Journal of The European Ceramic Society最新文献_第7页

Non-classical electromechanical behavior in multi-cation stabilized zirconia (Yb0.04Y0.04Gd0.04Nb0.10-Zr0.78O2-δ) ceramics 多阳离子稳定氧化锆（Yb0.04Y0.04Gd0.04Nb0.10-Zr0.78O2-δ）陶瓷的非经典机电行为

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-28 DOI: 10.1016/j.jeurceramsoc.2025.117568

Ahsanul Kabir , Anna Lavie , Victor Buratto Tinti , Vincenzo Esposito , Frank Kern

{"title":"Non-classical electromechanical behavior in multi-cation stabilized zirconia (Yb0.04Y0.04Gd0.04Nb0.10-Zr0.78O2-δ) ceramics","authors":"Ahsanul Kabir , Anna Lavie , Victor Buratto Tinti , Vincenzo Esposito , Frank Kern","doi":"10.1016/j.jeurceramsoc.2025.117568","DOIUrl":"10.1016/j.jeurceramsoc.2025.117568","url":null,"abstract":"<div><div>This work aims to investigate the electromechanical properties of a new mixed tetragonal-cubic composition: multi-cation stabilized tetragonal zirconia polycrystal (MC-TZP) ceramics, stabilized by 2 mol% Yb<sub>2</sub>O<sub>3</sub>–2 mol% Y<sub>2</sub>O<sub>3</sub>–2 mol% Gd<sub>2</sub>O<sub>3</sub>–5 mol% Nb<sub>2</sub>O<sub>5</sub>. The evolution of microstructure, dielectric, mechanical, and ferroelastic properties was also characterized. The MC-TZP powder was synthesized by solid-state reaction and then consolidated by two sintering methods, i.e., hot pressing and conventional sintering. Hot pressing produced an ultrafine microstructure with small grains, while conventional sintering resulted in larger grains. Both ceramics samples exhibit large longitudinal electrostrictive (M<sub>33</sub> ≥ 1 <sub>*</sub> 10<sup>−17</sup> m<sup>2</sup>/V<sup>2</sup>) coefficients at 1 Hz and a typical frequency-related relaxation effect, with the hot-pressed material demonstrating a relatively higher M<sub>33</sub> value. This enhancement correlates with improved electrical properties, characterized by a higher dielectric constant and electrical conductivity compared to the conventionally sintered counterpart.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117568"},"PeriodicalIF":5.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195159","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

Ablation regression behaviors of C/C composites under mechanochemical coupling 力学-化学耦合作用下C/C复合材料的烧蚀回归行为

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-27 DOI: 10.1016/j.jeurceramsoc.2025.117550

Haodong Liu , Yan Liu , Weixu Zhang , Jianru Wang

{"title":"Ablation regression behaviors of C/C composites under mechanochemical coupling","authors":"Haodong Liu , Yan Liu , Weixu Zhang , Jianru Wang","doi":"10.1016/j.jeurceramsoc.2025.117550","DOIUrl":"10.1016/j.jeurceramsoc.2025.117550","url":null,"abstract":"<div><div>In previous work, a theoretical explanation that stress affected ablation thermochemical reactions was proposed for the formation of the typical steady state ablation morphology of C/C composites. However, the mechanism of mechanochemical coupling is still unclear, and the ablation velocity expression took the first-order Taylor expansion term lacks of precision under extreme load environment. This study proposes a mechanism by which stress affects the rate constant of chemical reactions through modifications in the activation energy. A quantitative relationship between stress and chemical reaction rate constant is derived from thermodynamic equilibrium perspective, leading to a revised expression for ablation velocity. Furthermore, the investigation into the effects of mechanochemical coupling on steady state and transient ablation recession behaviors is conducted through microscopic to mesoscopic scale change. The findings from this research provide valuable theoretical insights into the interactions among various physical fields and their influence on ablation recession behaviors of C/C composites.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117550"},"PeriodicalIF":5.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169810","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

Ion-mixing-induced mitigation of swelling and modulus reduction in irradiated SiC fibers 离子混合对辐照SiC纤维溶胀和模量降低的抑制作用

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-27 DOI: 10.1016/j.jeurceramsoc.2025.117563

Xinwei Yuan , Sosuke Kondo , Diancheng Geng , Kiyohiro Yabuuchi , Hao Yu , Yasuyuki Ogino , Ryuta Kasada

{"title":"Ion-mixing-induced mitigation of swelling and modulus reduction in irradiated SiC fibers","authors":"Xinwei Yuan , Sosuke Kondo , Diancheng Geng , Kiyohiro Yabuuchi , Hao Yu , Yasuyuki Ogino , Ryuta Kasada","doi":"10.1016/j.jeurceramsoc.2025.117563","DOIUrl":"10.1016/j.jeurceramsoc.2025.117563","url":null,"abstract":"<div><div>The competition between shrinkage and swelling in irradiated silicon carbide (SiC) with progressive defect recovery was investigated. Both chemical vapor infiltration-prepared SiC (CVI-SiC) and fibers containing excess C showed irradiation-induced swelling, with fibers exhibiting less swelling than the CVI-matrix, suggesting that excess C reduces SiC swelling. Swelling in the SiC fibers was proportional to the degree of ion-mixing. The effect of ion-mixing-induced swelling at the fiber rim was considered dominant, while the shrinkage effect played a leading role in the fiber core. Furthermore, post-irradiation reductions in Young’s modulus were observed, reaching up to 73.6 % in the rim of HNLS and 89.6 % in the core of TSA3. When the damage increased to 100 displacements per atom, the modulus reduction of the fiber core stopped, whereas the modulus increased at the fiber rim, likely because of the competition between swelling and shrinkage. This study qualitatively explains SiC fiber swelling and modulus changes under irradiation, offering insights into addressing composite strength degradation arising from swelling mismatches in SiC components.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117563"},"PeriodicalIF":5.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168263","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

Elastic properties of domains and domain walls in (K0.5Na0.5)NbO3 single crystal （K0.5Na0.5）NbO3单晶畴和畴壁的弹性特性

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-27 DOI: 10.1016/j.jeurceramsoc.2025.117566

Katarina Žiberna , Maja Koblar , Andraž Bradeško , Micka Bah , Franck Levassort , Goran Dražić , Hana Uršič , Andreja Benčan

{"title":"Elastic properties of domains and domain walls in (K0.5Na0.5)NbO3 single crystal","authors":"Katarina Žiberna , Maja Koblar , Andraž Bradeško , Micka Bah , Franck Levassort , Goran Dražić , Hana Uršič , Andreja Benčan","doi":"10.1016/j.jeurceramsoc.2025.117566","DOIUrl":"10.1016/j.jeurceramsoc.2025.117566","url":null,"abstract":"<div><div>The elastic properties of ferroelectric materials at the nanoscale are intricate, with domains and domain walls each having their own distinct elasticity – a property which can be exploited for tailoring materials performance. In this study, we report on the elastic response of the ferroelectric domain structure of a (K<sub>0.5</sub>Na<sub>0.5</sub>)NbO<sub>3</sub> single crystal, measured using an atomic force microscopy-based techniques. Before mapping the elastic properties, the domain structure was characterized using piezo-response force microscopy and transmission electron microscopy. The average measured reduced elastic modulus was ∼130 GPa. The 90° domain walls exhibit a 20 % difference in the reduced modulus, appearing elastically harder on one side of the domain and elastically softer on the other. In contrast, 60° domain walls showed no mechanical contrast with the neighboring domains. Anisotropy in elasticity was also observed between domains with different piezoelectric activity.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117566"},"PeriodicalIF":5.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222513","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

Abnormal change in dielectric constant of BaTiO3 -based ceramics caused by light irradiation: Key role of temperature 光照射引起的BaTiO3基陶瓷介电常数异常变化：温度的关键作用

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-27 DOI: 10.1016/j.jeurceramsoc.2025.117565

Peng-yu Wang , Xiao-ming Chen , Han-li Lian , Neng Qin , Tian-feng Xu , Xu-mei Zhao , Peng Liu

{"title":"Abnormal change in dielectric constant of BaTiO3 -based ceramics caused by light irradiation: Key role of temperature","authors":"Peng-yu Wang , Xiao-ming Chen , Han-li Lian , Neng Qin , Tian-feng Xu , Xu-mei Zhao , Peng Liu","doi":"10.1016/j.jeurceramsoc.2025.117565","DOIUrl":"10.1016/j.jeurceramsoc.2025.117565","url":null,"abstract":"<div><div>Change in dielectric constant of dielectric materials caused by light irradiation is called as photo-dielectric effect (PDE), which is very important to develop innovative electronic devices with photo-dielectric functionalities. The light irradiation always causes increase in dielectric constant, as reported widely in various materials including (Bi<sub>0.5</sub>Na<sub>0.5</sub>)<sub>0.94</sub>Ba<sub>0.06</sub>TiO<sub>3</sub> (BNBT). However, in this work, light illumination -induced obvious decrease in dielectric constant of the dense Mn<sup>3 +</sup>-doped BaTiO<sub>3</sub> -based ceramics (BTM) was observed at room temperature, which shows opposite phenomenon compared to BNBT. By exploring effect of temperature on PDE, it is found that the thermal effect plays key role in affecting PDE behavior. The corresponding mechanism for the discrepancy of PDE between BTM and BNBT was discussed. The study helps to further explore complex factors affecting abnormal behavior of PDE.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117565"},"PeriodicalIF":5.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155158","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

Ordered distribution of bubble complexes induced by the planar defects 由平面缺陷引起的气泡配合物的有序分布

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-27 DOI: 10.1016/j.jeurceramsoc.2025.117564

Shen Li , Ziqi Cao , Zuojiang Wang , Mengli Xiao , Han Luo , Guang Ran

引用次数: 0

Synthesis and comprehensive performance of magnesium tantalate ceramics 钽酸镁陶瓷的合成及综合性能研究

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-26 DOI: 10.1016/j.jeurceramsoc.2025.117562

Yichen Xing , Ruifang Wang , Yufei Shi , Yusi Che , Jilin He

{"title":"Synthesis and comprehensive performance of magnesium tantalate ceramics","authors":"Yichen Xing , Ruifang Wang , Yufei Shi , Yusi Che , Jilin He","doi":"10.1016/j.jeurceramsoc.2025.117562","DOIUrl":"10.1016/j.jeurceramsoc.2025.117562","url":null,"abstract":"<div><div>MgTa<sub>2</sub>O<sub>6</sub> and Mg<sub>4</sub>Ta<sub>2</sub>O<sub>9</sub> were synthesized separately based on the effects of temperature, preforming pressure, and morphology of raw material tantalum pentoxide on the phase composition and microstructure of magnesium tantalate. The comprehensive performance and manufacturing cost of MgTa<sub>2</sub>O<sub>6</sub> and Mg<sub>4</sub>Ta<sub>2</sub>O<sub>9</sub> ceramics were evaluated. The experimental results indicated that the optimum synthesis conditions of MgTa<sub>2</sub>O<sub>6</sub> and Mg<sub>4</sub>Ta<sub>2</sub>O<sub>9</sub> included type-I tantalum pentoxide as raw material, 100 MPa of preforming pressure, and 1260 °C for 10 h of temperature profile. Compared with MgTa<sub>2</sub>O<sub>6</sub>, Mg<sub>4</sub>Ta<sub>2</sub>O<sub>9</sub> ceramic exhibited superior mechanical and thermal performance with a thermal conductivity of 1.94–3.02 W·m<sup>−1</sup>·K<sup>−1</sup> across 100–1000 °C, coupled with a thermal expansion coefficient of 11.1 × 10<sup>−6</sup> K<sup>−1</sup> at 1000 °C and Vickers hardness of 7.11 GPa. Mg<sub>4</sub>Ta<sub>2</sub>O<sub>9</sub> ceramic has the advantage of comprehensive performance and manufacturing cost relative to conventional rare earth tantalate and yttria stabilized zirconia (YSZ), which is a promising alternative for next-generation thermal barrier coatings (TBCs) applications.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117562"},"PeriodicalIF":5.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168262","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

Progressive entropy engineering in AlTiHfNbTaZrN: Achieving superior thermomechanical properties through lattice distortion and thermodynamic kinetic factors AlTiHfNbTaZrN的渐进熵工程：通过晶格畸变和热力学动力学因素获得优异的热力学性能

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-26 DOI: 10.1016/j.jeurceramsoc.2025.117558

Hua D. Zhang , Jie Zhang , Li Chen , Yi Kong

{"title":"Progressive entropy engineering in AlTiHfNbTaZrN: Achieving superior thermomechanical properties through lattice distortion and thermodynamic kinetic factors","authors":"Hua D. Zhang , Jie Zhang , Li Chen , Yi Kong","doi":"10.1016/j.jeurceramsoc.2025.117558","DOIUrl":"10.1016/j.jeurceramsoc.2025.117558","url":null,"abstract":"<div><div>High-entropy nitride coatings garnered significant attention by overcoming the earlier thermal decomposition of TiAlN. Combining DFT calculations and experimental studies, we demonstrate all AlTiHfNbTaZrN coatings adopt a rock salt structure, driven by energetic preference and entropy stabilizing. Increasing Me content (Me=Hf+Nb+Ta+Zr) enhances hardness progressively from ∼28.4 GPa of Al<sub>0.45</sub>Ti<sub>0.55</sub>N to ∼36.9 GPa of Al<sub>0.38</sub>Ti<sub>0.14</sub>(Me)<sub>0.48</sub>N, attributed to lattice distortion. Toughness improvements correlate with Ta/Nb-induced metallic bonding. Thermal stability improves with peak hardness at ∼37.9 GPa for Al<sub>0.38</sub>Ti<sub>0.14</sub>(Me)<sub>0.48</sub>N after annealing to 1100 °C, surpassing ∼32.8 GPa of Al<sub>0.45</sub>Ti<sub>0.55</sub>N after 900 °C. Decreased activation energies indicate no hysteretic diffusion effect with increased entropy and distortion, while Me substitution strengthens ionic bondings with nitrogen to offset lattice expansion and brings increased average diffusion energies for non-Al metal atoms. Furthermore, greater strain energy between c-AlN and parent nitrides hinders the precipitation of Al atoms. These entropy-engineered coatings outperform TiAlN, making them ideal for cutting tools.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 14","pages":"Article 117558"},"PeriodicalIF":5.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155157","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

Microwave sintering of SnO2/ZnO ceramics: Effects of SiC susceptor 微波烧结SnO2/ZnO陶瓷：SiC感受器的影响

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-26 DOI: 10.1016/j.jeurceramsoc.2025.117560

Petra Šimonová , Clémence Petit , Christophe Meunier , François Valdivieso , Willi Pabst

引用次数: 0

Enhanced mechanical properties and oxidation resistance of (Ti,W,Mo,Ta)(C,N)-doped binderless Ti(C,N)-based ceramics （Ti，W,Mo,Ta）（C，N）掺杂无粘结剂Ti（C，N）基陶瓷的力学性能和抗氧化性能增强

IF 5.8 2区材料科学

Journal of The European Ceramic Society Pub Date : 2025-05-26 DOI: 10.1016/j.jeurceramsoc.2025.117543

Xiyue Kang , Fengwei Xie , Ziren Yuan , Shuaipeng Chen , Ziyi Xu , Zeyu Teng , Xiaojing Li , Yuehui He

{"title":"Enhanced mechanical properties and oxidation resistance of (Ti,W,Mo,Ta)(C,N)-doped binderless Ti(C,N)-based ceramics","authors":"Xiyue Kang , Fengwei Xie , Ziren Yuan , Shuaipeng Chen , Ziyi Xu , Zeyu Teng , Xiaojing Li , Yuehui He","doi":"10.1016/j.jeurceramsoc.2025.117543","DOIUrl":"10.1016/j.jeurceramsoc.2025.117543","url":null,"abstract":"<div><div>Binderless Ti(C,N)-based ceramics were fabricated via spark plasma sintering using Ti(C,N) and (Ti,W,Mo,Ta)(C,N) powders as starting materials. Thermal analysis results indicated that, compared with Ti(C,N) powders, the solid solution powders possessed higher activation energy for oxidation, reducing oxidation susceptibility during preparation and promoting densification during sintering. As the content of (Ti,W,Mo,Ta)(C,N) increased, the relative density and transverse rapture strength were continuously enhanced. The sample containing 80 wt % solid solution exhibited the highest hardness and fracture toughness. Additionally, the utilization of (Ti,W,Mo,Ta)(C,N) significantly enhanced oxidation resistance, which was attributed to its promotion of the anatase-to-rutile phase transformation of the oxidation products, owing to the incorporation of W, Mo, and Ta into the Ti(C,N). During the initial stage of oxidation, the oxidation products of (Ti,W,Mo,Ta)(C,N) rapidly transformed to rutile-type oxides with high stability. This mechanism inhibited volume changes and crack formation, resulting in dense and flat oxidized surfaces.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117543"},"PeriodicalIF":5.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169840","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