Journal of The European Ceramic Society最新文献_第4页

Phase tuning on BiCoO3 modified KNN ceramics with increased overall pyroelectric properties and high Curie temperature

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-15 DOI: 10.1016/j.jeurceramsoc.2025.117372

Leimin Wang , Cong Su , Yulan Liao , Hua Hao , Hanxing Liu

{"title":"Phase tuning on BiCoO3 modified KNN ceramics with increased overall pyroelectric properties and high Curie temperature","authors":"Leimin Wang , Cong Su , Yulan Liao , Hua Hao , Hanxing Liu","doi":"10.1016/j.jeurceramsoc.2025.117372","DOIUrl":"10.1016/j.jeurceramsoc.2025.117372","url":null,"abstract":"<div><div>Lead-free pyroelectric materials have always been a significant research focus in the field of pyroelectric materials. Numerous studies have achieved a high level of pyroelectric coefficient at room temperature. However, this improvement often comes at the expense of thermal stability. In this study, bismuth-based perovskites with low symmetry and large tetragonal distortion as dopants in KNN ceramics were proposed to enhance their pyroelectric properties. This approach not only resulted in ceramics with high pyroelectric coefficients at room temperature but also exhibited low dielectric constants and high Curie temperatures, indicating excellent figures-of-merit (FOMs) and thermal stabilities for these ceramics. Therefore, the (1-x)(K0.48Na0.52)0.97Li0.03Nb-xBiCoO3 ((1-x)KNLN-xBCO, x = 0, 0.005, 0.0075, 0.01, 0.0125) ceramics were investigated, achieving both high room-temperature pyroelectric properties (p = 6.298 × 10 −4 C·m −2·℃ −1, Fi = 3.159 × 10 −10 m·V−1, Fv = 4.538 × 10 −2 m2· C−1, Fd = 2.115 × 10 −5 Pa−1/2, Fe = 56.34 J·m−3·K−2) and a high Curie temperature of 413 ℃ for x = 0.01, demonstrating exceptional overall performance among KNN ceramics.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117372"},"PeriodicalIF":5.8,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644681","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

Porous Si3N4 ceramics with uniform microstructure fabricated by in-situ pre-gel casting combined with non-directional freeze-drying

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-14 DOI: 10.1016/j.jeurceramsoc.2025.117369

Heng Zhang , Dongxu Yao , Ming Zhu , Yongfeng Xia , Jun Zhao , Yu-Ping Zeng

引用次数: 0

Design of a functional steam electrode for Proton-conducting ceramic electrolysis cells based on BaCo0.4Fe0.4Zr0.2O3−δ : BaZr0.7Ce0.2Y0.1O3−δ composite

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-14 DOI: 10.1016/j.jeurceramsoc.2025.117348

Shivam Kumar Dwivedi , Laura-Alena Schaefer , Yuan Zeng , Yoo Jung Sohn , Jürgen Malzbender , Andreas Beyer , Celina Becker , Kerstin Volz , Norbert H. Menzler , Olivier Guillon , Mariya E. Ivanova , Ravi Kumar

{"title":"Design of a functional steam electrode for Proton-conducting ceramic electrolysis cells based on BaCo0.4Fe0.4Zr0.2O3−δ : BaZr0.7Ce0.2Y0.1O3−δ composite","authors":"Shivam Kumar Dwivedi , Laura-Alena Schaefer , Yuan Zeng , Yoo Jung Sohn , Jürgen Malzbender , Andreas Beyer , Celina Becker , Kerstin Volz , Norbert H. Menzler , Olivier Guillon , Mariya E. Ivanova , Ravi Kumar","doi":"10.1016/j.jeurceramsoc.2025.117348","DOIUrl":"10.1016/j.jeurceramsoc.2025.117348","url":null,"abstract":"<div><div>A key issue in the steam electrode development for Proton-conducting Ceramic Electrolysis Cells (PCECs) is the required contact with the electrolyte material as well as thermo-chemical compatibility during cell processing and operation. This study focuses on BaCo0.4Fe0.4Zr0.2O<math><msub><mrow></mrow><mrow><mn>3</mn><mo>−</mo><mi>δ</mi></mrow></msub></math> (BCFZ442) as a potential steam electrode material paired with the state-of-the-art proton conductor BaZr0.7Ce0.2Y0.1O<math><msub><mrow></mrow><mrow><mn>3</mn><mo>−</mo><mi>δ</mi></mrow></msub></math> (BZCY721). The objectives are to identify an optimal material composition amongst several compositional variations and to define its corresponding fabrication conditions for achieving suitable electrodes compatibility, adhesion and performance for further translation into the cell fabrication process. Therefore, we tested 90:10, 70:30 and 50:50 BCFZ442:BZCY721 composites which were heat-treated in the temperature of 800–1200 °C. The phase evolution accompanied by thermal and microstructural analyses and in addition to electrical and mechanical characterization yielded interesting results. Extensive analysis indicate compositional, functional and fabrication optimum in the steam electrode development of PCECs.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117348"},"PeriodicalIF":5.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679591","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

Determination of the completion point of the phase transformation based on reactive flash sintering behavior: A case study of LaCrO3

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-13 DOI: 10.1016/j.jeurceramsoc.2025.117366

Ming Li , Lili Guan , Yunshuo Zhu , Yanrui Shi , Yarong Huang , Xiwen Song

{"title":"Determination of the completion point of the phase transformation based on reactive flash sintering behavior: A case study of LaCrO3","authors":"Ming Li , Lili Guan , Yunshuo Zhu , Yanrui Shi , Yarong Huang , Xiwen Song","doi":"10.1016/j.jeurceramsoc.2025.117366","DOIUrl":"10.1016/j.jeurceramsoc.2025.117366","url":null,"abstract":"<div><div>The phase formation and densification of LaCrO3 were successfully achieved through AC reactive flash sintering (AC-RFS) in one step at a constant temperature of 600°C, using La2O3 and Cr2O3 as raw materials. The current density curve ‘buffer region’ was discovered under different electric field strengths. The ‘buffer region’ corresponds to the phase transformation from the intermediate phase La2CrO6 to the target product LaCrO3. Joule heating and a high heating rate resulted in nearly full densification of the LaCrO3 ceramic central region sintered for 1 second at maximum current density. In particular, the behavior of LaCrO3 was analyzed, and the phase transformation completion point was evaluated based on the RFS behavior without the need for complex testing methods. The discovery of the ‘buffer region’ provides experimental guidance for determining the phase transformation completion points of various other materials in RFS experiments.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117366"},"PeriodicalIF":5.8,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642536","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

Structural design of the multi-layer SiC nanofiber composite aerogel felt for applications in high-temperature thermal-insulating refractories

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-13 DOI: 10.1016/j.jeurceramsoc.2025.117370

Jinyu Guo, Jianjun Chen, Jinxia Li, Hafsa, Hao Chen

引用次数: 0

Effects of W contents on the oxidation resistance of (Zr, Hf, Nb, Ta, W)C high-entropy carbides at 800–1200 °C

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-13 DOI: 10.1016/j.jeurceramsoc.2025.117367

Weilu Gong , Yiming Yang , Ziwei Li , Li Ye , Haifeng Cui , Weijian Han , PingXia Zhang , Tong Zhao , Teng Chen

{"title":"Effects of W contents on the oxidation resistance of (Zr, Hf, Nb, Ta, W)C high-entropy carbides at 800–1200 °C","authors":"Weilu Gong , Yiming Yang , Ziwei Li , Li Ye , Haifeng Cui , Weijian Han , PingXia Zhang , Tong Zhao , Teng Chen","doi":"10.1016/j.jeurceramsoc.2025.117367","DOIUrl":"10.1016/j.jeurceramsoc.2025.117367","url":null,"abstract":"<div><div>Oxidation resistance of high-entropy carbides is a critical property considering their possible applications in harsh environments. In this work, the oxidation resistance of non-equimolar (Zr, Hf, Nb, Ta, W)C high-entropy carbides (HECCs-W) containing different W content was studied. The results showed that the antioxidation property of the HECCs-W was affected by both W content and oxidation temperature. In-situ oxidation monitoring by high temperature X-ray diffractometer and theoretical calculation results found delayed oxidation effect of W atoms. Combining morphology analysis and phase compositions of the oxide layers, we concluded that the content of W and its oxidation rate at different temperature affected the content of (Nb, Ta, Zr, Hf)xWyOz in the oxide layer, which substantially affected the morphology of the oxide layer, for (Nb, Ta, Zr, Hf)xWyOz usually had a low or negative thermal expansion coefficient. And the morphology of the oxide layer consequently decided the oxidation resistance of the HECCs-W.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117367"},"PeriodicalIF":5.8,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628315","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

Synergetic effect of oxygen vacancy and Cr triggered super-long persistent luminescence in green Ce, Cr: YAGG transparent ceramics

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-12 DOI: 10.1016/j.jeurceramsoc.2025.117364

Zihan Zhou , Tianyuan Zhou , Dongshun Chen , Hongsen Wang , Lele Xu , Enjin Liu , Yuhua Wang , Zhongzhi Wang , Wieslaw Strek , Qiufeng Xu , Hao Chen , Le Zhang

{"title":"Synergetic effect of oxygen vacancy and Cr triggered super-long persistent luminescence in green Ce, Cr: YAGG transparent ceramics","authors":"Zihan Zhou , Tianyuan Zhou , Dongshun Chen , Hongsen Wang , Lele Xu , Enjin Liu , Yuhua Wang , Zhongzhi Wang , Wieslaw Strek , Qiufeng Xu , Hao Chen , Le Zhang","doi":"10.1016/j.jeurceramsoc.2025.117364","DOIUrl":"10.1016/j.jeurceramsoc.2025.117364","url":null,"abstract":"<div><div>Ce, Cr: Y3Al2Ga3O12 (Ce, Cr: YAGG) as a new long afterglow material has a considerable developing potential in the fields of emergency indicator, optical information storage and bio-imaging, etc. However, short afterglow duration time and low afterglow brightness have become the key bottlenecks hindering its real applications. In this study, a high initial brightness of 6243.5 mcd/m2 and a long duration time of nearly 30 h were obtained in Ce, Cr: YAGG transparent ceramics (after being excited by a 460 nm Xe lamp for 10 min). The afterglow performances of Ce, Cr: YAGG ceramic could be significantly promoted by elevating sintering temperature, applying TEOS as sintering additive and adopting HIP sintering. More oxygen vacancies (relative amount of 32.9 %) within ceramic, compared to vacuum sintering (16.1 %), and Si induced charge compensation of Cr synergetically reinforced afterglow performance of ceramic, while ceramic transparency had a negative impact on it. A competition relationship between the “volume effect” and “light-extraction effect” was revealed in the thick and transparent afterglow medium. A new design strategy for enhancing afterglow performances of long afterglow transparent ceramics was proposed in this study.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117364"},"PeriodicalIF":5.8,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621369","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

Hexagonal boron nitride ceramic reinforced with a dispersed glass phase and microdomain-extruded glass fibers

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-11 DOI: 10.1016/j.jeurceramsoc.2025.117362

Yongheng Zhang , Jixin Chen , Hao Zhang , Guorui Zhao , Zhihui Li , Xiaohui Wang , Fei Li

{"title":"Hexagonal boron nitride ceramic reinforced with a dispersed glass phase and microdomain-extruded glass fibers","authors":"Yongheng Zhang , Jixin Chen , Hao Zhang , Guorui Zhao , Zhihui Li , Xiaohui Wang , Fei Li","doi":"10.1016/j.jeurceramsoc.2025.117362","DOIUrl":"10.1016/j.jeurceramsoc.2025.117362","url":null,"abstract":"<div><div>Hexagonal boron nitride (h-BN) is an important engineering ceramic material. However, its layered structure and poor sinterability often result in suboptimal mechanical properties. In this study, h-BN was simultaneously reinforced with a dispersed ytterbium aluminosilicate (YbAS) glass phase and novel in situ microdomain-extruded glass fibers. In situ–formed glass fibers play a vital role in enhancing the composite’s mechanical properties. h-BN/30 vol% YbAS composite sintered at 1600°C showed optimal mechanical properties, with flexural strength, compressive strength, fracture toughness, and elastic modulus of 436 ± 59 MPa, 1072 ± 86 MPa, 4.2 ± 0.3 MPa·m1/2, and 90.2 ± 0.1 GPa, respectively. The strengthening mechanisms include the co-reinforcement effect, mechanical locking provided by the YbAS glass fibers, and robust interfacial bonding between the h-BN grains and the YbAS glass phase. The proposed novel microstructural design offers a promising pathway for strengthening ceramic performance.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117362"},"PeriodicalIF":5.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611193","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

Toward more performant eye safe lasers: Effect of increasing sensitizer amount in Yb3 +,Er3+:YAG transparent ceramic on its spectral characteristics

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-11 DOI: 10.1016/j.jeurceramsoc.2025.117365

Agnieszka Szysiak , Robert Tomala , Helena Węglarz , Juraj Kajan , Mirosław Słobodzian , Mykhailo Chaika

{"title":"Toward more performant eye safe lasers: Effect of increasing sensitizer amount in Yb3 +,Er3+:YAG transparent ceramic on its spectral characteristics","authors":"Agnieszka Szysiak , Robert Tomala , Helena Węglarz , Juraj Kajan , Mirosław Słobodzian , Mykhailo Chaika","doi":"10.1016/j.jeurceramsoc.2025.117365","DOIUrl":"10.1016/j.jeurceramsoc.2025.117365","url":null,"abstract":"<div><div>Developing efficient Er3+,Yb3+:YAG eye-safe lasers is a priority of modern laser technology. This paper focuses on the influence of the concentration of Yb3+ ions on the spectroscopic properties of Er3+,Yb3+:YAG transparent ceramics. Four samples with different concentrations of Yb3+ ions were prepared by solid-state reaction sintering. The study revealed the influence of Yb3+ ions on the microstructure and the sintering process. A high concentration of Yb3+ ions leads to the formation of Y3+-rich impurity phases and causes segregation of Er3+ and Yb3+ and Si4+ into these phases. The influence of Yb3+ ions on the shape of emission spectra and the lifetimes of both Er3+ and Yb3+ ions was shown. Changes in the spectroscopic properties were ascribed to increase in neat transfer between Yb3+ and Er3+ ions. IQE of Er3+ and Yb3+ luminescence were calculated, and optimal Er3+/Yb3+ ions ratio were proposed.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117365"},"PeriodicalIF":5.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678929","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

Fabrication of Al2O3-Y3Al5O12-ZrO2 composites by single-step spark plasma sintering

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-03-11 DOI: 10.1016/j.jeurceramsoc.2025.117358

Maryam Vakhshouri , Ali Talimian , Aliasghar Najafzadehkhoee , Ángela Gallardo-López , Rosalía Poyato , Felipe Gutiérrez-Mora , Dušan Galusek

引用次数: 0