarily dependent on the necking area between grains. Results show that the electrical conductivity of porous SiC ceramics can be successfully tuned independently of the thermal conductivity through suitable doping.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Shalini Rajpoot, Jang-Hoon Ha, Young-Wook Kim
Summary: The mechanical, thermal, and electrical properties of porous SiC ceramics can be independently tuned by selecting the appropriate starting particle size and sintering atmosphere. In the porosity range of 40% to 54%, the compressive strength and thermal conductivity of porous SiC ceramics increased as the porosity increased, contrary to the general trend. Additionally, the electrical conductivity of porous SiC ceramics sintered in N-2 atmosphere was significantly higher compared to those sintered in Ar atmosphere due to N doping in the PCS-derived beta-SiC.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Xianxi Li, Liwen Yan, Yibo Zhang, Xukun Yang, Anran Guo, Haiyan Du, Feng Hou, Jiachen Liu
Summary: The demand for high-performance lightweight thermal insulation materials in reusable spacecraft and vehicles has led to the development of porous silica ceramics with lightweight, ultra-low thermal conductivity, and enhanced compressive strength. By using different sizes of silica particles, the compressive strength and pore structure integrity of the ceramics were improved. These ceramics have a very low thermal conductivity and are suitable for use as thermal insulation materials in aerospace and space applications.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Xianxi Li, Liwen Yan, Anran Guo, Haiyan Du, Feng Hou, Jiachen Liu
Summary: Silica-alumina composite porous ceramics with high porosity and low thermal conductivity were prepared by the particle-stabilized foaming method. They have the potential to serve as thermal insulation material in the spacecraft industry.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Xing Zhou, Jingrui Deng, Changqing Fang, Wanqing Lei, Yonghua Song, Zisen Zhang, Zhigang Huang, Yan Li
Summary: This study prepared carbon nanotubes/polylactic acid composites using 3D printing method, and found that the orientation of CNTs affected the properties of the composites. The 3D printing process was beneficial for improving the electrical conductivity and mechanical properties of the composites.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
H. Shen, J. T. Wang, L. Xie, M. T. He, J. W. Chen, Y. L. Lu, M. Z. Wang
Summary: Composites of TiC and 7075 aluminum alloy were prepared by friction stir processing and heat treatment to improve material properties and tested for creep performance. The composites exhibited low creep rate and high creep life after the coupling treatment. The TiC particles showed good interfacial bonding coherence in the matrix, and the creep mechanism changed from viscous sliding of dislocations to grain boundary sliding creep control mechanism.
Article
Mechanics
Li Tian, Guannan Wang, Haitao Zhao, Mingqing Yuan, Yahui Peng, Ji'an Chen
Summary: A novel multiscale semi-analytical model is proposed to study the thermal conductive behaviors of carbon nanotube-reinforced composites, demonstrating significant enhancement of transverse thermal conductivity in CFRCs and minimal impact on longitudinal thermal conductivity due to CNT coating. The model is validated against available simulations and finite element method, and localized heat-flux/temperature distributions are recovered to predict crack initiations within microstructures.
COMPOSITE STRUCTURES
(2021)
Article
Chemistry, Multidisciplinary
Francesca Romana Lamastra, Giampiero Montesperelli, Emanuele Galvanetto, Mehdi Chougan, Seyed Hamidreza Ghaffar, Mazen J. Al-Kheetan, Alessandra Bianco
Summary: Due to global environmental concerns, it is imperative to improve the service life of structures and infrastructures. Graphene oxide nanosheets (GONSs) dispersed in a cement matrix can enhance building materials' performance by promoting hydration, refining microstructure, and improving interfacial bonding.
Article
Materials Science, Composites
S. S. Vinay, M. R. Sanjay, Suchart Siengchin, C. V. Venkatesh
Summary: The addition of Al2O3 nanofillers in basalt/epoxy laminate composites has significant effects on mechanical, wear, and hardness characteristics, with improvements in flexural strength and ILSS but reductions in tensile strength. Wear tests show a decrease in wear loss with increasing percentage of fillers.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Ceramics
Xianpan Shi, Qilong Liao, Laibao Liu, Feiyan Chen, Hanzhen Zhu, Lihua Zhang, Chuanbei Liu
Summary: Using multiple solid wastes to prepare foam glass ceramics can improve the utilization rate of solid wastes. This study used waste glass, granite tailings, and high titanium blast furnace slag to prepare foam glass ceramics, and studied their physical properties and sintering process.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Bo Zhu, Yi Luo, Haiyi Wu, Du Sun, Luo Liu, Shengcheng Shu, Zhong-Zhen Luo, Qiang Zhang, Ady Suwardi, Yun Zheng
Summary: In this study, p-type Bi0.5Sb1.5Te3/SiC composites with enhanced thermoelectric properties were prepared using a low-temperature liquid phase sintering (LPS) method. Heat treatment at 350 degrees C led to a nearly two-fold increase in the power factor, attributed to carrier concentration modulation induced by porosity. Addition of 0.6 vol% SiC resulted in a low lattice thermal conductivity of 0.33 W m(-1) K-1 due to phonon scattering induced by SiC inclusion. Ultimately, a figure of merit ZT of 1.05 at 340 K was achieved, 20% higher than the pristine sample, with an average ZT of 0.87 at 300-500 K, comparable to state-of-the-art values via high-temperature processing. This work demonstrates the promising application of the low-temperature LPS technique for energy-efficient processing of thermoelectrics.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Composites
Haoran Liao, Tao Yu, Yan Li
Summary: GO/PA6 nanocomposites with different graphene content were prepared via in situ polymerization, and their rheological properties and thixotropy were studied using rheological methods.
POLYMER COMPOSITES
(2023)
Article
Construction & Building Technology
Jeong-A Oh, Mathias Aakyiir, Yue Liu, Aidong Qiu, Tahlia R. Meola, Philip Forson, Sherif Araby, Yan Zhuge, Sang-Heon Lee, Jun Ma
Summary: This study developed a facile methodology for the preparation of nanoscale dispersion of cellulose nanofibers (CNFs) and proposed a suite of methodologies to assess the dispersion quality of CNFs. The results showed that CNFs were compatible with cement and could significantly improve the compressive strength and flexural strength of cement, while also reducing pore volume and water absorption. The reinforcing mechanisms were explained through the control of hydration, pore structure, and morphologies of the nanocomposites.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Materials Science, Ceramics
Xiaoqing Chen, Hao Li, Pengcheng Zhang, Gaosheng Li
Summary: Co2P2O7 ceramics were prepared using traditional solid-state sintering technique, with research conducted on their phase composition, grain size distribution, and densification. The influence of pores on permittivity, dielectric loss dependency on porosity, and the low values of ε(r) explained by covalent P-O bonds were explored, along with the relationship between polar phonon modes and dielectric properties using Raman spectroscopy. Optimum dielectric properties were achieved at 1160 degrees C for 4 hours.
CERAMICS INTERNATIONAL
(2021)
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)