Journal of The European Ceramic Society最新文献_第3页

Pore coalescence as an inherent problem in the sintering of zirconia nanoparticles

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-02-10 DOI: 10.1016/j.jeurceramsoc.2025.117272

Martin Trunec , Premysl Stastny , Eliska Siska Viragova , Dinara Sobola

引用次数: 0

Low-temperature facile and fast preparation of (Hf, Ta)B2-(Hf, Ta)C-SiC ultrahigh-temperature multi-phases ceramics: Microstructure and mechanical properties

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-02-10 DOI: 10.1016/j.jeurceramsoc.2025.117268

Huan Guo , Bingzhu Wang , Ruifeng Li , Xiaohu Li , Jixiang Dai , Yongzhong Zhao , Jianjun Sha

{"title":"Low-temperature facile and fast preparation of (Hf, Ta)B2-(Hf, Ta)C-SiC ultrahigh-temperature multi-phases ceramics: Microstructure and mechanical properties","authors":"Huan Guo , Bingzhu Wang , Ruifeng Li , Xiaohu Li , Jixiang Dai , Yongzhong Zhao , Jianjun Sha","doi":"10.1016/j.jeurceramsoc.2025.117268","DOIUrl":"10.1016/j.jeurceramsoc.2025.117268","url":null,"abstract":"<div><div>Aiming at the high sintering temperature and densification difficulty in ultrahigh-temperature ceramics, the low-temperature facial and fast preparation of ultrahigh-temperature multi-phases (Hf, Ta)B<sub>2</sub>-(Hf, Ta)C-SiC solid solution ceramics was realized using in-situ reaction combined with hot pressing, where the HfSi<sub>2</sub>, TaSi<sub>2</sub>, B<sub>4</sub>C and C were used as raw materials. The effect of Hf/Ta molar ratio on the microstructural evolution and mechanical properties of ultrahigh-temperature multi-phases ceramics was investigated. The results found that the in-situ reaction and the formation of solid solution phase could promote the densification process. On the other hand, the addition of Ta element induced the formation of high aspect ratio grains with an interlock structure within the ceramic matrix and significantly improved the mechanical properties. When the Hf/Ta molar ratio was 7/3, the multi-phases ceramics exhibited the best mechanical properties, with a hardness of 25.59 GPa, a flexural strength of 556.61 MPa, and a fracture toughness of 5.13 MPa·m<sup>1/2</sup>. The enhanced mechanical properties were attributed to the synergistic effect of multiple strengthening and toughening mechanism, including grain bridging, crack bifurcation and grain pullout induced by high aspect ratio (Hf, Ta)B<sub>2</sub> grains.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 9","pages":"Article 117268"},"PeriodicalIF":5.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437721","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

An in-depth exploration of microstructural characteristics and phase evolution in RE-silicates (RE= Er0.25Tm0.25Yb0.25Lu0.25) multiphase environmental barrier coatings utilizing digital image processing techniques

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-02-10 DOI: 10.1016/j.jeurceramsoc.2025.117276

Keyu Wang , Ziyu Wang , Tiefeng Du , Yang Cui , Zhixin Luo , Yixiu Luo , Jing Liu , Luchao Sun , Jingyang Wang

{"title":"An in-depth exploration of microstructural characteristics and phase evolution in RE-silicates (RE= Er0.25Tm0.25Yb0.25Lu0.25) multiphase environmental barrier coatings utilizing digital image processing techniques","authors":"Keyu Wang , Ziyu Wang , Tiefeng Du , Yang Cui , Zhixin Luo , Yixiu Luo , Jing Liu , Luchao Sun , Jingyang Wang","doi":"10.1016/j.jeurceramsoc.2025.117276","DOIUrl":"10.1016/j.jeurceramsoc.2025.117276","url":null,"abstract":"<div><div>Multiphase high-entropy rare-earth silicate environmental barrier coatings (EBCs) were processed using atmospheric plasma spraying (APS) method with six specifically designed feedstocks, each comprising varying proportions of (Er<sub>0.25</sub>Tm<sub>0.25</sub>Yb<sub>0.25</sub>Lu<sub>0.25</sub>)<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> and (Er<sub>0.25</sub>Tm<sub>0.25</sub>Yb<sub>0.25</sub>Lu<sub>0.25</sub>)<sub>2</sub>SiO<sub>5</sub>. The microstructural characteristics and phase evolution of the as-deposited coatings, as well as those subjected to annealing at 1300 °C, were investigated. For quantitative comparison, a comprehensive analysis was conducted on phase distribution and proportions, crack area percentages, mean crack widths, porosity and pore sizes were systematically analyzed using digital image processing techniques. Results indicate that a higher disilicate proportion in the topcoats (M25D75, M10D90 and D100) reduces cracking and ensures balanced microstructural morphologies of coatings, suggesting enhanced performance in EBC applications. Additionally, this study demonstrates that the compositional and microstructural characteristics of rare earth silicates in EBCs can be effectively controlled through judicious adjustment of feedstock composition.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 8","pages":"Article 117276"},"PeriodicalIF":5.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143420737","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

Fiber effects on creep and cyclic durability of 3D woven SiC/SiC composites with a hybrid SiC matrix

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-02-10 DOI: 10.1016/j.jeurceramsoc.2025.117275

R.T. Bhatt , J. Lang , S. Mital

引用次数: 0

Simultaneous enhancement of d33 and depolarization temperature of the morphotropic phase boundary composition of the Pb-free piezoceramic Na1/2Bi1/2TiO3–BaTiO3

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-02-09 DOI: 10.1016/j.jeurceramsoc.2025.117271

Getaw Abebe Tina, Rajeev Ranjan

引用次数: 0

Epoxide-oligosiloxane hybrid resin for enhanced ceramic shrinkage resistance

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-02-07 DOI: 10.1016/j.jeurceramsoc.2025.117270

Hyun-Hee Choi , Bong-Gu Kim , Min-Gyu Kim , Ha-Eun Seo , Shiori Sakuraki , Sea-Hoon Lee , Yeon-Gil Jung , SeungCheol Yang

{"title":"Epoxide-oligosiloxane hybrid resin for enhanced ceramic shrinkage resistance","authors":"Hyun-Hee Choi , Bong-Gu Kim , Min-Gyu Kim , Ha-Eun Seo , Shiori Sakuraki , Sea-Hoon Lee , Yeon-Gil Jung , SeungCheol Yang","doi":"10.1016/j.jeurceramsoc.2025.117270","DOIUrl":"10.1016/j.jeurceramsoc.2025.117270","url":null,"abstract":"<div><div>Heat treatment is essential for developing high-strength ceramics; however, maintaining dimensional stability post-treatment is challenging due to shrinkage and warpage. In this study, we synthesized sol-gel-derived cycloaliphatic epoxide oligosiloxane resins and applied them to ceramic bodies to enhance their shrinkage resistance. The optimal resin composition and synthetic conditions were determined by analyzing the bonding structures and thermal properties. The resin was blended with ceramic powders and heat-treated to assess its effects on fracture strength, thermal expansion, and dimensional stability. The hybrid binder with both organic and inorganic components significantly improved the mechanical properties and thermal stability of ceramics. Incorporating mixed particle sizes into the ceramic powder increased packing density, leading to a higher residual solid content after pyrolysis and reduced shrinkage during sintering. Even at temperatures above 1300 °C, minimal shrinkage was observed, making this approach promising for the production of high-performance ceramic parts for aerospace, automotive, and electronics applications.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 8","pages":"Article 117270"},"PeriodicalIF":5.8,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403460","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

Optimizing Si–C reaction bonding for SiC joining: Effects of filler composition, thickness, and surface roughness on joint strength

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-02-07 DOI: 10.1016/j.jeurceramsoc.2025.117269

Sebin Park , Sooyeon Joo , Jong Seob Song , Jung-Hye Eom , Han Nam Cheong , Dang-Hyok Yoon

引用次数: 0

Phase field simulation of columnar grain formation induced by pore migration in UO2

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-02-05 DOI: 10.1016/j.jeurceramsoc.2025.117264

Caiyan Liu , Yunpeng Zhang , Dazhao Cheng , Liyang Shao , Changqing Teng , Lu Wu , Jing Zhang

{"title":"Phase field simulation of columnar grain formation induced by pore migration in UO2","authors":"Caiyan Liu , Yunpeng Zhang , Dazhao Cheng , Liyang Shao , Changqing Teng , Lu Wu , Jing Zhang","doi":"10.1016/j.jeurceramsoc.2025.117264","DOIUrl":"10.1016/j.jeurceramsoc.2025.117264","url":null,"abstract":"<div><div>This study investigates the formation of radially aligned columnar grains surrounding central voids in porous uranium dioxide (UO<sub>2</sub>) fuel rods, utilizing a multiphase field model to analyze the impact of pore migration. The results indicate that the transformation from equiaxed grains to columnar structures is driven by the directional migration of pores towards the fuel center, influenced by high temperatures and steep temperature gradients. Increased temperature gradients, porosity, and pore density enhance the columnar morphological features of the grains. As pores migrate, they attach to grain boundaries, facilitating the movement of circumferential grain boundaries while pinning radial ones. This interaction promotes directional grain coarsening towards the fuel center, ultimately resulting in distinct columnar grains. This research provides valuable insights into the complex interactions between pore dynamics and grain boundary behavior, elucidating the microstructural evolution of UO<sub>2</sub> under operational conditions.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 7","pages":"Article 117264"},"PeriodicalIF":5.8,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377012","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

Effect of pore architecture on quasistatic compressive deformation of freeze-cast porous alumina scaffolds

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-02-05 DOI: 10.1016/j.jeurceramsoc.2025.117263

Satyanarayana Sabat, Soumavo Sikder, Shantanu K. Behera, Arindam Paul

{"title":"Effect of pore architecture on quasistatic compressive deformation of freeze-cast porous alumina scaffolds","authors":"Satyanarayana Sabat, Soumavo Sikder, Shantanu K. Behera, Arindam Paul","doi":"10.1016/j.jeurceramsoc.2025.117263","DOIUrl":"10.1016/j.jeurceramsoc.2025.117263","url":null,"abstract":"<div><div>We investigated the influence of various pore architectures namely lamellar, dendritic and isotropic on uniaxial compressive response of freeze-cast porous alumina (platelets) scaffolds at quasistatic strain rate (10<sup>−4</sup> s<sup>−1</sup>). The compressive response of the highly porous (>85 %) scaffolds exhibited cellular-like, damageable failure behaviour independent of pore structure. We suggest that high pore content (vis-à-vis less solid walls fraction) restricts the propagation of long, macroscopic cracks by crack-crack interaction along the lamella walls. This results in multiple fragments of the lamella walls by gradual crushing, a fundamental characteristic of cellular-like failure behaviour. Comparison of our experimental results with honeycomb out-of-plane deformation model derived by Gibson-Ashby further revealed that buckling induced elastic instability of the lamella walls is the strength (compressive) limiting mechanism. Microscopic observation showed extensive local damage of lamella walls (while the overall scaffolds remain intact at macroscopic level), which further confirms localized elastic instability (buckling) within lamella walls.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 7","pages":"Article 117263"},"PeriodicalIF":5.8,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350856","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

Nanohardness of grains and grain boundaries in reactive sintered (Ti-Zr-Nb-Hf-Ta)B2 + (Ti-Zr-Nb-Hf-Ta)C composite

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-02-04 DOI: 10.1016/j.jeurceramsoc.2025.117261

Annamária Naughton-Duszová , Dávid Medveď , Monika Hrubovčáková , Ondrej Petruš , Marek Vojtko , Peter Švec , Ľubomír Medvecký , Pavol Hvizdoš , Ján Dusza

{"title":"Nanohardness of grains and grain boundaries in reactive sintered (Ti-Zr-Nb-Hf-Ta)B2 + (Ti-Zr-Nb-Hf-Ta)C composite","authors":"Annamária Naughton-Duszová , Dávid Medveď , Monika Hrubovčáková , Ondrej Petruš , Marek Vojtko , Peter Švec , Ľubomír Medvecký , Pavol Hvizdoš , Ján Dusza","doi":"10.1016/j.jeurceramsoc.2025.117261","DOIUrl":"10.1016/j.jeurceramsoc.2025.117261","url":null,"abstract":"<div><div>Nanohardness of grains and grain boundaries in reactive spark plasma sintered dual-phase (Ti<sub>0.82</sub>Zr<sub>0.04</sub>Nb<sub>0.08</sub>Hf<sub>0.03</sub>Ta<sub>0.03</sub>)B<sub>2</sub> + (Ti<sub>0.49</sub>Zr<sub>0.12</sub>Nb<sub>0.13</sub>Hf<sub>0.11</sub>Ta<sub>0.15</sub>)C high-entropy composite was investigated. The composite with a high relative density of 99.8 %, consists predominantly of carbide (∼56.4 vol%) and boride (∼39.7 vol%) phases with average grain sizes of 2.2 μm and 3.4 μm of the carbide and boride phases, respectively. Most grain/phase boundaries show a continuous sharp ∼ 1.5 nm wide segregation of Fe, Co, and Ni impurities. Nanohardness was measured by nanoindentation on polished/non-deformed and worn/deformed surfaces. At non-deformed surface, the average hardness/Young’s modulus of boride and carbide grains are 41.3 ± 2.9 GPa/596 ± 25 GPa and 38.3 ± 2.3 GPa/553 ± 24 GPa, respectively. At the vicinity of grain boundaries, the hardness/Young modulus is 37.3 ± 2.5 GPa/600 ± 32 GPa. At deformed surfaces, the average hardness of boride grains is higher and the average hardness of carbide grains is slightly higher compared to the values at non-deformed surfaces, with values of 42.4 ± 3.9 GPa, and 38.4 ± 2.4 GPa, respectively.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 7","pages":"Article 117261"},"PeriodicalIF":5.8,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395735","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