Article
Materials Science, Ceramics
Carolyn A. Grimley, Stephen Funni, Christopher Green, Elizabeth C. Dickey
Summary: In flash sintering experiments, the effect of temperature on the flash sintering of yttria-stabilized zirconia was examined. It was found that slower heating rates maximize final density, but processes that are too slow lead to grain growth. Except for grain boundary conductivity, most properties can be attributed to thermal profile.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Mingdeng Huang, Weiguang Lin, Yisimayili Tuersun, Xu Huang, Sheng Chu
Summary: Room-temperature liquid metals like galinstan have become a popular choice for stretchable electronics due to their excellent fluidity and conductivity. However, the alloying reaction between galinstan and metals reduces the stability of the composite. In this study, Ni@SiO2 nanoparticles with a core-shell structure were used as fillers to enhance the stability of galinstan composites. Flexible circuits made from the galinstan-Ni@SiO2 paste showed outstanding durability, retrievability, and self-healing ability under the influence of a magnetic field.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Nanoscience & Nanotechnology
S. Srinivasan, B. C. Hornbuckle, K. A. Darling, H. Kim, Y. Q. Wang, K. Solanki
Summary: The study found that Ta nanoclusters can effectively trap helium, forming small bubbles and suppressing swelling. Irradiated Cu-Ta alloys at different temperatures showed bubbles mainly concentrated around Ta nanoclusters, with larger bubbles at high temperatures primarily associated with nanoclusters.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Ceramics
Vladimir Prajzler, Karel Maca, Premysl St'astny, Richard Todd
Summary: The study found that in flash sintered 3YSZ ceramics, the microstructural homogeneity decreased with increasing direct current density and dwell time in a flash state, eventually leading to abnormal grain growth.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
M. Orlovska, L. Hulek, L. Baca, V Kovar, K. Tomanova, M. Kitzmantel, M. Janek, E. Neubauer
Summary: The research shows that even a negligible addition of zirconia particles can reduce grain growth after sintering of alumina. Zirconia-doped alumina has a narrower grain size distribution compared to pure alumina ceramic. Vickers hardness decreases with the increasing sintering temperature, and there is no significant dependence of the indentation fracture toughness on the presence of inclusions added in amounts up to 0.5 wt.%.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Sang-Chae Jeon, Se-Yun Kim, Kyoung-Seok Moon
Summary: The grain growth behavior of 92BaTiO(3)-3Y(2)O(3)-3MgO-2SiO(2) with a liquid phase was systematically investigated with varying oxygen partial pressure. It was found that the atmosphere significantly influenced the grain growth behavior, leading to changes in solid/liquid interfaces and grain boundaries. The shift in behavior was successfully explained by the step free energy effect, highlighting the importance of interface control in BaTiO3.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Qianlong Yang, Haifeng Zhu, Xiaomeng Ji, Yaping Zhang, Lianqing Yu
Summary: A new hollow core-shelled composite photocatalyst CuPc/Zn0.5Cd0.5S was studied, which exhibited significantly increased hydrogen production under visible light irradiation, as well as prolonged lifetime of photo-carriers and higher visible light utilization efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Yanhao Dong
Summary: There is growing interest in the long-term use of electrochemical devices under harsh conditions and field-assisted fast ceramic processing. This interest stems from the fact that extreme redox conditions can significantly increase the mobility of slow ions, resulting in accelerated microstructural evolution. Recent research has proposed a new mechanism involving strong electron-phonon interactions and dynamic electronic relaxations that lowers the ion migration barrier, explaining the enhanced slow ion kinetics observed in various experimental observations.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Environmental
Jie Hu, Xueqing Xiong, Wangwang Guan, Yong Chen, Haizhu Long
Summary: This study presents the fabrication process and gas sensing performance of core-shelled Co3O4-CoFe2O4 heterojunction composites with abundant mesoporous structures. The hierarchical Co3O4-CoFe2O4 was prepared using Fe-Co glycerate as a precursor and a subsequent thermolysis method. The well-designed core-shelled architecture showed a large specific surface area and improved absorption-penetration efficiency. The sensor using Co3O4-CoFe2O4 with a core-shell structure exhibited excellent ammonia sensing characteristics, selectivity, and long-term stability. These advancements can be attributed to the unique core-shell architecture and p-p heterojunction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Hui Luo, Beibei Ma, Fu Chen, Shanshan Zhang, Xian Wang, Yao Xiong, Yongzhi Cheng, Rongzhou Gong
Summary: Multi-interfacial hollow core-shelled yttrium aluminum garnet@nitrogen-doped carbon composites exhibit excellent microwave absorption properties and can be used for electromagnetic pollution protection.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Hao Zu, Qiuyun Fu, Guohua Cao, Hui Liu, Hui Huang, Liang Yan, Xiaojuan He, Chuanfeng Wang
Summary: Nanopowders of Bax-0.003La0.003TiO3 were synthesized using the sol-gel method. Abnormal grain growth was observed in the Ba-excessive composition at a low sintering temperature, contrary to previous reports. The presence of BaCO3 in the powder was confirmed to be responsible for the abnormal grain growth.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yunchao Zhao, Liujie Xu, Mingyi Guo, Zhou Li, Zhaoning Xu, Jiahao Ye, Wuhui Li, Shizhong Wei
Summary: In this study, nano-Zirconia powders doped with different yttrium content were prepared by hydrothermal method, and the grain growth mechanism was analyzed. The addition of Y2O3 can refine the grains, and the growth mechanisms at different stages were discussed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Tianjiao Lei, Mingjie Xu, Jungho Shin, Daniel S. Gianola, Timothy J. Rupert
Summary: Unique nanorod precipitates with a core-shell structure are found to nucleate from the grain boundaries of a bulk nanocrystalline Al-Ni-Y alloy. The local structure and chemistry of these features during annealing are studied. As annealing time increases, more nanorods transform to an ordered structure while the shell chemistry transitions from Y-rich to Ni-rich. The correlation between the nanorods and amorphous complexions is observed.
SCRIPTA MATERIALIA
(2022)
Article
Chemistry, Physical
Edwin Gevorkyan, Miroslaw Rucki, Zbigniew Krzysiak, Volodymyr Chishkala, Wojciech Zurowski, Wojciech Kucharczyk, Voskan Barsamyan, Volodymyr Nerubatskyi, Tomasz Mazur, Dmitrij Morozow, Zbigniew Siemiatkowski, Jacek Caban
Summary: The preparation of alumina-tungsten carbide nanocomposite was studied, where appropriate heating rates and pressure at different stages were found to be crucial in obtaining a structure with submicron grains. Additionally, a mixture of 50 wt.% Al2O3 and WC was discovered to provide the highest fracture toughness, while sintering temperature above 1600℃ was found to be disadvantageous.
Article
Chemistry, Physical
Xinyu Sun, Xiangcheng Li, Pingan Chen, Yingli Zhu
Summary: Designing nanocomposite with multi-level interfaces is an effective approach to improving the microwave absorbing capability of materials. The urchin-like multiple core-shelled Co/CoS2@NC@MoS2 composites (CCM) were fabricated and showed excellent microwave absorption performance with the strongest reflection loss (RL) of -43.9 dB. The CCM composite also exhibited a broad effective absorption bandwidth (EAB) of 4.4 GHz with a thickness of 1.5 mm, and all peaks of RLmin < -20 dB (99% absorptivity) within a thickness range of 1.0-3.5 mm.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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)