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

Ferroelectric polarization at grain boundaries and domain walls in multiferroic ε-Fe2O3 films 多铁ε-Fe2O3薄膜晶界和畴壁的铁电极化

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-06-08 DOI: 10.1016/j.jeurceramsoc.2025.117598

Shanshan Chen , Tingting Yao , Ang Tao , Qianqian Jin , Zhiqing Yang , Fang Liu , Yixiao Jiang , Xiu-Liang Ma , Hengqiang Ye , Chunlin Chen

{"title":"Ferroelectric polarization at grain boundaries and domain walls in multiferroic ε-Fe2O3 films","authors":"Shanshan Chen , Tingting Yao , Ang Tao , Qianqian Jin , Zhiqing Yang , Fang Liu , Yixiao Jiang , Xiu-Liang Ma , Hengqiang Ye , Chunlin Chen","doi":"10.1016/j.jeurceramsoc.2025.117598","DOIUrl":"10.1016/j.jeurceramsoc.2025.117598","url":null,"abstract":"<div><div>ε-Fe<sub>2</sub>O<sub>3</sub> is an attractive magnetoelectric multiferroic material that exhibits ferrimagnetism and ferroelectricity at room temperature and may find applications in next-generation information storage devices. Due to lack of suitable substrates, all the ε-Fe<sub>2</sub>O<sub>3</sub> films reported so far are polycrystalline and possess high-density grain boundaries (GBs) and domain walls (DWs). In this study, the atomic structures and ferroelectric polarization of GBs and DWs have been systematically investigated by aberration-corrected transmission electron microscopy. It is found that the polarization directions can be parallel or antiparallel across the GBs and the polarization strength can be enhanced or decreased across the GBs and DWs, which depend closely on the displacement vector and the terminating atomic plane of boundaries. These findings suggest that GBs and DWs play important roles in regulating the ferroelectric properties of ε-Fe<sub>2</sub>O<sub>3</sub>, thereby introducing fresh perspectives to tailor the ferroelectric properties by grain boundary engineering in magnetoelectric multiferroic materials.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117598"},"PeriodicalIF":5.8,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263299","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 variation of oxygen and cation vacancies in strontium titanate polycrystals flash-sintered under direct and alternating electric fields 直接电场和交变电场作用下钛酸锶多晶闪烧中氧和阳离子空位的变化

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-06-07 DOI: 10.1016/j.jeurceramsoc.2025.117611

Shunta Inagaki , Tomoharu Tokunaga , Kiyoshi Kobayashi , Takahisa Yamamoto

引用次数: 0

In-situ crack opening displacement of C/SiC under cyclic loading 循环荷载作用下C/SiC原位裂纹张开位移

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-06-06 DOI: 10.1016/j.jeurceramsoc.2025.117605

Longbiao Li

引用次数: 0

Fabrication, mechanical properties and ablation performance of SiCnw/PyC-C/C-HfC-SiC composites with a Si-rich coating via film boiling chemical vapor infiltration and gaseous silicon infiltration 富硅涂层SiCnw/PyC-C/C-HfC-SiC复合材料的制备、力学性能和烧蚀性能

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-06-06 DOI: 10.1016/j.jeurceramsoc.2025.117609

Yi Cao, Jinhua Lu, Zhaofan Zhou, Jiachen Meng, Ruoxi Zhang, Wenqi Liu, Hejun Li

引用次数: 0

Corrosion behaviors of non-equiatomic multicomponent monosilicates subjected to calcium-magnesium-alumino-silicate melts 非等原子多组分单硅酸盐在钙镁铝硅酸盐熔体中的腐蚀行为

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-06-06 DOI: 10.1016/j.jeurceramsoc.2025.117608

Siyu Hu , Xin Zhong , Fengwen Chen , Ruihui Liang , Xuemei Song , Xiaowu Chen , Yaran Niu , Xuebin Zheng

{"title":"Corrosion behaviors of non-equiatomic multicomponent monosilicates subjected to calcium-magnesium-alumino-silicate melts","authors":"Siyu Hu , Xin Zhong , Fengwen Chen , Ruihui Liang , Xuemei Song , Xiaowu Chen , Yaran Niu , Xuebin Zheng","doi":"10.1016/j.jeurceramsoc.2025.117608","DOIUrl":"10.1016/j.jeurceramsoc.2025.117608","url":null,"abstract":"<div><div>Rare-earth monosilicates environmental barrier coatings (EBCs) are attacked by severe calcium-magnesium-alumino-silicate (CMAS) corrosion during service. However, the CMAS corrosion resistance of silicates with a single rare-earth component is insufficient. Multi-component design is an important approach to improve the corrosion resistance of rare-earth monosilicates. In this work, four kinds of (nRE<sub>xi</sub>)<sub>2</sub>SiO<sub>5</sub> ((Yb<sub>0.8</sub>Er<sub>0.1</sub>Tm<sub>0.1</sub>)<sub>2</sub>SiO<sub>5</sub>, (Yb<sub>0.8</sub>Er<sub>0.1</sub>Y<sub>0.1</sub>)<sub>2</sub>SiO<sub>5</sub>, (Yb<sub>0.7</sub>Er<sub>0.1</sub>Tm<sub>0.1</sub>Ho<sub>0.1</sub>)<sub>2</sub>SiO<sub>5</sub>, and (Yb<sub>0.7</sub>Er<sub>0.1</sub>Tm<sub>0.1</sub>Y<sub>0.1</sub>)<sub>2</sub>SiO<sub>5</sub>) were synthesized to investigate their CMAS corrosion behaviors. The results indicated that the addition of RE with smaller ionic radii can improve the stability of crystal structure of monosilicates, and form rod-shaped apatite corrosion products, which interlaces to form a dense barrier layer. The Tm enrichment in CMAS can slow down the corrosion activity. After corrosion for 25 h, the corrosion layer for (Yb<sub>0.8</sub>Er<sub>0.1</sub>Tm<sub>0.1</sub>)<sub>2</sub>SiO<sub>5</sub> was thinnest and densest, demonstrating excellent CMAS corrosion resistance. The non-equiatomic multicomponent design provides an effective approach to regulate the corrosion performance of rare-earth silicates used as EBCs.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117608"},"PeriodicalIF":5.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263293","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

Oxidation behavior of monolithic boron containing SiC/(Hf0.5Ti0.5)C/C composites consolidated by SPS SPS固结整体含硼SiC/(Hf0.5Ti0.5)C/C复合材料的氧化行为

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-06-06 DOI: 10.1016/j.jeurceramsoc.2025.117607

Laura Feldmann , Yuyu Zhang , Xuemeng Zhang , Jia Sun , Ralf Riedel

{"title":"Oxidation behavior of monolithic boron containing SiC/(Hf0.5Ti0.5)C/C composites consolidated by SPS","authors":"Laura Feldmann , Yuyu Zhang , Xuemeng Zhang , Jia Sun , Ralf Riedel","doi":"10.1016/j.jeurceramsoc.2025.117607","DOIUrl":"10.1016/j.jeurceramsoc.2025.117607","url":null,"abstract":"<div><div>In the present study, the mechanical properties and the oxidation behavior of a SiC/(Hf<sub>0.5</sub>Ti<sub>0.5</sub>)C/C composite with and without boron addition are investigated. For the preparation of the monoliths, preceramic polymers are synthesized by single-source-precursor, and subsequently pyrolyzed. The resulting ceramic powders are consolidated by spark plasma sintering at 2200 °C to obtain dense pellets. The chemical modification of the single-source-precursor with a small amount of boron (about 0.16 wt%) leads to ceramic pellets with a more homogeneous microstructure. The hardness and the elastic modulus of dense SiC/(Hf<sub>0.5</sub>Ti<sub>0.5</sub>)C/C composites were found to be 27 and 336 GPa, respectively. The boron containing SiC/(Hf<sub>0.5</sub>Ti<sub>0.5</sub>)C/(B)C samples exhibited a hardness of 24 GPa and an elastic modulus of 299 GPa. Furthermore, the oxidation behavior was investigated via simultaneous thermal analysis up to 1500 °C for 20 h. The boron containing (Hf,Ti)C/SiC monoliths show about 20 % lower oxidation rates upon oxidation at 1400 °C.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117607"},"PeriodicalIF":5.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144230678","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

Decoupled ablation behavior analysis of multilayer glass-UHTC coating for carbon-based composites: Laser and plasma ablation environments 碳基复合材料多层玻璃uhtc涂层的去耦烧蚀行为分析：激光和等离子体烧蚀环境

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-06-06 DOI: 10.1016/j.jeurceramsoc.2025.117604

Xiaoxuan Li , Menglin Zhang , Dou Hu , Songlin Chen , Zhaofan Zhou , Zhijie Dong , Zhe Fan , Kefei Yan , Qiangang Fu

{"title":"Decoupled ablation behavior analysis of multilayer glass-UHTC coating for carbon-based composites: Laser and plasma ablation environments","authors":"Xiaoxuan Li , Menglin Zhang , Dou Hu , Songlin Chen , Zhaofan Zhou , Zhijie Dong , Zhe Fan , Kefei Yan , Qiangang Fu","doi":"10.1016/j.jeurceramsoc.2025.117604","DOIUrl":"10.1016/j.jeurceramsoc.2025.117604","url":null,"abstract":"<div><div>Constructing a dense and continuous oxide scale to resist high-energy laser and high-velocity heat flow remains critical for future carbon-based materials in aerospace field. Herein, a multilayer glass-HfC/ZrC/HfC coating was developed using plasma spraying and hot dipping-painting hybrid method. The high-temperature oxygen blocking of (Hf, Zr)O<sub>2</sub> solid solution, crack healing and micropore sealing of SiO<sub>2</sub>-based glass, jointly enhanced the ablation resistance of C/C composites under high-energy laser and high-velocity heat flow. Under high-energy laser ablation environment (39.8 MW/m<sup>2</sup>, 60 s), the self-derived Hf-Zr-Si-O oxide scale maintained dense and continuous structure, outperforming ZrC coating (6.8 μm/s) by about twice. Under high-velocity heat flow (7.26 MW/m<sup>2</sup>, > Mach 1), the Hf-Zr-Si-O oxide scale provided 1080 s protection with low mass and linear ablation variation rates of 0.19 mg/s and 0.16 ± 0.09 μm/s, attributed to improved ablation uniformity of the Hf-Zr-Si-O oxide scale and enhanced pore filling and sintering effects.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117604"},"PeriodicalIF":5.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144239428","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

Rapid synthesis and additive manufacturing of Y3Si2C2 ceramics: Ultrafast high-temperature sintering combined with direct ink writing Y3Si2C2陶瓷的快速合成与增材制造：超快高温烧结与直接油墨书写相结合

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-06-06 DOI: 10.1016/j.jeurceramsoc.2025.117610

Yuhang Bai , Jinrui Li , Jia Liu , Peipei Wang , Xing Zhao , Laifei Cheng

{"title":"Rapid synthesis and additive manufacturing of Y3Si2C2 ceramics: Ultrafast high-temperature sintering combined with direct ink writing","authors":"Yuhang Bai , Jinrui Li , Jia Liu , Peipei Wang , Xing Zhao , Laifei Cheng","doi":"10.1016/j.jeurceramsoc.2025.117610","DOIUrl":"10.1016/j.jeurceramsoc.2025.117610","url":null,"abstract":"<div><div>Y<sub>3</sub>Si<sub>2</sub>C<sub>2</sub> powders were successfully fabricated through the <em>in situ</em> reaction of Y and SiC using ultrafast high-temperature sintering (UHS), which is the first attempt to synthesize rare-earth silicates (RE<sub>3</sub>Si<sub>2</sub>C<sub>2</sub>) at an ultrahigh rate. Phase analysis reveals that a relatively pure Y<sub>3</sub>Si<sub>2</sub>C<sub>2</sub> product is obtained at 1050 °C, exhibiting distinctive lamellar morphology. The synthesized Y<sub>3</sub>Si<sub>2</sub>C<sub>2</sub> powder was then employed to formulate a shear-thinning ink, and an optimized emulsion-based ink combined with direct ink writing enabled the precise fabrication of honeycomb structures, which exhibited exceptional mechanical properties after sintering. Compared with conventional sintering processes featuring low heating rates (∼10 °C/min) and prolonged dwell times (∼2 h), UHS can efficiently synthesize Y<sub>3</sub>Si<sub>2</sub>C<sub>2</sub> within significantly shorter times (∼50 s) and at lower temperatures (∼950 °C). The proposed integration of the preparation and forming methods paves the way for the exploration of novel perspectives in the application of Y<sub>3</sub>Si<sub>2</sub>C<sub>2</sub> in complex-structure ceramics.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117610"},"PeriodicalIF":5.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263298","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 transition metal type and sputter deposition conditions on the hardness of transition metal carbide thin films 过渡金属类型和溅射沉积条件对过渡金属碳化物薄膜硬度的影响

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-06-06 DOI: 10.1016/j.jeurceramsoc.2025.117602

C.H. Blacksher , A. Stubbers , C.R. Weinberger , G.B. Thompson

{"title":"Influence of transition metal type and sputter deposition conditions on the hardness of transition metal carbide thin films","authors":"C.H. Blacksher , A. Stubbers , C.R. Weinberger , G.B. Thompson","doi":"10.1016/j.jeurceramsoc.2025.117602","DOIUrl":"10.1016/j.jeurceramsoc.2025.117602","url":null,"abstract":"<div><div>Transition metal carbides (TMCs) are known for their ultrahigh melting temperatures and high hardness making them ideal for coating applications in extreme environments. The present work investigates the role of atomic mass and chamber pressure on the resulting film hardness for a series of Zr, Nb, and Ta TMCs that are synthesized via reactive gas sputter deposition. For all TMCs, the hardness varied between approximately 5 and 15 GPa for deposition pressures between 7 and 13 mTorr, which is lower than their bulk values as measured from consolidated powder billets. However, at 4 mTorr, ZrC and NbC hardness rose to approximately 20 and 27 GPa, respectively, which is closer to and at their bulk values, and TaC rose to a hardness near 47 GPa, which is greater than its bulk value and is within the superhard regime. These collective effects are explained by the changes in crystallite sizes, film texture, and film densification that occur due to atomic peening effects resulting from the differences in transition metal atomic masses and sputtering pressures, which alter the arrival energy during deposition.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117602"},"PeriodicalIF":5.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297867","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

In situ grown silicon carbide nanowires reinforced hexagonal boron nitride ceramics 原位生长碳化硅纳米线增强六方氮化硼陶瓷

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-06-06 DOI: 10.1016/j.jeurceramsoc.2025.117603

Shijia Gu , Hui Yu , Xiangmin Wu , Junzhuo Wang , Bingjie Fu , Xiaofang Lu , Jianlin Li , Lianjun Wang , Wan Jiang

{"title":"In situ grown silicon carbide nanowires reinforced hexagonal boron nitride ceramics","authors":"Shijia Gu , Hui Yu , Xiangmin Wu , Junzhuo Wang , Bingjie Fu , Xiaofang Lu , Jianlin Li , Lianjun Wang , Wan Jiang","doi":"10.1016/j.jeurceramsoc.2025.117603","DOIUrl":"10.1016/j.jeurceramsoc.2025.117603","url":null,"abstract":"<div><div>One-dimensional (1D) structures, such as nanowires, whiskers and fibers, have attracted extensive attentions for their potential as reinforcements for advanced composite materials. To achieve uniform dispersion of 1D structures in the matrix and to materialize strong interface bonding between them and the matrix are the two most challenging tasks for preparing high-performance composite materials. For hexagonal boron nitride (h-BN) ceramics are naturally weak, in this work, SiC nanowires were introduced into BN powders via in-situ grown on a catalyst using chemical vapor deposition (CVD) technology and this technology ensured the uniform dispersion of SiC nanowires in later h-BN ceramics. High performance h-BN composite ceramics were fabricated by spark plasma sintering from as-prepared powder mixture of h-BN and SiC nanowires doped with cubic boron nitride (c-BN). The onion-like h-BN structures, freshly derived from c-BN, were activatory during the sintering process, facilitating the SiC nanowires firmly anchored onto the h-BN grains. These SiC nanowires were thus well distributed and strongly bonded with h-BN matrix, significantly improving the mechanical properties of h-BN ceramics by stopping and deflecting the extension of cracks. Optimal composite performance was achieved when SiC nanowires were grown with a catalyst mass ratio of 5.50 wt%, and the density, Young's modulus and flexural strength of the sample reached 2.29 g/cm<sup>3</sup>, 35 GPa, and 171 MPa, respectively. This study demonstrates a new combination strategy for the preparation of high-performance h-BN composite ceramics, and will further promote the development and application of h-BN ceramics.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117603"},"PeriodicalIF":5.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144239427","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