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Sintering, mechanical properties and hydrothermal resistance of ZrO2/ZrSiO4 slip cast composites J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-17 E. Rosado, S. Marín-Cortés, R. Moreno
Yttria-doped tetragonal zirconia polycrystalline (Y-TZP) is one of the most widely used materials in thermal applications and as a structural component due to its mechanical properties. Its drawbacks are the high cost of the starting raw materials and its polymorphic transformation to monoclinic phase associated with the occurrence of mechanical failures. In the present work, tetragonal zirconia materials
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Low-temperature sintering of (Co0.35Zn0.65)TiNb2O8 temperature-stable microwave dielectric ceramics with BaCu(B2O5) additions J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-16 Jia-Pei Jiang, Chang-Hao Wang, Wei Wang, Zhong-Qi Shi, Xiao-Gang Yao, Hui-Xing Lin, Tao Zhou, Ya-Wei Chen, Qi-Xin Liang, Mei-Rong Zhang, Di Zhou
In this study, the effects of BaCu(BO) (BCB) additive on the low-temperature sintering behaviour, microstructure evolution and microwave dielectric properties of (CoZn)TiNb2O8 (CZTN) ceramics were systematically investigated by introducing the additive into the solid-state sintering process. Adding BCB successfully lowered CZTN ceramics' sintering temp from 1150 °C to 925 °C while preserving their
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Evolution of the interfacial microstructure and mechanical properties of ATZ/ATZ joints brazed with a Ni–Ti interlayer J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-16 Qi Zhang, Kaihong Zheng, Juan Wang, Zhimin Ke
Reliable ceramic brazed joints of alumina-toughened zirconia (ATZ) were obtained using a NiTi interlayer. Investigation of the effects of interfacial microstructure on the mechanical properties of the joints was conducted. The results reveal that during the brazing process, both AlO and ZrO reacted with the NiTi interlayer, leading to the formation of double reaction layers of TiO and NiTiO adjacent
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Rapid densification of low-positive thermal expansion Al2W3O12 ceramics J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-15 Vojtech Marak, Marianne Diniz Rocha Henriques, Bojan A. Marinkovic, Daniel Drdlik
The AlWO ceramic with near-zero thermal expansion is a promising candidate for thermal shock resistance applications. However, the often-reported microcracks in the microstructure hinder the practical use of AlWO. This work focuses on optimising the material processing—powder synthesis, calcination, milling, and sintering—to prepare dense polycrystalline AlWO with fine microcrack-free microstructure
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Rheology and printability of alumina-toughened zirconia pastes for high-density strong parts via direct ink writing J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-15 Berfu Göksel, Nel Aaron Schulte, Mia Kovač, Erin Koos, Bart Van Meerbeek, Jozef Vleugels, Annabel Braem
Direct ink writing (DIW) is a promising additive manufacturing technique for fabricating structural ceramics, including alumina-toughened zirconia (ATZ), heavily reliant on the rheological properties of the paste. The rheological properties of aqueous ATZ pastes with 25 wt% Pluronic® F127 hydrogel and solid loadings of 28–44 vol% were investigated, complemented by characterization of the parts, including
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Elastic properties and microstructure evolution of Zn2SnO4-spinel-containing composite ceramics based on tin oxide and zinc oxide J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-15 Petra Šimonová, Lucie Kotrbová, Willi Pabst, Vojtěch Nečina, Petr Bezdička
Ceramics based on tin oxide (SnO) and zinc oxide (ZnO) were sintered at temperatures up to 1400 °C. Except for the end members, all these ceramics are two- or three-phase composites containing spinel phase (ZnSnO). Similar to pure SnO ceramics, also the spinel-rich composite (50:50 mixture) does not exhibit densification after sintering at 1400 °C. Spinel ZnSnO is formed in all composites, with a major
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Structural anatomy and thermal transitions of barium feldspars, BaAl2Si2O8 J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-14 Liudmila Gorelova, Sergey Britvin, Oleg Vereshchagin, Dmitry Pankin, Vladimir Bocharov, Oleg Silyukov, Anatoly Kasatkin
BaAlSiO (barium feldspar-based) materials are widely used in glass and ceramic industry due to high melting temperature, chemical resistance, low thermal expansion, low dielectric constants and attractive luminescence properties. The durability of barium feldspar ceramics strongly depends on reversible phase transitions between the low-temperature modification (celsian), and series of high-temperature
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Excellent oxidation resistance of rapidly crystallizing Cr2AlC coatings at high temperatures: Effect of microstructure J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-12 Yang Li, Yi Zhang, Zhibin Yang, Ke Ma, Jingjun Xu, Jingjing Li, Yueming Li, Jun Zuo, Meishuan Li
Two kinds of CrAlC coatings with different microstructures were prepared by direct crystallization during oxidation at 1000 ℃ and conventional crystallization at 700 ℃ for 1 h for amorphous Cr-Al-C coatings prepared by magnetron sputtering, respectively. The effect of microstructure on the oxidation behavior of the coatings at 1000 ℃ was investigated. The grain boundary density and dislocation density
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Synergetic effect of spontaneous Fe diffusion for enabling immediately switchable operations in NiFe-supported solid oxide cells J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-12 Yo Han Kim, Dayoung Park, Dahee Kang, Hyeoungwon Jeong, Jae-ha Myung
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Excellent microwave absorption property of 3D printed SiCN matrix metamaterial J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-12 Jundi Hu, Kun Liu, Zhuopeng Li, Yanhui Liu, Chao Ma, Daoyang Han, Hailong Wang, Rui Zhang, Gang Shao
The combination of 3D printing, polymer derived ceramics, and electromagnetic wave (EMW) absorption metamaterials is particularly useful for spacecraft stealth in extreme environments and is gradually gaining significant interest. While the 3D printing of SiOC has been extensively researched, the high temperature stability and mechanical performance of SiOC are not as favorable as SiCN. However, it
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Effect of yttrium-doped grain boundary on sintering behavior and properties of transparent ZnAl2O4 ceramics J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-12 Pengyu Xu, Hao Wang, Bingtian Tu, Honggang Gu, Weimin Wang, Shiyuan Liu, Chengliang Ma, Zhengyi Fu
Pore-closed ZnAlO ceramic can hardly be pressureless sintered from conventional (>100 nm) powder, which restricts the fabrication of the transparent ceramic by capsule-free hot isostatic pressing technique. This work focused on the effect of yttrium-doping on the microstructural evolution in the sintering of a ∼180-nm ZnAlO powder. At a concentration of 300 or 600 ppm, the yttrium ions segregated along
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Enhancing energy storage density of BNT-ST-based ceramics by a stepwise optimization strategy on the breakdown strength J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-12 Xinheng Li, Chaoqiong Zhu, Shiheng Li, Aoyu Li, Lanqing Liang, Ziming Cai, Peizhong Feng
High discharge-energy-storage-density () ceramics with high breakdown strength () are in high demand nowadays. However, enhancing always comes at the cost of significantly reduction on polarization. In this work, a stepwise-optimization strategy combining two-step sintering and chemical-coating is proposed to enhance of 0.6BiNaTiO-0.4SrTiO (BNT-ST) ceramics. Finally, significant enhancement on , delayed
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Thermochemical and mechanical properties of Ce0.9Pr0.1O2-δ-Pr0.6Sr0.4Fe0.9Al0.1O3-δ dual-phase membrane J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-11 Yanbo Liu, Jiajie Ma, Guocan Shen, Qiangchao Sun, Bing Liu, Tong Duan, Fangchun Su, Xionggang Lu, Hongwei Cheng
The fluorite-perovskite dual-phase CePrO-PrSrFeAlO (CP-PSFA) oxygen transport membrane (OTM) was developed to explore the properties and interaction of the two phases on the crystal structure, sintering behavior, thermochemical expansion, and oxygen release property, mechanical strength, and stability of the dual-phase membrane. The migration of oxygen vacancies between two phases causes the shrinking
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Evolution of Young’s modulus and damping of Czech kaolins during sintering monitored via impulse excitation J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-11 Eva Gregorová, Willi Pabst, Petra Šimonová, Petr Bezdička, Vojtěch Nečina
The evolution of Young’s modulus and damping is investigated for Czech kaolins via the impulse excitation technique (IET) from room temperature to 1250 and 1400 °C. During heating the processes of drying, dehydroxylation, spinel formation, mullitization, silica release and glass melting are clearly discernible. During cooling Young’s modulus increases, exhibiting a flat maximum around 800 °C and a
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Development of tunable porous alumina monolith using hollow microspheres via extrusion-based 3D printing J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-10 Sk S. Hossain, Farid Akhtar
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The enhanced strength and radiation efficiency of alumina reticulated porous ceramics via coal gangue addition J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-09 Zimeng Zhao, Xiong Liang, Yawei Li, Qinghu Wang, Liping Pan, Shaobai Sang
AlO reticulated porous ceramics (ARPC) are widely selected for high-temperature porous media burners due to their excellent thermal stability. However, the relatively low mechanical property and infrared emissivity of ARPC led to a low lifespan and radiation efficiency of the burner, limiting its application in high-temperature porous burners. In this work, a novel strategy was proposed to synergistically
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Analysis of multi-scale failure behavior of SiCf/SiC composite clad tube under flexible clamping damage J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-09 Liangliang Shen, Weidong Yan, Tianqi Zhu, Hongyin Li, Chenglong Xiao, Jian Xu
The intricate spatial fiber winding structure of SiC/SiC ceramic matrix composite (CMC) cladding tubes makes it difficult to investigate in depth the inherent evolutionary mechanism of damage failure under specific operating conditions. Therefore, in this study, based on X-ray computed tomography (X-CT) reconstruction and cross scale numerical simulation methods, combined with clamping failure experiments
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Residual chlorine prevents full densification of flash sintered yttria-stabilized zirconia ceramics J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-09 Vladimír Prajzler, Karel Maca, Richard Todd
The densification of yttria-stabilized zirconia (YSZ) during flash sintering is strongly dependent on the amount of residual chlorine in the sintered bodies. The residual chlorine, present as a remnant from powder synthesis, hinders densification after it is trapped and vaporized in the rapidly closing pores, limiting the final density at around 87 – 93% of theoretical. We show that this phenomenon
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Effect of oxide nanoparticles in aqueous alumina inks for material extrusion additive manufacturing J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-07 Sk S. Hossain, Farid Akhtar
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Optimize energy storage performance of NaNbO3 ceramics by multivariable control strategy J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-06 Mingzhao Xu, Xin Zhang, Dafu Zeng, Peng Nong, Yue Pan, Qinpeng Dong, Huanfu Zhou, Xu Li, Xiuli Chen
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Experimental phase diagram study for the AlN-Al2O3-CaO system and application of thermodynamic calculations to AlN sintering process J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-06 Byeongtae Chae, In-Ho Jung
In this study, the phase diagram of the AlN-AlO-CaO system at 1600 °C was experimentally investigated using the classical equilibration and quenching technique. The liquidus of CaO and AlN in the AlN-AlO-CaO system at 1600 °C was accurately determined for the first time using the mixture of pre-melted CaO-AlO glass, CaO and AlN powder as the starting materials under the N-5 vol% H atmosphere. The accuracy
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Spectrum regulation of LuAG:Ce phosphor ceramic with Gd doping for high-brightness and high-power yellow-emitting LEDs applications J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-06 Junrong Ling, Youfu Zhou, Chensheng Lin, Haitao Zhang, Wentao Xu, Maochun Hong
To realize the high-brightness of yellow light-emitting diodes (LEDs), the yellow-emitting phosphor ceramics with high luminous efficiency (LE) are urgently explored. Based on the idea of spectrum regulation, the LuGdAlO:Ce (LuGdAG:Ce) phosphor ceramics were prepared via vacuum solid-state sintering. The effect of Gd and Ce content on the structure, luminescence and thermal properties of LuAG:Ce ceramics
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Microstructure and thermoelectric properties of porous CaMnO3/CaMn2O4 composite prepared by spray solution combustion synthesis J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-05 Zhanna Yermekova, Evgeniya Chernyshova, Sergey Roslyakov, German Trusov, Efim Argunov, Stanislav Yurlov, Dmitry Moskovskikh, Sergey Yudin
Oxides are attractive and promising compounds for application as thermoelectric materials owing to thermal and chemical stability, cost-effectiveness, and environmental safety. In this work, CaMnO perovskite hollow spheres were synthesized by spray solution combustion synthesis. The effect of the fuel glycine on the phase composition, morphology, and microstructure of CaMnO was studied, and the influence
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3D-printed photocatalytic scaffolds of BiVO4 by direct ink writing for acetaminophen mineralization J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-04 Manuel Alejandro Ávila-López, Francisco E. Longoria-Rodríguez, Tania E. Lara-Ceniceros, M.A. Garza-Navarro, José Bonilla-Cruz
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Ablation resistant behavior of silicide modified HfB2-SiC coating on graphite by spark plasma sintering: Role of MeSi2 addition J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-04 Menglin Zhang, Dou Hu, Qiangang Fu
The silicides (MeSi, Me = Ta, Zr, W, Mo) with strong Si supply capability are promising for improving the loose and porous HfO skeletons from ablation resistant coatings for carbon-based materials. Herein, MeSi modified HfB-SiC coatings prepared by spark plasma sintering were evaluated under oxyacetylene ablation condition (2.4 MW/m) to analyze the protection mechanism. Experimental and theoretical
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Two K20 microwave dielectric ceramics SrLnAlO4 (Ln = Eu, Gd) with near-zero τf and contrasting Q×f J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-04 Sijie Wang, Weishuang Fang, Daofu Wu, Kuiyi Meng, Ying Tang, Junfeng Yang, Mingjian Ding, Huixing Lin, Liang Fang
K20 microwave dielectric ceramics SrLnAlO (Ln = Eu, Gd, and Ho) were prepared at 1440–1520 °C. SrEuAlO and SrGdAlO crystallized into tetragonal KNiF-type structures. While SrHoAlO was a mixture (SrHoAlO, HoO, and SrHoAlO) due to the too-small radius of Ho to bond in [HoO] dodecahedron. SrEuAlO and SrGdAlO exhibited near-zero values of +1.7 and +4.3 ppm/°C and low (19.37 and 19.14) along with contrasting
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Structural, magnetic, and thermal properties of 3D-printed porous Y−Ba−Cu−O superconductors J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-04 Paweł Pęczkowski, Zhichao Zhang, Ryszard Zalecki, Cezariusz Jastrzębski, Jarosław Piętosa, Piotr Zachariasz, Miguel Brito, Jarosław Więckowski, Jan Marek Michalik, Isabel Maria Merces Ferreira, Łukasz Gondek
YBCO openwork structures were 3D-printed as cuboids with 4.5 × 4.5 × 2 mm dimensions and various filling degrees. Initial pycnometric data showed a slight variation in specimen densities (∼6.153 g/cm), proving the production process uniformity. The consistency of superconducting YBCO phase (Y-123) was confirmed by Raman spectroscopy, X-ray diffraction and X-ray absorption spectroscopy. Microstructural
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Rapid thermal process for fabricating α-alumina tight ultrafiltration membrane with narrow pore size distribution J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-04 Weida Shi, Zhihao Jin, Juanjuan Wen, Xianfu Chen, Kaiyun Fu, Xiaowei Da, Minghui Qiu, Yiqun Fan
The development of tight ceramic ultrafiltration membranes for water purification facilitates is challenging because of high fabrication costs and low permeate flux. In this study, a low-energy rapid thermal process (RTP) was comprehensively investigated for fabricating of high-precision, permeable α-alumina tight ultrafiltration membranes. Compared to the conventional thermal process (CTP), RTP offers
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High-temperature oxidation and nitridation of substoichiometric zirconium carbide in isothermal air J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-04 Matthew T. Konnik, Trey Oldham, Allison Rzepka, Vincent Le Maout, Kelly A. Stephani, Francesco Panerai
The influence of nitrogen on the oxidation behavior of hot-pressed zirconium carbide was investigated using a flow-tube furnace at temperatures ranging from 1000 to 1600 °C. Mass gain, oxide formation characteristics, and oxide transitions were evaluated at various experimental conditions. Differences in oxidation behavior across the range of temperatures investigated show both kinetic and microstructural
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How does cold sintering affect the microstructural evolution of high-entropy pyrochlore during pressureless sintering? J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-04 Zixu Chen, Qing-Qiao Fu, Guoliang Zhao, Jinmao He, Hui Gu, Chen Xu
The challenge of producing dense fine-grained high-entropy ceramics is hereby addressed by a combined cold and conventional pressureless sintering method for the first time. It provides nearly fully dense high-entropy pyrochlores with better microstructural homogeneity, and only half the grain size of conventional pressurelessly sintered samples with identical density. Both the finer and more homogeneous
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Maximization of the blue-white contrast of ancient porcelain decorations from Jingdezhen imperial kiln by Co-spinel formation J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-02 Xiaolong Li, Weixia Dong, Qifu Bao, Yulong Yang, Tiangui Zhao, Li Liu, Jianer Zhou
By analyzing the chromaticity values of the ancient blue-and-white porcelain combined with the imitated experiment, the color information is quantified and ‘color dispersion’ mechanism is clarified. Energy Dispersive X-Ray Fluorescence (EDXRF), field emission scanning electron microscopy (FE-SEM), the advanced focused ion beam transmission electron microscopy (FIB-TEM) technique, etc, were used to
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A study on the thermal conductivity of proton irradiated CVD-SiC and sintered SiC, measured using a modified laser flash method with multi-step machining J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-02 Han Liu, Zhenfei Chai, Kerui Wei, Samir de Moraes Shubeita, Paul Wady, Daniel Shepherd, Enrique Jimenez-Melero, Ping Xiao
CVD-SiC and sintered SiC (SPS-SiC) were proton irradiated at 340 ̊C receiving different levels of damage (0.05–0.25 dpa). A novel multi-step machining and measurement method using laser flash analysis (LFA) was developed to derive the thermal conductivity of the irradiated layer (∼46 µm). Before irradiation, the thermal conductivity of SPS-SiC was much lower than CVD-SiC, primarily due to its higher
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Response to internal pressure shock and hoop strength of SiCf/SiC cladding J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-02 Ze-Xi Zhang, Jun-Hao Guan, Jia-Pei Chen, Yun Li, Yang-Qing Liu, Chuang-Tian Zhan, Li-Xiang Wu, Wei-Ming Guo, Shi-Kuan Sun, Jia-Xiang Xue, Hua-Tay Lin
This study investigated the mechanical behavior of silicon carbide fiber-reinforced silicon carbide matrix (SiC/SiC) cladding using expanding plug tests at 0.5 and 2 mm/min. A three-stage mechanical response for SiC/SiC was observed, with significant differences in Stage 3 between specimens tested at different rates. Specimens tested at the slower rate (0.5 mm/min) exhibited a characteristic hoop strength
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Suppressed bipolar effect and high average ZTave in CuO-doped Bi0.46Sb1.54Te3 bulks with a large size J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-01 Kaiwen Zhao, Mengyao Li, Zengguo Tian, Yingjiu Zhang, Hongzhang Song
Currently, bismuth telluride-based zone-melted ingots dominate the commercial thermoelectric (TE) market. However, bismuth telluride-based zone-melted ingots with a layered lattice structure are brittle, posing challenges for their application in miniature devices. Their polycrystalline alloys have robust mechanical strength. However, the electrical conductivity of a -type polycrystalline BiSbTe alloy
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Dual plate-like grains of (Ti, Zr)B2 and W2B5 toughened solid solution composites fabricated via in-situ reaction spark plasma sintering of (Ti, W)C and ZrB2 powders J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-01 Boxin Wei, Wei Jiang, Dong Wang, Liwei Wang, Lei Chen, Yujin Wang
Novel dual plate-like grains of (Ti, Zr)B and WB toughened solid solution composites were fabricated by the reaction spark plasma sintering at 1800 °C using (Ti, W)C and ZrB powders. The composites were predominated and composed of the (Zr, Ti, W)C solid solutions and plate-like (Ti, Zr)B. In the (Ti, W)C-ZrB reaction system, W promotes the anisotropic growth of (Ti, Zr)B grains, while Ti makes the
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Low permittivity MgF2-LiF ceramics with ultra-low dielectric loss for ULTCC applications J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-04-01 Mo Wei, Meng Fei Zhou, Bing Liu, Cheng Chao Hu, Yu Hua Cheng, Kai Xin Song
In this work, MgF–wt%LiF ( = 0.5, 1.0, 2.5, 4.0, 5.0) ceramics have been prepared through the standard solid-state reaction method. X-ray diffraction patterns and scanning electron micrographs revealed the successful preparation of dense MgF–LiF composite ceramics at an exceptionally low sintering temperature range of 525–600°C. The optimal microwave dielectric properties ( = 5.09 ± 0.03, = 100,733
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Young’s modulus and damping of partially sintered potassium sodium niobate (KNN) ceramics and its temperature dependence determined via the impulse excitation technique (IET) J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-30 Soňa Hříbalová, Lucie Kotrbová, Eva Gregorová, Anna Mašlová, Vojtěch Nečina, Petra Šimonová, Willi Pabst
Potassium sodium niobate (KNN) is suitable for the preparation of lead-free piezoelectric ceramics, and thus the elastic properties and damping behavior should be reliably known for practical applications. In this work we compare partially sintered KNN ceramics prepared by uniaxial and conventional sintering from three different KNN powders and show that the impulse excitation technique (IET) is perfectly
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Magnetocaloric properties of bulk Fe2AlB2 synthesized by reactive hot isostatic pressing J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-29 Hugo R. da Igreja, Sophie Tencé, Patrick Chartier, Sylvain Dubois
This study presents a new single-step synthesis of FeAlB at 1150°C for 4 hours using hot isostatic pressing (HIPing). X-ray diffraction confirmed the material as single-phase, while metallographic etching revealed predominant equiaxial FeAlB grains (∼25 μm) and minor unreacted boron particles and Al-rich zones at grain boundaries. Magnetocaloric investigations demonstrated an impressive isothermal
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Reactive deposition of CYSZ coatings using PS-PVD technology J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-29 Xin Li, Xin Wang, Shaopeng Niu, Chunming Deng, Xiaofeng Zhang
CYSZ (CeO-YO-ZrO) coatings were prepared via PS-PVD (plasma spray physical vapor deposition) using untreated YSZ and CeO blend powders instead of commercially CYSZ powders. 8YSZ was mixed with different proportions of CeO (10, 20and 30 wt%). CYSZ agglomerated composite powders were then produced via spray drying and CYSZ coatings were deposited through PS-PVD spraying. Microstructures of composite
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Effects of hydrogen-helium ions irradiation on Ti3SiC2-containing interphase or coating in SiCf/SiC J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-28 Jinsong Yang, Fang Ye, Laifei Cheng, Kai Zhao, Yucong Wei
This work investigates the effects of irradiation on TiSiC-containing interphase or coating in SiC/SiC using a cooperative experiment involving H and He ions. SiC/TiC/TiSiC/TiSiC and SiC/TiSiC were irradiated at room temperature and then annealed at 320 °C for 24 h. Results showed the lattice swelling in all phases. With increasing irradiation dose, SiC and TiSiC underwent amorphization, while TiC
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High-temperature broadband infrared radiation from rare earth monosilicate-based ceramics J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-28 Shuqi Wang, Yaming Wang, Guoliang Chen, Haipeng Zhang, Yongchun Zou, Zhiyun Ye, Jiahu Ouyang, Dechang Jia, Yu Zhou
How to maximize the extraction of heat by infrared radiation while reducing the thermal conductivity to prevent heat transfer is the main challenge of radiative thermal management for emerging industrial and aerospace applications. Herein, we reported a high-temperature broadband high emissivity (YLu)SiO ceramic with emissivity above 0.9 at room temperature and above 0.61 at elevated temperature of
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Design, synthesis and characterization of multilayer environmental barrier coatings J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-27 Daniele Casari, Xavier Maeder, Dianying Chen, Beno Widrig, Jürgen Ramm
The formation of cristobalite thermally grown oxides (TGO) is a major life limiting factor for environmental barrier coatings (EBCs) with Si bond coat exposed to high temperature steam environments due to its reversible phase transformation and the resultant cracking behaviour during thermal cycling. Therefore, controlling or avoiding cristobalite TGO formation by engineering coating chemistry and
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Effects of polymer-derived ZiC interlayer on mechanical properties and ablation performance of C/C-ZiC-ZrC-SiC composites prepared by RMI J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-27 Tonghui Wen, Qingbo Wen, Li Lu, Yalei Wang, Tianxing Jiang, Jinrun Hu, Yi Zeng, Xiang Xiong
C/C-ZiC-ZrC-SiC composites were prepared by a combination of PIP (polymer infiltration & pyrolysis) and RMI (reactive melt infiltration) processes on porous C/C composites. The PIP is used for preparing a ZrC-SiC interlayer (denoted as ZiC) between the C/C composites and ZrC-SiC matrix prepared by RMI. Mechanical properties and microstructure of the composites with and without ZiC were characterized
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Novel ceramic supports for catalyst with hierarchical pore structures fabricated via additive manufacturing-direct ink writing J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-26 Dong Lao, Yan Zhang, Ruoyu Chen, Saisai Li, Lingfeng Huang, Bo Wang, Wenbao Jia
The use of direct ink writing technology, combined with in-situ grown whiskers, has facilitated the development of 3D-printed ceramic catalyst supports-aluminum borate porous ceramics (ABPCs) with hierarchical pore structures. The optimal slurry consists of 0.2 wt% polycarboxylate, 19 wt% water addition, and 1.2 wt% sodium alginate. The most effective printing parameters are determined to be a 1.0 mm
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Pressureless two-step sintering of ultrafine-grained high-entropy zirconate ceramics with excellent mechanical properties J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-23 Chang Geng, Xinghua Su, Da Chen, Yu Li, Linlin Li, Jianglin Wang, Leichao Meng, Peng Zhao
The challenge of preparing dense ultrafine-grained high-entropy ceramics through conventional pressureless sintering is hereby addressed by a simple two-step sintering method. Ultrafine-grained (CeNdSmEuGd)ZrO high-entropy zirconate with 99.2 % theoretical density and 135 nm grain size has been fabricated by pressureless two-step sintering for the first time. Compared to the conventional sintering
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A novel protonic ceramic fuel cell with SrSn0.8Sc0.2O3-δ electrolyte J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-22 Xingkai Zhou, Bochang Shi, Xiaole Yu, Yaowei Mi, Bangze Wu, Zhexiang Yu, Han Chen, Yifeng Zheng, Lin Ge
The recent discovery of SrSnScO (SSS) perovskite oxide as a promising proton-conducting material has generated interest in its potential application in electrochemical devices as PCFCs. This study assesses the feasibility of SSS in PCFCs by its stability, density, chemical compatibility, and electrochemical performance. The study demonstrated the favorable stability of SSS even after reduction at 800 °C
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Effect of oxygen octahedral tilt on ferroelectric-antiferroelectric transition of PZT95/5 induced by hydrostatic pressure and electric field: A phenomenological thermodynamic analysis J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-20 Yujuan Peng, Yixuan Jiang, Xingzhe Wang
Ceramic PZT95/5 lies near the boundary between the ferroelectric and antiferroelectric phases and undergoes complex domain switching and various phase transitions in response to temperature, pressure, and electric fields. This phenomenon often leads to unusual performances, making it challenging to characterize and control the electromechanical properties of the material. In particular, the phase transition
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PrBaFe2O6-δ-based composites as promising electrode materials for protonic ceramic electrochemical cells J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-20 Danil E. Matkin, Maria A. Gordeeva, Artem P. Tarutin, Dmitry A. Medvedev
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Effect of Ba addition on the dielectric properties and microstructure of (Ca0.6Sr0.4)ZrO3 J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-20 Ying-Chieh Lee, Huei-Jyun Shih, Ting-Yang Wang, Christian Pithan
This study focuses on the synthesis and characterization of CaSrBaZrO (x = 0.01, 0.04, 0.07, and 0.10) ceramics prepared via the solid-state method and sintered at 1450 °C. The impact of Sr substitution by Ba at the A-site of the perovskite structure on crystalline properties and microwave dielectric performance was investigated. The experimental results show the formation of a single-phase structure
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Ablation and mechanical behaviour of C/C composites under an oxyacetylene flame and tensile loading environment J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-19 Lichao Song, Weihua Xie, Qiang Yang, Chenghai Xu, Fan Yang, Bo Gao, Songhe Meng
Carbon/carbon (C/C) composites impress with their excellent high-temperature mechanical properties. In this paper, in order to simulate the complex service conditions of aerocraft thermal protection systems, an experimental platform for simultaneous ablation and tension was designed. The mechanical and ablation properties of the C/C composites were tested under an oxyacetylene flame at heat flux of
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Two-step sintering technique of LATP ceramic electrolyte with enhanced key parameters J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-19 Xieyu Xu, Xingxing Jiao, Diancheng Zhou, Ilya I. Yakovlev, Pavel V. Evdokimov, Yangyang Liu, Valentin S. Volkov, Evgeny A. Goodilin, Irina A. Veselova, Valery I. Putlayev, Olesya O. Kapitanova
A new preparation technique of LiAlTi(PO) (LATP) ceramics is focused on optimisation of weight fractions of LATP glass additives into green ceramic powder followed by enhanced two-step sintering to improve key parameters of relative density and ionic conductivity of LATP solid-state electrolyte (SSE) pellets. The LATP SSE has been obtained with the relative density and ionic conductivity of (96.3±0
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MgAl2O4 spinel with transmittance approaching theoretical value at reduced sintering temperatures J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-19 Paulina Zubrzycka, Marta Radecka, Thomas Graule, Anita Trenczek-Zając, Dariusz Zientara, Michael Stuer
Magnesium aluminate spinel is known to be a material with a good combination of mechanical properties, resistance against chemical attack and a high melting point, being thus a very promising material for application as a transparent material in harsh, high-temperature environments where glass fails. To improve the control over the microstructural evolution during sintering, Eu, Y Mg and their combinations
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Fabrication of highly transparent yttria by DLP-based additive manufacturing J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-19 Sinuo Zhang, Imam Akbar Sutejo, Chang Woo Gal, Yeong-Jin Choi, Ha-Neul Kim, Young-Jo Park, Hui-suk Yun
High-quality transparent yttria (YO) is produced using various shaping techniques; however, the geometric control limits of shaping processes hinder its utilization and application. Thus, this study proposed digital light processing (DLP)-based additive manufacturing (AM). Although popular, transparent ceramic AM faces issues owing to limited transparency and simple shapes. This study fabricated a
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Enhancing sintered magnesia: Role of ZnO in densification, thermal conductivity, and corrosion resistance J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-16 Si Li, Xiang Li, Ziyang Yin, Wuyang Shi, Anxiu Wang, Liugang Chen, Chengliang Ma
This study introduces a method to reduce the thermal conductivity and boost cement clinker corrosion resistance in sintered magnesia using ZnO-modified additives. Solid-solution modified sintered magnesia was prepared at 1700 °C, and the impact of ZnO on the sintering properties, room-temperature strength, thermophysical properties, and corrosion resistance was assessed. ZnO addition enhanced the densification
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Synergistic strategy for enhancing the thermoelectric properties of Bi0.5Sb1.5Te3 with excess Te through low-temperature liquid phase sintering method J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-16 Wenhao Xie, Bo Zhu, Xianke Wu, Wei Cao, Ziyu Wang
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Preparation high-performance SiC ceramic reinforced with 3D hybrid graphene oxide-carbon nanotube by direct ink writing and liquid silicon infiltration J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-16 Haichao Xu, Yong Liu, Kan Wang
This paper proposes the preparation of a silicon carbide ceramic matrix composite toughened with three-dimensional graphene oxide-carbon nanotubes (3D GO-CNT) using direct ink writing and liquid silicon infiltration processes. The research focuses on the microstructure and mechanical properties of the composite, emphasizing the toughening impact of varied GO-CNT ratios. When the GO-CNT ratio was 1:2
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Probing ballistic photovoltaic currents in Bi6-xPrxTi3Fe2O18 multiferroics J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-16 Penju Zhao, Chunyan He, Yating Su, Yebin Zou, Yulong Bai, Shifeng Zhao
Magnetic field is used to explore the mechanism of ferroelectric-dynamic coupling in the photovoltaic effect, where the spin–orbit coupling gives rise to and the expansion of relaxation times for electron–hole pair recombination. Thus, phonons with spin-1 and spin-1/2 electrons can be regulated by the magnetic field, which contributes to ferroelectric photovoltaics. The ballistic photocurrents originate
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Influence of polyurethane skeleton on structural and superconducting properties of Y-123 foams J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-16 Paweł Pęczkowski, Piotr Zachariasz, Ryszard Zalecki, Jarosław Piętosa, Jan Marek Michalik, Cezariusz Jastrzębski, Michał Ziętala, Marcin Zając, Łukasz Gondek
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Stereolithography and gelcasting of Li2TiO3 block breeders with a Gyroid structure: Slurry optimization and performance evaluation J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-16 Hangyu Chen, Junyi Zhou, Yudong Cao, Baoping Gong, Xiaoyu Wang, Lei Yang, Jili Cai, Chao Cai, Yusheng Shi
This study proposes porous block structures as a viable alternative to conventional pebble bed structures, aiming to overcome the structural drawbacks including low packing fractions, extensive stress concentrations, and low thermal conductivity. To validate the feasibility of the porous block structures, Gyroid LiTiO block breeders were prepared by the hybrid process of stereolithography and gelcasting
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Low infrared emissivity of a Ti3AlC2 MAX ceramic for high-temperature thermal camouflage J. Eur. Ceram. Soc. (IF 5.7) Pub Date : 2024-03-15 Xiachen Fan, Shibo Li, Weiwei Zhang, Xuejin Zhang, Junji Mou
Thermal camouflage technology can effectively hide an object by lowering its infrared emissivity and reducing its surface temperature. So far, it has been a challenge to realize thermal camouflage at high-temperatures with a single material. Here, we report a TiAlC MAX phase material that exhibits excellent thermal camouflage properties from room temperature to 500 °C, and maintains a low emissivity