Journal of The European Ceramic Society最新文献

{"title":"Study on structural and microstructural evolution during liquid phase flash sintering of 3mol% yttria stabilized zirconia","authors":"Ammar Eqbal ,&nbsp;Rohit Raj ,&nbsp;Shubham Kumar Singh ,&nbsp;Antrakrate Gupta ,&nbsp;Shikhar Krishn Jha ,&nbsp;Tamoghna Chakrabarti","doi":"10.1016/j.jeurceramsoc.2025.117408","DOIUrl":"10.1016/j.jeurceramsoc.2025.117408","url":null,"abstract":"<div><div>The choice of additives can significantly influence the material's densification behavior, microstructure and phase evolution during flash sintering. The liquid-phase flash sintering of 3 mol% yttria-stabilized zirconia (3YSZ) has been investigated by selecting two additives: calcium aluminosilicate (CAS) and aluminosilicate (AS). Incorporating calcium aluminosilicate (CAS) into 3 mol% yttria-stabilized zirconia (3YSZ) during flash sintering facilitates liquid-phase formation, leading to enhanced densification. However, this also promotes a phase transition from tetragonal to cubic in 3YSZ, attributed to the integration of Ca²⁺ ions into the zirconia lattice. This behavior contrasts with conventional sintering methods, where such phase transformations are not observed. Conversely, aluminosilicate (AS), with its higher melting point and viscosity, results in minimal liquid-phase formation during sintering. This maintains the 3YSZ's tetragonal phase with only minor monoclinic presence. These findings underscore the critical role of additive selection in tailoring the microstructural and phase characteristics of 3YSZ, thereby influencing its properties.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 12","pages":"Article 117408"},"PeriodicalIF":5.8,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739878","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}

{"title":"Scheelite-based highly reflective enamels with varied crystal morphology and its influence on the solar reflectance","authors":"Silvia Gómez-Peral ,&nbsp;Miguel Rubio ,&nbsp;Fausto Rubio ,&nbsp;Juan Rubio ,&nbsp;Aitana Tamayo","doi":"10.1016/j.jeurceramsoc.2025.117409","DOIUrl":"10.1016/j.jeurceramsoc.2025.117409","url":null,"abstract":"<div><div>Scheelite-based enamels were prepared by melting of a WO₃-containing glass. Annealing at different temperatures produce crystals with different morphologies ranging from arrows to bypiramids. The structural characterization allows determining the size of the crystals as well as the differences in the local environment of the glassy matrix. It was deduced that there were no significant differences in the crystallinity of the materials when the annealing temperature was raised but the polymerization of the glassy network decreased with the increase of the temperature. The low connectivity of the glass network induces the changes in the morphology of the scheelite crystals thus influencing the solar reflectance of the materials.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 12","pages":"Article 117409"},"PeriodicalIF":5.8,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734539","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}

{"title":"Long-term performance optimization on (Hf-Zr-Ta-Nb)C coatings above 2000 °C: Element, composition and ablation property","authors":"Xiaoxuan Li ,&nbsp;Menglin Zhang ,&nbsp;Dou Hu ,&nbsp;Songlin Chen ,&nbsp;Zhicong Yan ,&nbsp;Qiangang Fu","doi":"10.1016/j.jeurceramsoc.2025.117403","DOIUrl":"10.1016/j.jeurceramsoc.2025.117403","url":null,"abstract":"<div><div>Efficient and appropriate composition design of multi-elemental UHTCs for extremely thermal protection is in great demand and promising for carbon-based materials. Based on (Hf-Zr-Ta-Nb)C protective coating system via plasma spraying, the synergistic effects were clarified through several steps: data collection, mechanism analysis, composition optimization and experiment verification. Results showed that, (Hf_0.25Zr_0.25Ta_0.25Nb_0.25)C coating exhibited insufficient protective ability (2000 °C, &lt; 120 s), due to the similar content ratio of high-melting-point and low-melting-point phases. The decline of Ta or Nb relative content effectively improved ablation property, attributed to the supporting effect of more retained (Hf, Zr)O₂ skeleton phases. After further screening for the proper composition of Hf, Zr, Ta and Nb elements, the (Hf_0.45Zr_0.45Nb_0.1)C protective system was optimized and verified step by step, which delightfully showed long-term ablation property (2000 °C, &gt; 300 s) with nearly zero linear ablation rate.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 12","pages":"Article 117403"},"PeriodicalIF":5.8,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734538","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}

{"title":"Real-time acoustic emission detection of damage mode and failure of EB-PVD thermal barrier coating under CMAS and sea salt corrosion","authors":"Guolin Liu ,&nbsp;Wang Zhu ,&nbsp;Sai Liu ,&nbsp;Jinwei Guo ,&nbsp;Zengsheng Ma","doi":"10.1016/j.jeurceramsoc.2025.117404","DOIUrl":"10.1016/j.jeurceramsoc.2025.117404","url":null,"abstract":"<div><div>Real-time acoustic emission (AE) detection of damage mode and failure of electron beam physical vapor deposition (EB-PVD) TBCs under CMAS and sea salt corrosion is investigated. Peak frequency is the key feature parameter that distinguishes the four damage modes: surface vertical cracks (125–170 kHz), sliding interface cracks (275–345 kHz), opening interface cracks (370–450 kHz) and substrate deformation signals (50–110 kHz). The wavelet energy spectral coefficients can serve as effective feature vectors for classifying and identifying AE signals. Structural degradation and interface damage at the heating and holding stages lead to the initiation of surface and interface cracks. Opening interface cracks become most prominent during the cooling stage, due to the significant residual stress generated at the interface. Meanwhile, surface vertical cracks propagate to the coating interface and interact with the interfacial cracks, leading to the coating delamination.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 12","pages":"Article 117404"},"PeriodicalIF":5.8,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725165","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}

{"title":"Effect of molten NaCl on the wet oxidation behavior of Al2O3-modified SiC-B4C ceramics at 1300 ℃","authors":"Qingliang Shan ,&nbsp;Ziluo Lin ,&nbsp;Hongbin Zhang ,&nbsp;Xiao You ,&nbsp;Xiangkun Tian ,&nbsp;Rui Li ,&nbsp;Junjie Qian ,&nbsp;Hao Qin","doi":"10.1016/j.jeurceramsoc.2025.117396","DOIUrl":"10.1016/j.jeurceramsoc.2025.117396","url":null,"abstract":"<div><div>In this study, the oxidation properties of Al₂O₃-modified SiC-B₄C ceramics are examined at 1300 ℃ in different atmospheres. The results indicate that an appropriate amount of Al₂O₃ can repair the glass phase network structure and increase the viscosity of the borosilicate glass phase. This, in turn, inhibits the crystallization of SiO₂ and the volatilization of B₂O₃. However, excessive Al₂O₃ can damage the network structure of the borosilicate glass phase, leading to a decrease in its viscosity. Al₂O₃ modification results in reduction of 48.6 % and 55.3 % in oxidized layer thickness after oxidation for 100 h under wet-oxygen and wet-oxygen-NaCl atmosphere, respectively. In addition, Na₂O is found to be the primary factor accelerating the oxidation of B₄C-SiC in wet-oxygen-NaCl atmosphere. Under both oxidation conditions, the optimal content of Al₂O₃ is found to be 15 wt%.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117396"},"PeriodicalIF":5.8,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714988","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}

{"title":"Significant enhancement of comprehensive energy storage performance in BaTiO3-based ceramics through high-entropy design","authors":"Pan Gao ,&nbsp;Rongjie Zhang ,&nbsp;Chang Liu ,&nbsp;Hanjun Wang ,&nbsp;Wenjing Geng ,&nbsp;Jing Zhang ,&nbsp;Zixiong Sun ,&nbsp;Ye Tian ,&nbsp;Xincheng Ren","doi":"10.1016/j.jeurceramsoc.2025.117401","DOIUrl":"10.1016/j.jeurceramsoc.2025.117401","url":null,"abstract":"<div><div>Relaxor ferroelectric oxides with the feature of polar nanoregions (PNRs) have attracted extensive attention due to their unique structure and physical properties, which can be realized by disrupting the long-range ferroelectric ordering through enhancing composition disorder. To overcome the limitations of traditional dielectric materials for energy storage, great efforts have been made to design new high-entropy compounds for high performance dielectric capacitors, typically through substitutional doping that introduces local chemical and structural disorder. In this work, high-entropy perovskite oxides (Bi_0.2Na_0.2Ba_0.2Ca_0.2Sr_0.2)TiO₃ (BNBSCT), (Bi_0.2K_0.2Ba_0.2Ca_0.2Sr_0.2)TiO₃ (BKBSCT) and (La_0.2Li_0.2Ba_0.2Ca_0.2Sr_0.2)TiO₃ (LLBSCT) ceramics are proposed to significantly improve the energy storage performance of BaTiO₃ ceramic by increasing the configurational entropy. The entropy-assisted synthesis approach, having A-site ions with different valence states and radii, can significantly increase the chemical disorder and lattice distortion of the high-entropy ceramics, resulting in strong local polar fluctuations which are found to influence the dielectric relaxor behavior, phase transitions and ferroelectric property. As a result, all the high-entropy ceramics exhibit higher maximum polarization (<em>P</em>_<em>max</em>) and smaller remnant polarization (<em>P</em>_r) values. Furthermore, it is found that a combination of relatively high <em>P</em>_max, low <em>P</em>_r and high dielectric breakdown strength (DBS) ensures that the LLBSCT high-entropy ceramic exhibits excellent recoverable energy density <em>W</em>_rec of 5.16 J/cm³, energy storage efficiency <em>η</em> of 88 %, and eminent charging-discharging capability (e.g., ultra-short discharge time t_0.9 ∼ 68 ns, current density <em>C</em>_D ∼ 716.51 A/cm² and power density <em>P</em>_D ∼ 85.98 MW/cm³ under an electric field of 240 kV/cm). Therefore, this work demonstrates that the high-entropy-assisted strategy provides a simple and effective approach for designing novel dielectric ceramic capacitors with superior energy-storage performance.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 12","pages":"Article 117401"},"PeriodicalIF":5.8,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739879","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}

{"title":"Stress modulated Pb-cation displacement to strengthen polarization switching in PbZrO3 antiferroelectric films for energy storage","authors":"Dongxu Li ,&nbsp;Feng Peng ,&nbsp;Xiangyu Meng ,&nbsp;Zhonghua Yao ,&nbsp;Qinghu Guo ,&nbsp;Zongyang Shen ,&nbsp;Minghe Cao ,&nbsp;Hanxing Liu ,&nbsp;Hua Hao","doi":"10.1016/j.jeurceramsoc.2025.117400","DOIUrl":"10.1016/j.jeurceramsoc.2025.117400","url":null,"abstract":"<div><div>Antiferroelectric films are promising electrical/thermal switch candidates due to their fast polarization switching characteristics. However, the internal mechanism of stress-modulated polarization switching in antiferroelectric films from the atomic scale is not fully understood, which limits their energy/information storage. Herein, the relationship between residual stress-induced Pb-cation displacement and polarization switching in antiferroelectric PbZrO₃ (PZO) films is comprehensively investigated. It is found that compressive stress relaxes, mobility of Pb-cation enhances, and double hysteresis loop characteristics gradually become obvious as thickness increases. The polarization switching of PZO films with high compressive stress slightly changes under external temperature- and frequency-field stimulus indicating its strong phase transition stability. For the leakage mechanism, a space charge-limited current (SCLC) for 2-layer (75-nm) and 4-layer (170-nm) PZO transforms into mixed multiple effect for other PZO films at low electric field, and the Fowler-Nordheim tunneling (FN) dominates all PZO films with further increasing electric field. This work builds a close correlation between stress-modulated Pb-cation displacement and polarization switching in PZO films and advance the research of designing new antiferroelectric materials to achieve high energy storage capability.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 12","pages":"Article 117400"},"PeriodicalIF":5.8,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734540","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}

{"title":"Synthesis and structure formation of multi-cation A2B2O7 ceramics with Nb5 +, Mo6+, and Sr2+ additives","authors":"Pan Tan ,&nbsp;Zezhen Wang ,&nbsp;Yuhong Li ,&nbsp;Dongyan Yang","doi":"10.1016/j.jeurceramsoc.2025.117383","DOIUrl":"10.1016/j.jeurceramsoc.2025.117383","url":null,"abstract":"<div><div>The key issue for complex high-level waste immobilization has been addressed through the synthesis of multi-cation A₂B₂O₇-type ceramics. This study investigates the structure, micromorphology, chemical state, and performance of samples composed of pyrochlore and fluorite, influenced by different cation species. An increase in the number of cation species promotes the formation of disordered fluorite. The incorporation of cations such as Nb⁵⁺, Mo⁶⁺, and Sr²⁺ into the composition (Gd_1/5Nd_1/5Sm_1/5La_1/5Eu_1/5)₂(Hf_1/5Zr_1/5Ti_1/5Ce_1/5Sn_1/5)₂O₇ elucidates the impact of cation variety on structure formation. Irrespective of its oxidation state, Ce consistently favors the generation of pyrochlore. The introduction of Nb⁵⁺ enhances pyrochlore formation, while the addition of Sr²⁺ and Mo⁶⁺ leads to the formation of perovskite phases with contents of 9.2 % and 23.1 %, respectively. Furthermore, the presence of multiple phases induces porosity in the ceramics, resulting in decreased density and increased water absorption. This study provides insights into the complex high-level waste immobilization.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117383"},"PeriodicalIF":5.8,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725444","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}

{"title":"Degradation of YSZ thermal barrier coatings by CMAS and CMAS-Na2SO4 between 1250°C and 1350°C","authors":"Mengfan Dou,&nbsp;Wei Gao,&nbsp;Ting Xue,&nbsp;Dongting Wu,&nbsp;Yong Zou,&nbsp;Yongang Zhang","doi":"10.1016/j.jeurceramsoc.2025.117405","DOIUrl":"10.1016/j.jeurceramsoc.2025.117405","url":null,"abstract":"<div><div>Calcium-magnesium-aluminum-silicate (CMAS) corrosion attack induces degradation and failure of thermal barrier coatings (TBCs) readily. In this study, the degradation behavior of plasma-sprayed 7YSZ TBCs against CMAS and CMAS-Na₂SO₄ (abbreviated as CMAS-S) corrosive medium between 1250 °C and 1350 °C was comprehensively investigated. The higher corrosion temperature promoted the initial spreading of CMAS and CMAS-S on TBCs induced by the decreased viscosity and improved wettability of the glassy melt. The obvious crystallization inside CMAS-S restricted the initial spreading at lower temperatures of 1250 °C and 1300 °C, while the smaller viscosity of CMAS-S dominated spreading at a higher temperature of 1350 °C. As for prolonged corrosion duration, higher corrosion temperatures intensified coating bending and glass melt infiltration. In particular, the addition of Na₂SO₄ salt into CMAS severely degraded coating microstructure due to the decreased viscosity, facilitating CMAS infiltration and coating delamination.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117405"},"PeriodicalIF":5.8,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715295","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}

{"title":"All-ceramic solid oxide fuel cells utilizing phase-inversion derived scaffolds and impregnated nanoparticles as cathodes","authors":"Congcong Huang ,&nbsp;Jiahong Hu ,&nbsp;Jianhua Huang ,&nbsp;Hailin Zhan ,&nbsp;Louis Winnubst ,&nbsp;Chusheng Chen","doi":"10.1016/j.jeurceramsoc.2025.117399","DOIUrl":"10.1016/j.jeurceramsoc.2025.117399","url":null,"abstract":"<div><div>Solid oxide fuel cells (SOFCs) supported on ceramic cathodes exhibit better redox stability and allow for a broader selection of anode materials compared to those supported on Ni-yttria stabilized zirconia (YSZ) cermet anodes. In the present study, a cathode-supported all-ceramic SOFC was investigated. The cathode consisted of a phase-inversion derived porous YSZ scaffold impregnated with LaCoO₃ (LCO) nanoparticles of optimal loading 15 wt%. The anode was composed of a thin porous YSZ scaffold impregnated with Sr_1.9Fe_1.4Ni_0.1Mo_0.5O_6-δ (SFNM) nanoparticles of optimal loading 40 wt%. An SOFC featuring a 400 μm thick LCO@YSZ cathode, a 10 μm thick YSZ electrolyte, and a 30 μm thick SFNM@YSZ anode, achieved a maximum power density of 1084 mW•cm⁻² at 800 °C and 350 mW•cm⁻² at 650 °C. The cell with an LCO-Gd_0.1Ce_0.9O_2-δ composite cathode exhibited improved stability compared to that with the LCO single-phase cathode when operated in potentiostatic mode at 650 °C.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 11","pages":"Article 117399"},"PeriodicalIF":5.8,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705133","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}