Journal of The European Ceramic Society最新文献

In situ formation of Yb2Ti2O7 secondary phase at grain boundaries for synergistically enhanced resistance against reduction and dielectric stability in BaTiO3 ceramics 在晶界处原位形成Yb2Ti2O7二次相，协同增强了BaTiO3陶瓷的抗还原性和介电稳定性

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-10-22 DOI: 10.1016/j.jeurceramsoc.2025.117912

Xingzhong Liu, Manting Zeng, Hua Hao, Zhonghua Yao, Hanxing Liu

{"title":"In situ formation of Yb2Ti2O7 secondary phase at grain boundaries for synergistically enhanced resistance against reduction and dielectric stability in BaTiO3 ceramics","authors":"Xingzhong Liu, Manting Zeng, Hua Hao, Zhonghua Yao, Hanxing Liu","doi":"10.1016/j.jeurceramsoc.2025.117912","DOIUrl":"10.1016/j.jeurceramsoc.2025.117912","url":null,"abstract":"<div><div>This study proposes a novel grain-boundary engineering strategy that synergistically enhances both resistance against reduction and dielectric stability in BaTiO3-based ceramics sintered under reducing atmosphere. By constructing uniform 2–3 nm Yb2O3 coatings on 100 nm BaTiO3 particles via chemical co-precipitation, we achieve in situ formation of Yb2Ti2O7 pyrochlore phases at grain boundaries during sintering. Unlike conventional solid-state processed counterparts, the grain-boundary-confined Yb2Ti2O7 phases exhibit dual functional mechanisms: Zener pinning-induced ultrafine grain refinement, and lattice mismatch-generated compressive stress that stabilizes the pseudocubic phase. These coupled effects synergistically elevate carrier migration activation energies, enabling ultrahigh resistivity (7.91 ×1010 Ω·cm) and exceptional resistance against reduction. Simultaneously, the synergy between stress and the grain structure refines ferroelectric domains to the nanoscale, thereby activating strong relaxor behavior that enhances dielectric stability. Consequently, the engineered ceramic simultaneously delivers X7R-compliant thermal stability (ε25℃=1623, tanδ =0.76 %) and minimal DC bias dependence (∆εᵣ/ε0 = 4.2 % at 0–2 V/µm).</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 4","pages":"Article 117912"},"PeriodicalIF":6.2,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145340510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Li2CO3-B2O3-SiO2-CaO-Al2O3 glass-modified Ba3Ti3.91(Ni1/3Nb2/3)0.09Nb4O21 microwave dielectric ceramics for frequency-controlled beam application Li2CO3-B2O3-SiO2-CaO-Al2O3玻璃改性Ba3Ti3.91(Ni1/3Nb2/3)0.09Nb4O21微波介质陶瓷的调频波束应用

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-10-17 DOI: 10.1016/j.jeurceramsoc.2025.117910

Leling Chen , Tingting Tang , Chaoyang Li , Jian Shen

{"title":"Li2CO3-B2O3-SiO2-CaO-Al2O3 glass-modified Ba3Ti3.91(Ni1/3Nb2/3)0.09Nb4O21 microwave dielectric ceramics for frequency-controlled beam application","authors":"Leling Chen , Tingting Tang , Chaoyang Li , Jian Shen","doi":"10.1016/j.jeurceramsoc.2025.117910","DOIUrl":"10.1016/j.jeurceramsoc.2025.117910","url":null,"abstract":"<div><div>Here, Ba3Ti3.91(Ni1/3Nb2/3)0.09Nb4O21 + Li2CO3-B2O3-SiO2-CaO-Al2O3 (BTN-NN + xwt%LBSCA, x = 0.25–1.25) ceramics are synthesized via the solid-phase method. The LBSCA glass successfully reduces the sintering temperature of the BTN-NN ceramic from 1250°C to below 960°C. The microwave dielectric properties are enhanced to εr = 51.9, Q×f =13092 GHz, and τf = +18.6 ppm/°C, respectively. The well-matched cofiring properties between the BTN-NN+xwt%LBSCA (x = 1.00) ceramic and Ag pastes are revealed. Based on this ceramic and silver, a frequency-controlled beam device (@5 mm × 5 mm × 1.28 mm) in the X-band is designed. This device can control the intensity and beam direction with frequency as the independent variable, and has a beam scanning space of 4.1° in the frequency range of 10.55–10.80 GHz while maintaining high reflectivity (≥ 0.5). This function is verified by far-field amplitude and phase. This work broadens the scope of application of microwave dielectric ceramics.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 3","pages":"Article 117910"},"PeriodicalIF":6.2,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D-printed SiZrOC/hBN Moiré pattern structures with macroscopic ultralow friction and wear 3d打印具有宏观超低摩擦磨损的SiZrOC/hBN波纹图案结构

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-10-17 DOI: 10.1016/j.jeurceramsoc.2025.117909

Yu Zhao , Xinyi Zhang , Peng Chang , Yubo Yang , Hui Mei

{"title":"3D-printed SiZrOC/hBN Moiré pattern structures with macroscopic ultralow friction and wear","authors":"Yu Zhao , Xinyi Zhang , Peng Chang , Yubo Yang , Hui Mei","doi":"10.1016/j.jeurceramsoc.2025.117909","DOIUrl":"10.1016/j.jeurceramsoc.2025.117909","url":null,"abstract":"<div><div>Ceramics demonstrate irreplaceable advantages for lubrication under extreme environments. However, developing advanced ceramic-based lubricating materials with macroscopic ultralow friction and wear remains challenging. Herein, by synergistically combining Zr-doped SiOC molecular modification and 3D printing technique, SiZrOC Moiré pattern structures featuring different rotation angles were developed. Specially, SiZrOC Moiré pattern structure with a rotation angle of 13.2° achieved outstanding tribological properties, maintaining a stable average coefficient of friction (COF) value of ∼ 0.2, as well as a low wear rate of 1.01 × 10−6 mm3ꞏN−1ꞏm−1, even under a normal load of 10 N. To realize macroscopic ultralow friction and wear, hBN lubricating coating was further applied to the optimal SiZrOC Moiré pattern structure, constructing SiZrOC/hBN Moiré structures. As expected, SiZrOC/hBN Moiré structures showed significant friction reduction, with an average COF value of 0.095. The exceptional lubrication performance could be ascribed to the combined effects of good flatness, small contact area and unique debris/lubricant storage capacity of Moiré pattern structures with fractal design, excellent wear-resistance ability of SiZrOC hard ceramic substrate, and superior easy-to-shear character of hBN soft lubricating layer. This study provides a promising avenue for accelerating the application of advanced ceramic-based lubricating materials in both industrial production and daily life.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 3","pages":"Article 117909"},"PeriodicalIF":6.2,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phase equilibria of Al2O3-SiO2-La2O3 system at 1873 K, 1773 K and 1673 K Al2O3-SiO2-La2O3体系在1873 K， 1773 K和1673 K处的相平衡

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-10-16 DOI: 10.1016/j.jeurceramsoc.2025.117908

Guojie Huo , Jiyu Qiu , Chengjun Liu

引用次数: 0

Structure evolution and high-temperature oxidation behavior of B-doped SiOC ceramic 掺b SiOC陶瓷的结构演化与高温氧化行为

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-10-15 DOI: 10.1016/j.jeurceramsoc.2025.117904

Xiumei Wu , Jianwei Teng , Yunping Li , Xiangming Chen , Shu Yu

引用次数: 0

Finely controlled graded porous Al2O3 ceramics with excellent gas permeability and mechanical properties 具有优异透气性和力学性能的分级可控多孔Al2O3陶瓷

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-10-15 DOI: 10.1016/j.jeurceramsoc.2025.117907

Xiaoyu Zhang , Hailu Wang , Hongxing Zhan , Yuanbing Li , Shujing Li , Nana Xu

引用次数: 0

Microstructural evolution of zirconium diboride irradiated with 5–10 MeV Au ions at room temperature and 570 °C 室温和570℃下5-10 MeV Au离子辐照二硼化锆的微观结构演变

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-10-15 DOI: 10.1016/j.jeurceramsoc.2025.117902

Narrie Loftus , José Olivares , Miguel Crespillo , Esther Enríquez Pérez , Jeremy Watts , Eric Bohannan , Gregory Hilmas , William Fahrenholtz , Joseph Graham

{"title":"Microstructural evolution of zirconium diboride irradiated with 5–10 MeV Au ions at room temperature and 570 °C","authors":"Narrie Loftus , José Olivares , Miguel Crespillo , Esther Enríquez Pérez , Jeremy Watts , Eric Bohannan , Gregory Hilmas , William Fahrenholtz , Joseph Graham","doi":"10.1016/j.jeurceramsoc.2025.117902","DOIUrl":"10.1016/j.jeurceramsoc.2025.117902","url":null,"abstract":"<div><div>Zirconium diboride was irradiated with 5 MeV Au2 + , 7 MeV Au4+ and 10 MeV Au3+ ions at room temperature and 570 °C to doses from 1 to 8 displacements per atom (dpa). Grazing incidence X-ray diffraction (GIXRD) analysis revealed no secondary phase formation. Rietveld analysis of the GIXRD data indicated an accumulation of microstrain at low dpa and room temperature. Dislocations observed in transmission electron microscopy (TEM) cross-sections are likely the main contributor to the microstrain. High dpa and high-temperature samples exhibit lower lattice distortion than lower dpa samples, suggesting the presence of enhanced defect recovery at elevated temperatures and dislocation annihilation at higher doses. Positron annihilation lifetime spectroscopy (PALS) analysis showed no conclusive evidence of void growth at either temperature. These findings provide insights into the microstructural response of ZrB2 to heavy ion irradiation, suggesting stability up to 8 dpa in typical reactor operating conditions.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 3","pages":"Article 117902"},"PeriodicalIF":6.2,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of pre-sintering on the reactive flash sintering of high-entropy rare earth zirconate ceramics 预烧结对高熵稀土锆酸盐陶瓷反应闪烧的影响

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-10-14 DOI: 10.1016/j.jeurceramsoc.2025.117901

Xinghua Su , Hui Zeng , Yangliu Tian , Xiao Deng , Qiang Tian , Chenqi Wang , Fanqing Liao

{"title":"Influence of pre-sintering on the reactive flash sintering of high-entropy rare earth zirconate ceramics","authors":"Xinghua Su , Hui Zeng , Yangliu Tian , Xiao Deng , Qiang Tian , Chenqi Wang , Fanqing Liao","doi":"10.1016/j.jeurceramsoc.2025.117901","DOIUrl":"10.1016/j.jeurceramsoc.2025.117901","url":null,"abstract":"<div><div>The influence of the pre-sintering on the reactive flash sintering of high-entropy (La0.2Nd0.2Sm0.2Eu0.2Gd0.2)2Zr2O7 ceramics was studied for the first time. The flash temperature was decreased by increasing the pre-sintering temperature. Moreover, the pre-sintering temperature had an influence on the grain size and bulk density of the flash sintered sample. Furthermore, the pre-sintering could effectively avoid the localization of current coupled with hot spot formation and crack formation, which leaded to “safe” reactive flash sintering. In addition, the crystal structure, grain size, and the bulk density of the flash sintered sample correlated with the imposed current limit. The resultant high-entropy ceramics exhibited superior hardness, fracture toughness, and aqueous durability, which is a promising immobilization material for high-level radioactive waste. The pre-sintering was proved to be an alternative option to regulate the reactive flash sintering behavior and microstructure of sample.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 3","pages":"Article 117901"},"PeriodicalIF":6.2,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing piezoelectric properties of PSN-PMN-PT ceramics through a synergistic design 通过协同设计提高PSN-PMN-PT陶瓷的压电性能

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-10-13 DOI: 10.1016/j.jeurceramsoc.2025.117900

Yifei Chen , Feifei Guo , Junyu Niu , Junjun Wang , Wei Long , Jie Wu , Li Jin , Jie Dong , Xiaojuan Li , Zengzhe Xi

{"title":"Enhancing piezoelectric properties of PSN-PMN-PT ceramics through a synergistic design","authors":"Yifei Chen , Feifei Guo , Junyu Niu , Junjun Wang , Wei Long , Jie Wu , Li Jin , Jie Dong , Xiaojuan Li , Zengzhe Xi","doi":"10.1016/j.jeurceramsoc.2025.117900","DOIUrl":"10.1016/j.jeurceramsoc.2025.117900","url":null,"abstract":"<div><div>This work employs a synergistic design strategy combining texture engineering and local structural heterogeneity to optimize the piezoelectric properties of ternary Pb(Sc1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PSN-PMN-PT) ceramics. The fabricated [001]C-oriented 1.5 mol.% Sm2O3 doped PSN-PMN-PT (1.5Sm-T) textured ceramics demonstrate a remarkably high F001 of up to 98.6 %, coupled with significantly improved dielectric and piezoelectric properties: d33∼1080 pC/N, εr∼2856, g33∼42.7 × 10−3 Vm/N, d33×g33∼46.1 × 10−12 m2/N, and d33*∼1375 pm/V@8 kV/cm. It is found that the high piezoelectric performance originates from the dual function of easy PNRs rotation induced by texturing engineering and increased heterogeneous polar regions caused by Sm3+ doping. Rayleigh analysis confirms that intrinsic contribution predominantly drives the high piezoelectric performance of 1.5Sm-T ceramics. The intrinsic piezoelectric coefficient <math><msubsup><mrow><mi>d</mi></mrow><mrow><mn>33</mn></mrow><mrow><mi>init</mi></mrow></msubsup></math>and its orientation dependence, as investigated by first-principles calculations, further verify that the design strategy combining Sm3+ doping and [001]C texturing is responsible for the high piezoelectric response theoretically. Our results demonstrate that 1.5Sm-T ceramics show great promise for electromechanical devices applications.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 3","pages":"Article 117900"},"PeriodicalIF":6.2,"publicationDate":"2025-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strong associations between composition and plasma ablation behavior in C/C-Hf1-xTaxC composites C/C- hf1 - xtaxc复合材料成分与等离子体烧蚀行为之间的密切联系

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-10-13 DOI: 10.1016/j.jeurceramsoc.2025.117899

Mingcong Qing , Qinchuan He , Yiqun Wang , Congmin Fan , Xuemin Yin

引用次数: 0