Article
Materials Science, Ceramics
Kundan Kumar, Mi-Ju Kim, Hyeon-Myeong Oh, Young-Jo Park, Ha-Neul Kim, Ho Jin Ma, Jae-Wook Lee, Jae-Woong Ko
Summary: This study fabricated dense Si3N4 ceramics using a low-temperature pressureless sintering technique and examined the effects of three different ternary oxide additives on the material's properties. The results showed that adding 5 wt.% of Y2O3-MgO-Al2O3 additive resulted in high density, strength, and hardness of Si3N4.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
E. Arastoo, B. Movahedi, Z. Yousefian, M. Milani
Summary: This study successfully obtained high-density green pieces from alpha-alumina/amorphous alumina core-shell nano composite powder using the slip-casting process and sintered them under vacuum conditions by pressureless sintering method. The application of the amorphous phase as a shell in the initial powder aided in sintering and reduced sintering temperature, leading to a relative density of 99.5% and transmission of 72% in the IR region at 1300 degrees C. The slip-casting method resulted in high-green density and high-final density.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Review
Materials Science, Ceramics
Hortense Le Ferrand
Summary: Research in ceramic processing aims at creating ceramics with challenging properties, and magnetic slip casting has been found to enhance the properties of ceramics by creating controlled texture. This process allows for identifying critical directions for future advancement in advanced technical ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Chunxi Luo, Neng Li, Tengfei Deng
Summary: Silicon nitride (Si3N4) ceramics were strengthened by evolving the grain interface between Si3N4 and ZrO2, resulting in an increased bending strength of 982.8 MPa and fracture toughness of 9.81 MPa·m(1/2). The interface evolution of Si3N4 and ZrO2 grains was studied using molecular dynamics simulation and experiments, revealing the presence of a glass phase film and Zr3N4 film at the Si3N4/ZrO2 interface. The formation mechanisms of the interface structure involving Si-O and Zr-N bonds were described through first-principles molecular dynamics simulation. Additionally, a embedded-like composite structure between Si3N4 and ZrO2 was formed during sintering, leading to crack deflection and increased fracture energy.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Xiaokai Liu, Benshuang Sun, Xueyun Zeng, Zhongheng Zuo, Wenyu Zhang, Zhijun Wang, Chaofei Liu, Lijia Chen, Yongchun Shu, Yang Liu, Jilin He
Summary: High solid content and low viscosity slurry of aluminum-doped zinc oxide (AZO) and zinc oxide (ZnO) were prepared by milling. A new pressure slip casting technology was used to produce green compacts. The activation energies for densification and grain growth of AZO and ZnO were calculated by the MSC method. The two-step sintering method was used to optimize the sintering process of AZO targets, resulting in targets with a relative density of 99.8% and a grain size of 3.89 μm.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Weide Wang, Dongxu Yao, Hanqin Liang, Yongfeng Xia, Kaihui Zuo, Jinwei Yin, Yu-Ping Zeng
Summary: The development of bimodal microstructure is crucial for the thermal conductivity and fracture toughness of Si3N4 ceramics. The combination of SRT and GPS was used to promote the development of bimodal microstructure, resulting in improved performance of the ceramic materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Kundan Kumar, Young -Jo Park, Mi-Ju Kim, Ha-Neul Kim, Ho Jin Ma, Jae-Wook Lee, Jae-Woong Ko
Summary: Dense Si3N4 ceramic was fabricated by pressureless sintering, and the addition of ternary oxide additives was found to significantly affect the phase, microstructure, and thermal conductivity of the material.
Article
Materials Science, Multidisciplinary
Soheil Esteki, Rasoul Saeidi, Ghasem Dini, Mostafa Milani
Summary: In this work, the rheological behavior of silicon carbide (SiC) slurries was optimized to produce 20 mm disc-shaped green bodies with high relative density. The slip-casted SiC green bodies were sintered using spark plasma sintering (SPS) under specific conditions. Different characterization methods were used to analyze the initial powders, green bodies, and sintered samples. The results showed that using B4C powder as a solid phase sintering aid resulted in sintered SiC samples with uniform and dense structures without visible pores, with an optimal percentage of 7 wt%.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Ceramics
Xinran Li, Chaofei Liu, Benshaung Sun, Xiaokai Liu, Zhongheng Zuo, Yongchun Shu, Xueyun Zeng, Jianhong Yi, Haotian Chen, Yang Liu, Jilin He
Summary: By using high-efficiency bead milling dispersion technology, mixed nanoparticles were dispersed into high solid content and low viscosity ITO slurry to prepare green ITO compacts with uniform microstructures. The densification activation energies of the ITO compacts during sintering were calculated, and ITO ceramic targets with a grain size range of 3-6 µm were obtained using a two-step sintering method.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Van-Huy Nguyen, Seyed Ali Delbari, Zohre Ahmadi, Abbas Sabahi Namini, Quyet Van Le, Mohammadreza Shokouhimehr, Mehdi Shahedi Asl, Mohsen Mohammadi
Summary: In this study, the incorporation of Si3N4 and SiC additives in TiB2-based composites was investigated, revealing their impact on microstructure and sintering behavior. The use of spark plasma sintering at high temperature resulted in the formation of graphite and boron nitride components in the final composites. Thermodynamic evaluations showed the role of liquid phase sintering in enhancing the sinterability of the composite samples, while fractographical investigations identified transgranular breakage as the main fracture mode in the TiB2-based ceramics.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Shohreh Shahrestani, Mokhtar Che Ismail, Saeid Kakooei, Mohammadali Beheshti
Summary: SiC-Si3N4 composites were prepared by controlling the mixing ratios of Si and SiC powders and sintering temperatures. The composites sintered at 1450 degrees C exhibited the lowest porosity and absence of SiO2 phase. Hardness and flexural strength of the composites were strongly influenced by the alpha/beta-Si3N4 phase ratio.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Z. Yousefian, G. Dini, M. Milani, E. Arastoo
Summary: By optimizing processing parameters, yttria transparent ceramics doped with Zr were successfully fabricated, showing significantly improved transparency with the addition of 1 wt % ZrCl4 and achieving the highest transmittance.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Materials Science, Ceramics
Nicolas Gabriel Orsetti, Eduardo Rosado, Antonio Alonso, Gabriel Lorenzo, Rodrigo Moreno, Gustavo Suarez
Summary: Tape cast Li2ZrO3 thin sheets were successfully fabricated using organic stabilizers and an acrylic binder emulsion. The slip composition was optimized based on zeta potential and rheological flow curves, and the resulting tapes exhibited suitable strength and density after sintering. This detailed work is important for future research on solid-state electrolytes based on Li2ZrO3 tapes.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Zhongchao Fu, Xiaodong Li, Mu Zhang, Qi Zhu, Ji-Guang Li, Jiao He, Xing'an Wang, Xudong Sun
Summary: An easy and effective deionization suspension treatment was used to alleviate the hydrolysis issue of Y2O3 powder, resulting in fine-grained and highly transparent Y2O3 ceramics without the use of sintering additives. The use of centrifugal casting method improved the homogeneity of green bodies, leading to fully dense Y2O3 transparent ceramics with in-line transmittance close to theoretical values.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Ming Huang, Zhihang Peng, Wen Zhang, Yang Xiang, Feng Cao
Summary: Fused silica ceramic is widely used as radome materials, but its mechanical properties are poor. In this study, silicon nitride whisker was added to improve the mechanical properties while keeping the characteristic of radome materials. The preferred content of whisker was 10 wt.% and the resulting ceramic showed a 7.75% increase in flexural strength.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Chenning Zhang, Tetsuo Uchikoshi, Rong-Jun Xie, Lihong Liu, Yoshio Sakka, Naoto Hirosaki
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2019)
Article
Materials Science, Multidisciplinary
Naoto Shirahata, Tetuo Uchikoshi, Thi Kim Ngan Nguyen, Yoshitake Masuda, Yoshio Sakka
MATERIALS TRANSACTIONS
(2019)
Article
Materials Science, Ceramics
Bin Lu, Zhigang Sun, Xinyuan Wang, Hongbing Chen, Yoshio Sakka, Ji-Guang Li
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2019)
Review
Engineering, Chemical
Yoshio Sakka
KONA POWDER AND PARTICLE JOURNAL
(2019)
Article
Materials Science, Ceramics
Hongmei Cheng, Bin Lu, Yongxing Liu, Yan Zhao, Yoshio Sakka, Ji-Guang Li
CERAMICS INTERNATIONAL
(2019)
Article
Nanoscience & Nanotechnology
D. Demirskyi, H. Borodianska, T. S. Suzuki, Y. Sakka, K. Yoshimi, O. Vasylkiv
SCRIPTA MATERIALIA
(2019)
Article
Materials Science, Ceramics
Sofia Gomez, Nicolas M. Rendtorff, Esteban F. Aglietti, Yoshio Sakka, Mehdi Estili, Gustavo Suarez
JOURNAL OF ASIAN CERAMIC SOCIETIES
(2019)
Article
Chemistry, Multidisciplinary
Yunqing Kang, Bo Jiang, Juanjuan Yang, Zhe Wan, Jongbeom Na, Qian Li, Hexing Li, Joel Henzie, Yoshio Sakka, Yusuke Yamauchi, Toru Asahi
Article
Chemistry, Physical
Bo Jiang, Zhe Wan, Yunqing Kang, Yanna Guo, Joel Henzie, Jongbeom Na, Hexing Li, Shengyao Wang, Yoshio Bando, Yoshio Sakka, Yusuke Yamauchi
Summary: Researchers have developed a new type of porous metallic aerogels with a core-shell structure, exhibiting high conductivity and surface area for catalysis. By utilizing an auto-programmed synthesis method, they successfully generated a trimetallic core-shell Cu@Fe@Ni metallic aerogel with highly active catalytic properties.
Article
Materials Science, Ceramics
Ruxia Liu, Masakazu Tane, Hajime Kimizuka, Yuji Shirakami, Ken-ichi Ikeda, Seiji Miura, Koji Morita, Tohru S. Suzuki, Yoshio Sakka, Lianmeng Zhang, Tohru Sekino
Summary: In this study, the elastic properties of single-crystalline Ti3SiC2 MAX phase were investigated using polycrystalline samples with crystallographic texture. The results showed that despite its highly anisotropic layered structure, the single-crystalline Young's modulus was almost isotropic, with differences in shear modulus depending on crystallographic directions. First-principles calculations suggested that heterogeneous interlayer elastic deformation due to Ti-Si bonding stabilization is the origin of the elastic isotropy in Ti3SiC2 MAX phase.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Hanchen Shen, Kai Feng, Guangzhe Lu, Yoshio Sakka, Bin Lu
Summary: A series of phosphor particles doped with different concentrations of Yb3+ were studied, showing strong green and weak red emissions. The optimal concentrations of Yb3+ were determined to be 1.0 at% in oxide and 0.5 at% in oxysulfide, with the Lu2O2S:Er/Yb phosphor exhibiting significantly higher luminescence intensity.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Materials Science, Ceramics
D. Demirskyi, T. Nishimura, T. S. Suzuki, Y. Sakka, O. Vasylkiv, K. Yoshimi
JOURNAL OF ASIAN CERAMIC SOCIETIES
(2020)
Article
Chemistry, Multidisciplinary
Bo Jiang, Hui Song, Yunqing Kang, Shengyao Wang, Qi Wang, Xin Zhou, Kenya Kani, Yanna Guo, Jinhua Ye, Hexing Li, Yoshio Sakka, Joel Henzie, Yusuke Yamauchi
Proceedings Paper
Materials Science, Multidisciplinary
Yoshio Sakka, Salvatore Grasso
MATERIALS TODAY-PROCEEDINGS
(2019)
Article
Materials Science, Ceramics
Kiyoshi Kobayashi, Yukihito Igarashi, Noriko Saito, Tohru Higuchi, Yoshio Sakka, Tohru S. Suzuki
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
(2018)
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)