Journal of The European Ceramic Society最新文献_第10页

Impacts of P-site non-stoichiometry on the structure and properties of BaZnP2O7 ceramics P 位非化学计量对 BaZnP2O7 陶瓷结构和性能的影响

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-22 DOI: 10.1016/j.jeurceramsoc.2024.116938

{"title":"Impacts of P-site non-stoichiometry on the structure and properties of BaZnP2O7 ceramics","authors":"","doi":"10.1016/j.jeurceramsoc.2024.116938","DOIUrl":"10.1016/j.jeurceramsoc.2024.116938","url":null,"abstract":"<div><div>In this work, a series of P5+-enriched BaZnP2+xO7 ceramics were synthesized using the solid-state method at temperatures ranging from 825°C to 925°C. All ceramics exhibited a single triclinic phase. A suitable excess of P5+ promoted grain growth and densification, which also affected <math><msub><mrow><mi>ε</mi></mrow><mrow><mi>r</mi></mrow></msub></math> and <math><mrow><mi>Q</mi><mo>×</mo><mi>f</mi></mrow></math>. Subsequently, the relationship between total lattice energy and <math><mrow><mi>Q</mi><mo>×</mo><mi>f</mi></mrow></math> was explored, as well as the connection between total bond energy and <math><msub><mrow><mi>τ</mi></mrow><mrow><mi>f</mi></mrow></msub></math>. At 850°C, the BaZnP2.01O7 ceramics achieved a relative density of 97.7 % and demonstrated optimal properties: <math><msub><mrow><mi>ε</mi></mrow><mrow><mi>r</mi></mrow></msub></math>∼8.78, <math><mrow><mi>Q</mi><mo>×</mo><mi>f</mi></mrow></math>∼149,008 GHz, <math><msub><mrow><mi>τ</mi></mrow><mrow><mi>f</mi></mrow></msub></math>∼-28.92 ppm/°C. These ceramics present an outstanding combination of low <math><msub><mrow><mi>ε</mi></mrow><mrow><mi>r</mi></mrow></msub></math>, high <math><mrow><mi>Q</mi><mo>×</mo><mi>f</mi></mrow></math> and low sintering temperature, indicating their potential for application in Low-Temperature Co-fired Ceramics (LTCC) technology.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142327847","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

Dynamic creep of Al2O3 whisker-reinforced ZrO2 ceramic composite Al2O3 晶须增强 ZrO2 陶瓷复合材料的动态蠕变

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-21 DOI: 10.1016/j.jeurceramsoc.2024.116943

引用次数: 0

The effect of MgO addition on thermomechanical and electrical transport properties of La0.5Sr0.5FeO3–δ perovskite-like ferrite 添加氧化镁对 La0.5Sr0.5FeO3-δ 类包晶铁氧体的热力学和电输运特性的影响

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-21 DOI: 10.1016/j.jeurceramsoc.2024.116939

引用次数: 0

Solution infiltrated lanthanum nickelate–GDC composite cathode via flash-light sintering for intermediate temperature solid oxide fuel cells 用于中温固体氧化物燃料电池的闪速烧结溶液浸润镍酸镧-GDC 复合阴极

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-20 DOI: 10.1016/j.jeurceramsoc.2024.116937

{"title":"Solution infiltrated lanthanum nickelate–GDC composite cathode via flash-light sintering for intermediate temperature solid oxide fuel cells","authors":"","doi":"10.1016/j.jeurceramsoc.2024.116937","DOIUrl":"10.1016/j.jeurceramsoc.2024.116937","url":null,"abstract":"<div><div>Solid oxide fuel cells (SOFCs) require high operating temperatures to minimize the oxygen reduction reaction resistance at cathode and increase the ionic conductivity of oxygen. However, at high operating temperatures, their stability during long-term operation degrades because of material deterioration and the mutual chemical reactions occurring at the interfaces. Herein, an electrode–electrolyte composite is fabricated by solution infiltration of lanthanum nickelate (LNO) electrode material into a GDC electrolyte layer to ensure more reaction sites compared with the conventional powder mixing of the electrode and electrolyte material. Further, the conventional thermal sintering process is replaced with the flash-light sintering process. Thus, the performance of the LNO–GDC cathode cell manufactured by flash-light sintering improves owing to suppression of grain growth of the infiltrated LNO particles. The microstructures of the infiltrated solution and composite layer of the electrolyte material are analyzed using field-emission scanning electron microscopy, and the crystallinity of the LNO nanoparticles is analyzed using high-resolution transmission electron microscopy. A maximum power density of 1.1 W/cm2 is achieved, an improvement of 58 % over the LSCF cell without infiltration at 750 ℃. This study is expected to contribute to the commercialization of SOFCs by replacing conventional thermal sintering.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418427","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

Ga-ion migration during co-sintering of heterogeneous Ta- and Ga-substituted LLZO solid-state electrolytes 异质Ta和Ga取代的LLZO固态电解质共烧结过程中的镓离子迁移

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-20 DOI: 10.1016/j.jeurceramsoc.2024.116936

引用次数: 0

Effect of SiO2/AlOOH double-coated SiC powders on the properties of SiC ceramics by vat photopolymerization SiO2/AlOOH双涂层SiC粉末对大桶光聚合SiC陶瓷性能的影响

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-19 DOI: 10.1016/j.jeurceramsoc.2024.116933

{"title":"Effect of SiO2/AlOOH double-coated SiC powders on the properties of SiC ceramics by vat photopolymerization","authors":"","doi":"10.1016/j.jeurceramsoc.2024.116933","DOIUrl":"10.1016/j.jeurceramsoc.2024.116933","url":null,"abstract":"<div><div>Vat Photopolymerization (VPP) technology is expected to address the challenges of preparing high-strength, precise, and complex SiC ceramics. However, the poor printability of SiC powders and the low strength of the resulting SiC ceramics remain significant obstacles. To overcome these issues, this study proposes a SiO2/AlOOH double-coating method for modifying SiC powders. The effects of AlOOH content in the double coating on the properties of SiC powders, slurries, and ceramics were investigated. Additionally, the impact of sintering additives on the densification behavior and mechanical properties of SiC ceramics was examined. The results indicated that increasing the AlOOH content in the double coating decreased the UV absorption of the powders and increased the curing depth of the slurries, but also increased the viscosity of the pastes. Moreover, while increasing the AlOOH content in the double coating improved the densification and flexural strength of the ceramics, the effect was significantly less compared to optimizing the sintering additive. Using SiO2/AlOOH double-coated SiC powders containing 2.5 wt% AlOOH and 10 wt% Al2O3-Y2O3-MgO (mass ratio 1:8:1) sintering additives, SiC ceramics were prepared with a relative density of 91.1 ± 3.5 %, a Vickers hardness of 1685.6 ± 86.4 HV, and a flexural strength of 281.7 ± 14.4 MPa, much higher than that of other SiC ceramic prepared using the same process. This represents the highest flexural strength of SiC ceramics prepared by VPP technology to date, providing a new method for the preparation of high-strength SiC ceramics via VPP.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142312774","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

Enhanced piezoelectric properties of additively manufactured BCZT with an oriented ceramic lamellar structure formed via vat photopolymerization 增强通过槽式光聚合形成的具有定向陶瓷片层结构的添加制造 BCZT 的压电特性

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-19 DOI: 10.1016/j.jeurceramsoc.2024.116934

{"title":"Enhanced piezoelectric properties of additively manufactured BCZT with an oriented ceramic lamellar structure formed via vat photopolymerization","authors":"","doi":"10.1016/j.jeurceramsoc.2024.116934","DOIUrl":"10.1016/j.jeurceramsoc.2024.116934","url":null,"abstract":"<div><div>Advances in additive manufacturing have enabled the creation of piezoceramic materials with complex architectures. However, the lack of a clear structural design strategy limits their performance and application in high-performance piezoelectric transducer devices. This work outlines the additive manufacture of a novel sandwich architecture based on a porous (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 (BCZT) layer containing oriented ceramic lamellae. The d33 charge coefficients and g33 voltage coefficients of the optimized porous ceramic were 1.16 times and 2.11 times higher than those of the dense counterparts respectively. After electroding the aligned lamellar ceramic with an indium tine oxide film a piezoelectric sensor was obtained which, when subject to a pressure of 7.5 MPa, produced a open circuit voltage of 173 V. This paper provides a new structural design strategy to effectively improve the performance of piezoelectric ceramics, and provides new opportunites for the design and production of additive manufactured piezoelectric sensors and energy harvesting devices.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142312773","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 equilibrium investigations and thermodynamic modelling of the ZrO2-HfO2-Ta2O5 system ZrO2-HfO2-Ta2O5 体系的相平衡研究和热力学建模

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-19 DOI: 10.1016/j.jeurceramsoc.2024.116932

{"title":"Phase equilibrium investigations and thermodynamic modelling of the ZrO2-HfO2-Ta2O5 system","authors":"","doi":"10.1016/j.jeurceramsoc.2024.116932","DOIUrl":"10.1016/j.jeurceramsoc.2024.116932","url":null,"abstract":"<div><div>The phase equilibria in the ZrO2-HfO2-Ta2O5 system were studied at 1673 K and 1873 K by equilibration technique and in the temperature range up to 2473 K by differential thermal analysis (DTA). The phase and chemical composition of the samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX). Melting relations were studied by DTA followed by microstructural investigation by SEM/EDX. The composition dependence of the eutectic and peritectic temperatures was shown. The heat capacity of the (Zr,Hf)6Ta2O17 compound with different compositions was measured by differential scanning calorimetry (DSC) in three temperature ranges from 100 K to 230 K, from 220 K to 570 K, and from 330 K to 1295 K. Based on the obtained results and our previous thermodynamic descriptions, a database for the ternary ZrO2-HfO2-Ta2O5 system using the CALPHAD approach was created.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0955221924008057/pdfft?md5=623227e25858bd2f801433c3a389e0d2&pid=1-s2.0-S0955221924008057-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142312772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced high-temperature performance of selected high-entropy rare earth disilicates 增强特定高熵稀土二硅酸盐的高温性能

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-19 DOI: 10.1016/j.jeurceramsoc.2024.116931

{"title":"Enhanced high-temperature performance of selected high-entropy rare earth disilicates","authors":"","doi":"10.1016/j.jeurceramsoc.2024.116931","DOIUrl":"10.1016/j.jeurceramsoc.2024.116931","url":null,"abstract":"<div><div>First-principles calculations were utilized to evaluate the synthesis feasibility of (Yb0.2Y0.2Lu0.2Ho0.2Er0.2)2Si2O7, (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7, (Yb0.2Tm0.2Lu0.2Sc0.2Gd0.2)2Si2O7, and (Yb0.2Y0.2Lu0.2Sc0.2Gd0.2)2Si2O7, followed by their fabrication using the solid-phase reaction method. This study investigates the thermal properties of four novel high-entropy rare earth disilicates and compares them with Yb2Si2O7, a material known for its high-temperature stability. The aim was to explore the influence of high configurational entropy and small grain size on enhancing material properties that are critical in high-temperature applications. Key findings demonstrated that these high-entropy materials exhibit lower thermal conductivity, higher specific heat capacity, an0d reduced coefficient of thermal expansion compared to Yb2Si2O7. Among them, (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 and (Yb0.2Y0.2Lu0.2Ho0.2Er0.2)2Si2O7 have the lowest thermal conductivity and suitable CTE, making them the best choices for advanced thermal/environmental barrier coatings in high-temperature applications. Furthermore, the in-depth discussion in this study provides guidance for designing high-entropy rare earth disilicate materials with ideal CTE and thermal insulation properties.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323989","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

The CoNb2O6 pigments for brilliant-blue ceramic decoration at high temperatures over 1273 K 在 1273 K 以上高温条件下用于艳蓝陶瓷装饰的 CoNb2O6 颜料

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2024-09-19 DOI: 10.1016/j.jeurceramsoc.2024.116935

{"title":"The CoNb2O6 pigments for brilliant-blue ceramic decoration at high temperatures over 1273 K","authors":"","doi":"10.1016/j.jeurceramsoc.2024.116935","DOIUrl":"10.1016/j.jeurceramsoc.2024.116935","url":null,"abstract":"<div><div>To date, brilliant-blue pigments that can maintain outstanding stability in a corrosive environment over 1273 K are still very desirable in the ceramic industry. We systematically investigated the structural, optical, colorimetric and thermal properties of a novel type of CoNb2O6 pigments, which have the 6-fold coordinated Co2+ as chromophores and high-valent Nb5+ as the mainstay factor for structural stabilization. Effective coloring contribution from different visible-light regions, the coloration mechanism and thermal stability of the pigments applied in glaze at 1273–1473 K are revealed for the first time. The Co2+ cation at the distorted [CoO6] octahedra generates the brilliant blue hue, which can maintain the absolute blueness values, b*, at 30–44 even after glaze calcination at 1273–1423 K. The superb thermal performance in a harsh environment of the CoNb2O6 pigments significantly outperforms the classic CoAl2O4 blue, thereby exhibiting attractive prospects for high-end blue-sky–hued decoration for ceramics.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142312776","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