Article
Chemistry, Physical
Rui Peng, Hua Su, Yuanxun Li, Yongcheng Lu, Chengyong Yu, Liang Shi, Daming Chen, Bin Liao
Summary: The study demonstrates that substituting Zn element with Ni2+ in Zn3B2O6 ceramic can enhance sintering and dielectric properties, resulting in slight changes in properties such as activation energy and densification window.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Zelai Cheng, Lin Gan, Yuan Liu, Juan Jiang, Tianjin Zhang
Summary: This study investigates the impact of SV addition on the microstructure, dielectric properties, sintering process, and defects behavior of microwave dielectric ceramics. It confirms the formation of SrTiO3 and glass phase, which leads to a decrease in sintering temperature. The variation in dielectric properties follows empirical mixture rules, with a near-zero tau(f) value obtained. The defects behavior, including oxygen vacancies and Ti3+ and V4+ dopants, is characterized, with a higher dielectric loss observed in the SV-added ceramics. Finally, a 0.7Li(2)Zn(3)Ti(4)O(12)-0.3Sr(3)(VO4)(2) ceramic exhibits excellent microwave dielectric properties and compatibility with silver electrode, showing potential applications in low-temperature co-fired ceramics (LTCC).
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Ruixin Yang, Mingxia Wang, Tianying Qin, Enzhu Li, Chaowei Zhong
Summary: In this study, SrWO4-x wt.% Li2MoO4 (x = 2.5, 5, 7.5, 10) ceramics were synthesized at low temperature using the solid-state synthesis method. The effect of Li2MoO4 on the crystallization, activation energy, microstructure, and sintering process were discussed in detail. Li2MoO4 significantly reduces the sintering temperature of SrWO4 and promotes the shrinkage and densification of the ceramic at low temperature. Specifically, the SrWO4 ceramics containing 5 wt% Li2MoO4 sintered at 875 degrees C exhibits the most favorable microwave dielectric properties, demonstrating potential applications in the field of low-temperature co-fired ceramics (LTCC).
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Ravindra Deshmukh, Varsha Chaware, R. Ratheesh, Girish J. Phatak
Summary: The addition of BBSZ glass helps reduce the sintering temperature of zinc silicate and increase the sintered density of the composite, leading to higher dielectric constant and dielectric loss.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Yunfeng Guo, Zexing Wang, Jiamao Li
Summary: In this study, novel LTCC materials with good microwave dielectric properties were developed by adding LiF sintering aid to LTCN ceramics. By adjusting the doping amount and sintering conditions of LiF, the microstructure and microwave dielectric properties of the ceramics were improved, making them potential materials for LTCC applications.
Article
Materials Science, Multidisciplinary
Zhuo Xing, Juhai Weng, Chi Ma
Summary: A series of Zn2-xCuxGeO4 ceramics were prepared by solid-phase sintering, and Cu2+ substitution for Zn2+ improved the single-phase formation and densification. This led to significant improvement in microwave dielectric properties. The addition of sintering aids (B2O3) to a representative composition with x = 0.08 further reduced the sintering temperature and greatly enhanced the Qxf value. The chemical compatibility of the ceramics was confirmed through cofiring with silver electrodes, indicating promising potential for advanced substrates.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Haonan Cui, Hongcheng Yang, Hua Wang, Yixuan Zheng, Yuchen Wang, Hongyu Yang, Enzhu Li
Summary: CaO-Al2O3-B2O3 (CAB) glass-ceramics with varying Al2O3 content were prepared using the melting method. The samples exhibited good crystallization, dielectric properties, and sintering behavior.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Xinyuan Lyu, Luchao Ren, Le Xin, Zhengxin Li, Xianxin Zhang, Zheng Luo, Pengchao Shao, Yuxiao Zhang, Panpan Lyu, Mingwei Zhang
Summary: In this study, an interesting attempt was made to lower the sintering temperature of MgGa2O4 for LTCC application by adding CuMoO4. Through ion substitution, the composites demonstrated different sintering and dielectric properties. The 0.5MgGa2O4-0.5CuMoO4 ceramics sintered at 900 degrees C showed the best comprehensive performance, making it more suitable for practical application.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Materials Science, Ceramics
Renu Gupta, Dong Hyun Kim, Hyo Tae Kim
Summary: In this study, the (Na1-xKx)(2)MoO4 ceramic series with Mo-based glass-free spinel structure was prepared using the traditional solid-state method at low sintering temperature (<650 degrees C). The microwave dielectric properties of the series were analyzed in terms of phase compositions, crystal structure, and microstructure. The results showed that the formation of double-phase (cubic and orthorhombic) played a significant role in the entire (Na1-xKx)(2)MoO4 series. The ceramics exhibited excellent dielectric properties, making them a potential candidate for low-temperature co-fired ceramic (LTCC) substrate applications in high-speed data communications.
CERAMICS INTERNATIONAL
(2022)
Article
Physics, Applied
Jiawen Shi, Xingyu Chen, Weijun Zhang, Haijun Mao, Fenglin Wang, Jiatong Wei
Summary: This study investigated the effects of glass-ceramics sintering aid LBCP on CNT-LNT ceramic, finding that it can effectively reduce the sintering temperature and improve the dielectric properties. The addition of glass-ceramics can enhance the microwave performance of CNT-LNT ceramic, showing potential for future applications.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2021)
Article
Chemistry, Physical
Yan-Bo Guo, Kang Du, Chang-Zhi Yin, Jia-Qing Yang, Wei Luo, Fei Wang, Wen-Zhong Lu, Wen Lei
Summary: Al2-xScxMo3O12 (x = 0 - 0.6) ceramics were synthesized by a solid-state reaction. The doping of Sc3+ can adjust the phase transition temperature and improve the microwave dielectric properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Zexing Wang, Yunfeng Guo, Jiamao Li, Canhua Li
Summary: In this study, a novel oxyfluoride ceramic Li3TiO3F was successfully prepared and its microstructure and microwave dielectric properties were optimized. The ceramic exhibited favorable microwave dielectric performance when sintered at 900 degrees C, showing great potential for applications in LTCC technology.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Zhe Xiong, Bin Tang, Xing Zhang, Chengtao Yang, Zixuan Fang, Shuren Zhang
Summary: The study found that LB glass as a sintering aid lowered the sintering temperature of BNTCN ceramics, and the doped LB glass had significant effects on the structure, grain size, and dielectric properties. Excellent microwave dielectric properties were achieved at 950 degrees Celsius, indicating that the BNTCN ceramic doped with 5 wt% LB glass is a promoting LTCC material.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Mao Zeng, Xiaohui Wu, Hua Su, Jingkang Xu, Xiaoli Tang
Summary: Li1.0Nb0.6Ti0.5O3 + x wt% BaCu(B2O5) ceramics were synthesized and comprehensively analyzed for their sintering behavior, phase, Raman spectra, microwave dielectric characteristics, and chemical compatibility with Ag. The results demonstrate that doping Li1.0Nb0.6Ti0.5O3 ceramics with BaCu(B2O5) can reduce sintering temperature and improve density and quality factor. Li1.0Nb0.6Ti0.5O3 + 0.4 wt% BaCu(B2O5) samples sintered at 950°C for 4 hours exhibit excellent microwave dielectric properties and chemical compatibility with Ag, indicating potential applications in low-temperature co-fired ceramic technology.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Kang Du, Wei Zhu, Changzhi Yin, Jiaxing Fang, Gaocheng Zhang, Cai Zhou, Shengxiang Wang, Wen Lei
Summary: This study investigates the sintering behavior and microwave dielectric properties of SnO2 ceramics with improved relative density and permittivity by substituting Sn4+ with Ti4+ and introducing sintering aids. The results show increased relative density, permittivity, and temperature stability, making it a potential material for millimeter-wave communication.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
Rui Tian, Junzhang Wang, Zhou Xu, Xingzhong Guo, Wei Lei, Ronghua Ding, Yun Zhang, Hui Yang
Summary: The study fabricates a high-performance SiOC anode with bi-continuous macropores and robust skeletons, which exhibits milder volume change, high reversibility and stability, providing a promising fundamental material for achieving long-cycle SiOC anode materials.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Chemistry, Physical
Liruhua Zhang, Qianhong Shen, Feilong Huang, Libei Jiang, Jie Liu, Jiansong Sheng, Yue Li, Hui Yang
Summary: A 0D/1D CuBi2O4@WO3 nanofiber-membrane photocatalyst with step-scheme heterojunction was fabricated by electrospinning, exhibiting excellent photocatalytic activity and degradation effect.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Rui Tian, Fan Wang, Chang Zou, Zhen Pei, Xingzhong Guo, Hui Yang
Summary: In this study, a novel binder-free bifunctional water-splitting electrocatalyst was prepared through a hydrothermal process and phosphorization. The catalyst exhibited excellent reactive activity and catalytic stability, demonstrating promising performance for water splitting under alkaline conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Lingjie Zhang, Weiwei Cai, Ningzhong Bao, Xueyu Geng, Hui Yang
Summary: In this study, La2Sn2O7 pyrochlore was used as a reinforcing phase for a silver matrix. The enhanced interfacial bonding strength of Ag-La2Sn2O7 was confirmed both theoretically and experimentally, leading to the fabrication of silver-based composites with superior plasticity. The work provides a new strategy for constructing advanced silver-based composites for applications in the electrical contact field.
Article
Immunology
Yun Qian, Bo Tang, Hao Zhang, Hui Yang
Summary: In this study, circ_0129657 was found to inhibit proliferation and promote apoptosis and inflammatory factor secretion in oxygen-glucose deprivation-induced human brain microvascular endothelial cells via the miR-194-5p/GMFB axis, suggesting that circ_0129657 has the potential as a useful biological molecular marker in the diagnosis of stroke.
Article
Chemistry, Physical
Chen Chen, Yanmeng Chu, Linjun Zhang, Haojun Lin, Wenzhang Fang, Zheyu Zhang, Chaofei Zha, Kejia Wang, Hui Yang, Xuezhe Yu, James A. Gott, Martin Aagesen, Zhiyuan Cheng, Suguo Huo, Huiyun Liu, Ana M. Sanchez, Yunyan Zhang
Summary: The successful growth of self-catalyzed nanowires depends on the effective V/III ratio at the initial growth stage, which should be high enough to allow nucleation to extend to the entire contact area between the droplet and substrate, elevating the droplet off of the substrate, but not too high to keep the droplet. Additionally, cluster growth between nanowires is also initiated from large droplets. This study provides insights into the cluster formation mechanism from the growth conditions and can guide high-yield nanowire growth.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Gastroenterology & Hepatology
Suwan Sun, Hui Yang, Jiaojiao Xin, Heng Yao, Lunzhi Yuan, Keke Ren, Jing Jiang, Dongyan Shi, Qian Zhou, Zhanglu An, Beibei Guo, Jiaxian Chen, Lulu He, Xi Liang, Tong Cheng, Ningshao Xia, Jun Li
Summary: In this study, the characteristics of human bone marrow mesenchymal stem cells (hBMSCs) transdifferentiation into liver and immune cells were investigated. By transplanting a single type of hBMSC into immunodeficient mice with fulminant hepatic failure (FHF), a dual-humanized mouse model was developed. Transcriptomics analysis identified two transdifferentiation phases and ten cell lineages derived from hBMSCs, including hepatocytes, cholangiocytes, stellate cells, myofibroblasts, endothelial cells, and immune cells. Four biological processes associated with the transdifferentiation and biological functions of hBMSC-derived cells were identified, providing insights into disease pathogenesis.
LIVER INTERNATIONAL
(2023)
Article
Chemistry, Physical
Shoutong Jin, Linming Zhou, Yongjun Wu, Shang Zhu, Qilong Zhang, Hui Yang, Yuhui Huang, Zijian Hong
Summary: A grand potential-based phase-field model was developed to study the effect of a gas bubble on the dynamics of dendrite growth during electrodeposition. The presence of a static gas bubble was found to significantly accelerate dendrite growth by serving as an ion reservoir and causing the dendrites to tilt towards the bubble. The size and distance of the bubble to the anode were found to affect the length of dendrite growth, while a mobile bubble was found to delay dendrite growth due to the stirring effect.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Zhao Zhang, Qilong Zhang, Zhaoyue Xia, Jing Wang, Heng Yao, Qianhong Shen, Hui Yang
Summary: A flexible, superhydrophobic and environmentally resistant triboelectric nanogenerator (TENG) with enhanced output performance has been proposed using a cost-effective surface modification and co-blending method. The introduction of surface modified BN (m-BN) significantly improved the roughness, hydrophobicity, and surface potential of the composites, resulting in an excellent triboelectric output of 43 W/m(2) for the m-BN/TENG. Furthermore, the m-BN/TENG maintained 90% initial electrical output at 80% humidity and showed no noticeable change in output performance after treatment with acid and alkali. It has also been demonstrated as a self-powered humidity sensor and droplet detector with high sensitivity and ultra-fast response time.
Article
Materials Science, Biomaterials
Beibei Guo, Qian Zhou, Jiaxian Chen, Jiaojiao Xin, Li Jiang, Hui Yang, Dongyan Shi, Keke Ren, Genren Yang, Xingping Zhou, Peng Li, Jinjin Luo, Lulu He, Hozeifa Mohamed Hassan, Xi Liang, Heng Yao, Shiwen Ma, Bingqi Li, Lei Geng, Changyong Wang, Jing Jiang, Jun Li
Summary: This study achieved the successful orthotopic transplantation of functional bioengineered livers, based on whole decellularized liver scaffolds, which effectively prolonged the survival of rats subjected to complete hepatectomy.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Article
Construction & Building Technology
Zhijun Liu, Shaochun Li, Shiyu Sui, Ang Liu, Yongjuan Geng, Xu Chen, Jialin Jiang, Yancen Liu, Junxiang Lu
Summary: In this study, the waterproofing of cement was improved by hydroxylation modification of hexagonal boron nitride (h-BN) and the preparation of h-BN/isobutyltriethoxysilane (IBTS) hybrid latex. The optimal hydroxylation condition was determined, and the bonding and interaction mechanisms between hydroxylated h-BN and silane were analyzed. The modified h-BN showed good dispersion in silane and resulted in a decrease in water absorption coefficient and average surface energy when applied on cement.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Applied
Xu Chen, Yan Gao, Youlai Zhang, Mengjun Hu, Yongjuan Geng, Shaochun Li, Shiyu Sui, Guozhu Liang
Summary: Inhibiting moisture transfer at the surface of concrete is crucial for its durability. A compound gel, prepared using a double silane system, effectively resists external moisture intrusion and addresses issues with traditional silane-based protective materials. Test results confirm the compound gel's performance and its ability to meet high durability requirements.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2023)
Article
Chemistry, Physical
Anjun Hu, Wei Chen, Yu Pan, Jun Zhu, Yinuo Li, Hui Yang, Runjing Li, Baihai Li, Yin Hu, Dongjiang Chen, Fei Li, Jianping Long, Chaoyi Yan, Tianyu Lei
Summary: In this study, a robust composite solid electrolyte interphase (C-SEI) consisting of fluorine doped boron nitride and organic polyvinyl alcohol is proposed. Experimental results show that the C-SEI modified lithium anode exhibits dendrite-free performance, stable cycling, and ultra-low overpotential. The capacity retention rate is also significantly improved by using the C-SEI. These findings provide a feasible strategy to address the instability of solid electrolyte interphase and demonstrate great prospects for the practical application of lithium metal batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Energy & Fuels
Henghua Zhang, Qianbin Dong, Juetian Lu, Yaping Tang, Wenjian Bi, Yue Gao, Hui Yang, Jiabang Wang
Summary: In this study, sodium acetate trihydrate was modified with urea, ethylene glycol, and disodium hydrogen phosphate dodecahydrate. The modified phase change material was impregnated into expanded perlite to obtain a composite phase change material, which was encapsulated with epoxy resin as the coating to obtain a coated composite phase change material with excellent thermal stability and minimal leakage. Lab tests showed delayed temperature reduction and prolonged thermal performance in insulated boxes.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Nanoscience & Nanotechnology
Qichao Hou, H. Aruni Fonseka, Faustino Martelli, Barbara Paci, Anders Gustafsson, James A. Gott, Hui Yang, Suguo Huo, Xuezhe Yu, Lulu Chen, Yanmeng Chu, Chaofei Zha, Zheyu Zhang, Linjun Zhang, Fuxiang Shang, Wenzhang Fang, Zhiyuan Cheng, Ana M. Sanchez, Huiyun Liu, Yunyan Zhang
Summary: Crystal-phase engineering between ZB and WZ structures is important in designing unique optoelectronic and electronic semiconductor devices. This study compares the doping differences between these two crystal structures using GaAs NW shells. Si is found to have higher incorporation efficiency into the WZ structure due to a lower incorporation energy. This work provides useful information for doping control and device design.
ACS APPLIED NANO MATERIALS
(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)
