Pub Date : 2025-03-06DOI: 10.1016/j.jeurceramsoc.2025.117355
Antonio Vinci, Matteo Mor, Simone Failla, Pietro Galizia, Luca Zoli, Diletta Sciti
Lightweight carbon fibre reinforced B4C/TiB2 composites with varying B4C contents and fibre gradients were produced by slurry infiltration and sintering for the first time. Tuning the B4C content allowed to adjust the fibre/matrix interfacial strength, leading to different fracture behaviours: for a B4C content of 75 %, the fibre/matrix interface was relatively weak and the composite had significantly high fracture toughness, whereas higher TiB2 contents led to a denser matrix, stronger interface and low degree of delamination. Even though the fracture toughness was considerably high, the addition of Carbon fibres lowered the hardness down to ≈ 4 GPa. Therefore, an additional composite with a fibre gradient was fabricated to demonstrate the feasibility of combining a high fibre content in the inner layer with a harder layer on the outside, reaching hardness values of ≈ 27 GPa.
{"title":"Novel CMCs based on B4C-TiB2 blends and carbon fibres","authors":"Antonio Vinci, Matteo Mor, Simone Failla, Pietro Galizia, Luca Zoli, Diletta Sciti","doi":"10.1016/j.jeurceramsoc.2025.117355","DOIUrl":"10.1016/j.jeurceramsoc.2025.117355","url":null,"abstract":"<div><div>Lightweight carbon fibre reinforced B<sub>4</sub>C/TiB<sub>2</sub> composites with varying B<sub>4</sub>C contents and fibre gradients were produced by slurry infiltration and sintering for the first time. Tuning the B<sub>4</sub>C content allowed to adjust the fibre/matrix interfacial strength, leading to different fracture behaviours: for a B<sub>4</sub>C content of 75 %, the fibre/matrix interface was relatively weak and the composite had significantly high fracture toughness, whereas higher TiB<sub>2</sub> contents led to a denser matrix, stronger interface and low degree of delamination. Even though the fracture toughness was considerably high, the addition of Carbon fibres lowered the hardness down to ≈ 4 GPa. Therefore, an additional composite with a fibre gradient was fabricated to demonstrate the feasibility of combining a high fibre content in the inner layer with a harder layer on the outside, reaching hardness values of ≈ 27 GPa.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117355"},"PeriodicalIF":5.8,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580440","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}
Pub Date : 2025-03-06DOI: 10.1016/j.jeurceramsoc.2025.117354
Kaifei Fan, Hongkang Ou, Xuemeng Zhang, Jia Sun, Hejun Li
Advanced aero-engine have made environmental barrier coatings work in an increasingly harsh service atmosphere. In this work, the water-vapor corrosion behaviors up to 200 h at 1500 °C of Yb2Si2O7-Al2O3 coatings prepared using core-shell structured powders were explored. Results showed that the Al2O3 shell hindered the deposition of Yb2SiO5 secondary phase in the sprayed coating due to the low vapor partial pressure of substances containing Al. During corrosion, the in-situ consumption of Al2O3 in the coating actualized the premature decrease of Yb2SiO5, and generated the aluminosilicate, ultimately reducing the maximus tensile stress by about 32 %. Moreover, the external diffusion of Al, activated the formation of protective Yb3Al5O12 reaction layer, instead of porous Yb2SiO5 layer on Yb2Si2O7-Al2O3 coating, achieving a lower mass loss than the pristine Yb2Si2O7 coating, indicating an improved durability of Yb2Si2O7-Al2O3 coating.
{"title":"Long term durability against water vapor corrosion at 1500 °C for environmental barrier coating modified by alumina","authors":"Kaifei Fan, Hongkang Ou, Xuemeng Zhang, Jia Sun, Hejun Li","doi":"10.1016/j.jeurceramsoc.2025.117354","DOIUrl":"10.1016/j.jeurceramsoc.2025.117354","url":null,"abstract":"<div><div>Advanced aero-engine have made environmental barrier coatings work in an increasingly harsh service atmosphere. In this work, the water-vapor corrosion behaviors up to 200 h at 1500 °C of Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>-Al<sub>2</sub>O<sub>3</sub> coatings prepared using core-shell structured powders were explored. Results showed that the Al<sub>2</sub>O<sub>3</sub> shell hindered the deposition of Yb<sub>2</sub>SiO<sub>5</sub> secondary phase in the sprayed coating due to the low vapor partial pressure of substances containing Al. During corrosion, the <em>in-situ</em> consumption of Al<sub>2</sub>O<sub>3</sub> in the coating actualized the premature decrease of Yb<sub>2</sub>SiO<sub>5</sub>, and generated the aluminosilicate, ultimately reducing the maximus tensile stress by about 32 %. Moreover, the external diffusion of Al, activated the formation of protective Yb<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> reaction layer, instead of porous Yb<sub>2</sub>SiO<sub>5</sub> layer on Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>-Al<sub>2</sub>O<sub>3</sub> coating, achieving a lower mass loss than the pristine Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> coating, indicating an improved durability of Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>-Al<sub>2</sub>O<sub>3</sub> coating.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117354"},"PeriodicalIF":5.8,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637672","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}
Pub Date : 2025-03-05DOI: 10.1016/j.jeurceramsoc.2025.117353
Emilija Nidžović , Branko Matović , Peter Tatarko , Naser Hosseini , Ondrej Hanzel , Zdeněk Chlup , Stevan Dimitrijević , Lidija Radovanović , Aleksandra Dapčević , Marija Prekajski Đorđević
The self-propagating room temperature method was utilized to synthesize high-entropy spinel oxides (HESOs): (Co,Cr,Fe,Mn,Ni)3O4-δ, (Mg,Cr,Fe,Mn,Ni)3O4-δ, (Mg,Co,Fe,Cr,Mn)3O4-δ, (Mn,Zn,Fe,Ni,Cr)3O4-δ, and (Co,Mn,Zn,Fe,Cr)3O4-δ. After thermal treatment at 1000 °C, XRD analysis confirmed their single-phased spinel structure. Densification by spark plasma sintering was successfully used for the first time on HESOs, resulting in relative densities from 94 % to 99 % while retaining the spinel structure. SEM/EDS mapping displayed a homogenous, dense microstructure with minimal porosity. (Mn,Zn,Fe,Ni,Cr)3O4-δ displayed the highest bending strength (171.5 MPa) and Young’s modulus (188 GPa). (Mg,Co,Fe,Cr,Mn)3O4-δ demonstrated the highest hardness (8.8 GPa), while (Mg,Cr,Fe,Mn,Ni)3O4-δ exhibited the highest indentation fracture toughness (1.5 MPa m–1/2). The lowest thermal diffusivity (0.67 – 0.51 mm2 s–1) was recorded for (Co,Mn,Zn,Fe,Cr)3O4-δ, while (Co,Cr,Fe,Mn,Ni)3O4-δ, had the highest thermal diffusivity (0.82 – 0.58 mm2 s–1). The study demonstrated a simple and efficacious method of synthesizing and densifying HESOs with structural, mechanical, and thermal properties favourable for different applications.
{"title":"High-entropy spinel oxides: Self-propagating synthesis and densification by spark plasma sintering","authors":"Emilija Nidžović , Branko Matović , Peter Tatarko , Naser Hosseini , Ondrej Hanzel , Zdeněk Chlup , Stevan Dimitrijević , Lidija Radovanović , Aleksandra Dapčević , Marija Prekajski Đorđević","doi":"10.1016/j.jeurceramsoc.2025.117353","DOIUrl":"10.1016/j.jeurceramsoc.2025.117353","url":null,"abstract":"<div><div>The self-propagating room temperature method was utilized to synthesize high-entropy spinel oxides (HESOs): (Co,Cr,Fe,Mn,Ni)<sub>3</sub>O<sub>4-δ</sub>, (Mg,Cr,Fe,Mn,Ni)<sub>3</sub>O<sub>4-δ</sub>, (Mg,Co,Fe,Cr,Mn)<sub>3</sub>O<sub>4-δ</sub>, (Mn,Zn,Fe,Ni,Cr)<sub>3</sub>O<sub>4-δ</sub>, and (Co,Mn,Zn,Fe,Cr)<sub>3</sub>O<sub>4-δ</sub>. After thermal treatment at 1000 °C, XRD analysis confirmed their single-phased spinel<span><math><mrow><mspace></mspace><mo>(</mo><mi>Fd</mi><mover><mrow><mn>3</mn></mrow><mo>¯</mo></mover><mi>m</mi><mo>)</mo></mrow></math></span> structure. Densification by spark plasma sintering was successfully used for the first time on HESOs, resulting in relative densities from 94 % to 99 % while retaining the spinel structure. SEM/EDS mapping displayed a homogenous, dense microstructure with minimal porosity. (Mn,Zn,Fe,Ni,Cr)<sub>3</sub>O<sub>4-δ</sub> displayed the highest bending strength (171.5 MPa) and Young’s modulus (188 GPa). (Mg,Co,Fe,Cr<sub>,</sub>Mn)<sub>3</sub>O<sub>4-δ</sub> demonstrated the highest hardness (8.8 GPa), while (Mg,Cr,Fe,Mn,Ni)<sub>3</sub>O<sub>4-δ</sub> exhibited the highest indentation fracture toughness (1.5 MPa m<sup>–1/2</sup>). The lowest thermal diffusivity (0.67 – 0.51 mm<sup>2</sup> s<sup>–1</sup>) was recorded for (Co,Mn,Zn,Fe,Cr)<sub>3</sub>O<sub>4-δ</sub>, while (Co,Cr,Fe,Mn,Ni)<sub>3</sub>O<sub>4-δ</sub>, had the highest thermal diffusivity (0.82 – 0.58 mm<sup>2</sup> s<sup>–1</sup>). The study demonstrated a simple and efficacious method of synthesizing and densifying HESOs with structural, mechanical, and thermal properties favourable for different applications.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117353"},"PeriodicalIF":5.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562593","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}
Pub Date : 2025-03-05DOI: 10.1016/j.jeurceramsoc.2025.117351
Wenzhe Yan , Xuanxin Tian , Shifei Liang , Yu Liang , Rujie He , Shigang Ai
Determining the B-basis value for SiC/SiC composites traditionally requires extensive tensile testing, which is both costly and time-consuming. This study proposes a hybrid method that combines limited tensile test data with digital twin model analysis to efficiently determine the tensile B-basis value of SiC/SiC composites. Using micro-computed tomography (µCT) and an image-based finite element modeling approach, 30 digital twin models were constructed to simulate tensile behavior, and the simulation results were validated against experimental data to ensure accuracy. By integrating physical testing with simulation analysis, high-confidence material strength data was obtained, successfully determining the tensile B-basis value for SiC/SiC composites. The results demonstrate that this hybrid method significantly reduces the need for extensive tensile testing while maintaining high accuracy, providing an efficient and cost-effective solution for determining the tensile B-basis value of woven SiC/SiC composites, particularly in applications where material reliability is critical.
{"title":"Efficient hybrid tensile B-basis value estimation for SiC/SiC composites using sparse testing and high-fidelity digital twin models","authors":"Wenzhe Yan , Xuanxin Tian , Shifei Liang , Yu Liang , Rujie He , Shigang Ai","doi":"10.1016/j.jeurceramsoc.2025.117351","DOIUrl":"10.1016/j.jeurceramsoc.2025.117351","url":null,"abstract":"<div><div>Determining the B-basis value for SiC/SiC composites traditionally requires extensive tensile testing, which is both costly and time-consuming. This study proposes a hybrid method that combines limited tensile test data with digital twin model analysis to efficiently determine the tensile B-basis value of SiC/SiC composites. Using micro-computed tomography (µCT) and an image-based finite element modeling approach, 30 digital twin models were constructed to simulate tensile behavior, and the simulation results were validated against experimental data to ensure accuracy. By integrating physical testing with simulation analysis, high-confidence material strength data was obtained, successfully determining the tensile B-basis value for SiC/SiC composites. The results demonstrate that this hybrid method significantly reduces the need for extensive tensile testing while maintaining high accuracy, providing an efficient and cost-effective solution for determining the tensile B-basis value of woven SiC/SiC composites, particularly in applications where material reliability is critical.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117351"},"PeriodicalIF":5.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562591","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}
Ceramic matrix composites (CMCs) are of interest for high-temperature structural applications, including use in turbine engine components. Knowledge of high temperature damage mechanisms is critical to predict the durability of these systems. SiCf/SiC minicomposite specimens were tested in tension at room temperature, and at elevated temperatures of 1200°C, 1315°C, and 1482°C, to understand the effect of temperature on the mechanical properties, damage mechanisms, and acoustic emission (AE) response. Damage initiation and accumulation was monitored using AE during tensile tests at each temperature. Temperature dependence of mechanical properties including elastic moduli, ultimate tensile strength, AE-based onset of matrix cracking, proportional limit, and crack density were investigated. The specimen toughness and ultimate tensile strength decreased with an increase in temperature. The decline in mechanical strength properties and extent of minicomposite matrix cracking as the temperature was increased was related to interactions between the specimen matrix, fiber, and interphase.
{"title":"Acoustic emission monitoring of temperature-dependent tensile behavior of unidirectional SiCf/SiC ceramic matrix composites","authors":"C.T. Brockman , A.S. Almansour , J.D. Kiser , R.K. Goldberg , P. Sarin","doi":"10.1016/j.jeurceramsoc.2025.117350","DOIUrl":"10.1016/j.jeurceramsoc.2025.117350","url":null,"abstract":"<div><div>Ceramic matrix composites (CMCs) are of interest for high-temperature structural applications, including use in turbine engine components. Knowledge of high temperature damage mechanisms is critical to predict the durability of these systems. SiC<sub>f</sub>/SiC minicomposite specimens were tested in tension at room temperature, and at elevated temperatures of 1200°C, 1315°C, and 1482°C, to understand the effect of temperature on the mechanical properties, damage mechanisms, and acoustic emission (AE) response. Damage initiation and accumulation was monitored using AE during tensile tests at each temperature. Temperature dependence of mechanical properties including elastic moduli, ultimate tensile strength, AE-based onset of matrix cracking, proportional limit, and crack density were investigated. The specimen toughness and ultimate tensile strength decreased with an increase in temperature. The decline in mechanical strength properties and extent of minicomposite matrix cracking as the temperature was increased was related to interactions between the specimen matrix, fiber, and interphase.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117350"},"PeriodicalIF":5.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629267","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}
Pub Date : 2025-03-05DOI: 10.1016/j.jeurceramsoc.2025.117330
Victor Vallejo-Otero, Nicolas Crespo-Monteiro, Emilie Gamet, Nadège Ollier, Christophe Donnet, Arnaud Valour, Yves Jourlin
Thin films of titanium nitride (TiN) are extensively utilized across various industrial sectors due to their exceptional mechanical and tribological properties, as well as their high chemical and thermal stability. Additionally, their plasmonic behavior makes them highly promising for optical metasurfaces and innovative plasmonic materials mainly in the visible (around 600–780 nm) and in the near-infrared (NIR) range wavelength according to the permittivity values giving rise to metallic behavior in the considered wavelength range. The layers of TiN can be produced by using reactive deposition technique such as chemical vapor deposition or physical vapor deposition but the process of thermal nitridation by gas is also largely used, in particular to coat wide surfaces. Usually, this process involves heating titanium or titanium alloys at high temperature in a nitrogen atmosphere to form TiN. However, the process of forming TiN by nitriding titanium oxide (TiO2) is a promising alternative that offers many advantages (the possibility to use sol-gel and a control over the nitrogen incorporation) but is not yet well understood and documented. In this review, the nitriding mechanisms of TiO2 by ammonolysis and by carbothermal nitriding will be presented and compare. Different nitridation processes will then be described and the electrical, mechanical, optical and plasmonic properties of the nitride TiN films will be compared to the other deposition techniques. The applications and the perspectives of this type of nitridation such as formation of TiN metasurfaces or sustainable process of elaboration of TiN will be presented as well.
{"title":"Advancements in nitridation of TiO2 layers: Mechanisms, techniques, and applications for TiN thin films","authors":"Victor Vallejo-Otero, Nicolas Crespo-Monteiro, Emilie Gamet, Nadège Ollier, Christophe Donnet, Arnaud Valour, Yves Jourlin","doi":"10.1016/j.jeurceramsoc.2025.117330","DOIUrl":"10.1016/j.jeurceramsoc.2025.117330","url":null,"abstract":"<div><div>Thin films of titanium nitride (TiN) are extensively utilized across various industrial sectors due to their exceptional mechanical and tribological properties, as well as their high chemical and thermal stability. Additionally, their plasmonic behavior makes them highly promising for optical metasurfaces and innovative plasmonic materials mainly in the visible (around 600–780 nm) and in the near-infrared (NIR) range wavelength according to the permittivity values giving rise to metallic behavior in the considered wavelength range. The layers of TiN can be produced by using reactive deposition technique such as chemical vapor deposition or physical vapor deposition but the process of thermal nitridation by gas is also largely used, in particular to coat wide surfaces. Usually, this process involves heating titanium or titanium alloys at high temperature in a nitrogen atmosphere to form TiN. However, the process of forming TiN by nitriding titanium oxide (TiO<sub>2</sub>) is a promising alternative that offers many advantages (the possibility to use sol-gel and a control over the nitrogen incorporation) but is not yet well understood and documented. In this review, the nitriding mechanisms of TiO<sub>2</sub> by ammonolysis and by carbothermal nitriding will be presented and compare. Different nitridation processes will then be described and the electrical, mechanical, optical and plasmonic properties of the nitride TiN films will be compared to the other deposition techniques. The applications and the perspectives of this type of nitridation such as formation of TiN metasurfaces or sustainable process of elaboration of TiN will be presented as well.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117330"},"PeriodicalIF":5.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580438","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}
Pub Date : 2025-03-04DOI: 10.1016/j.jeurceramsoc.2025.117349
Tianbin Zhu , Yuhang Zhang , Yawei Li , Ning Liao , Heng Wang , Yibiao Xu , Shaobai Sang , Wen Yan
Carbon-containing refractories with flake graphite are widely used in iron and steelmaking processes due to their excellent thermal shock resistance and slag resistance. In response to the growing demands for clean steel production, a low-carbon society, and efficient resource utilization, developing low carbon-containing refractories with enhanced performance has become increasingly important. However, reducing the content of flake graphite in these refractories can lead to a significant decrease in their high-temperature service performance, particularly in terms of thermal shock resistance and slag corrosion resistance. As a result, considerable efforts have been made over the past two decades to improve the properties of these refractories through the optimization of oxide aggregates, the combination of carbon sources, the modification of binders, and the incorporation of additives. This review presents a comprehensive overview of recent progress in low carbon-containing refractories, focusing on these four key aspects. Moreover, future perspectives are discussed, aiming to offer valuable insights for the continued development and application of these refractories.
{"title":"Low carbon-containing refractories for advanced iron and steelmaking: Recent progress and perspectives","authors":"Tianbin Zhu , Yuhang Zhang , Yawei Li , Ning Liao , Heng Wang , Yibiao Xu , Shaobai Sang , Wen Yan","doi":"10.1016/j.jeurceramsoc.2025.117349","DOIUrl":"10.1016/j.jeurceramsoc.2025.117349","url":null,"abstract":"<div><div>Carbon-containing refractories with flake graphite are widely used in iron and steelmaking processes due to their excellent thermal shock resistance and slag resistance. In response to the growing demands for clean steel production, a low-carbon society, and efficient resource utilization, developing low carbon-containing refractories with enhanced performance has become increasingly important. However, reducing the content of flake graphite in these refractories can lead to a significant decrease in their high-temperature service performance, particularly in terms of thermal shock resistance and slag corrosion resistance. As a result, considerable efforts have been made over the past two decades to improve the properties of these refractories through the optimization of oxide aggregates, the combination of carbon sources, the modification of binders, and the incorporation of additives. This review presents a comprehensive overview of recent progress in low carbon-containing refractories, focusing on these four key aspects. Moreover, future perspectives are discussed, aiming to offer valuable insights for the continued development and application of these refractories.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117349"},"PeriodicalIF":5.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580439","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}
Pub Date : 2025-03-04DOI: 10.1016/j.jeurceramsoc.2025.117352
Sonia Marín-Cortés , Víctor Fuertes , Aida Serrano , Jesús López-Sánchez , María Fernández-Álvarez , Sara Román-Sánchez , Marina París Ogáyar , David Muñoz , María José Cabrera , José F. Fernández , Esther Enríquez
Within the circular economy framework, developing technologies that ensure product traceability have gained increasing relevance. However, there is no traceability solution applicable to ceramic tiles, due to the high temperature used during their processing. The proposed solution is a photoluminescent (PL) ceramic pigment with (Ca,Sr)(K,Na)AlSi3O8:Eu3+ crystallizations, compatible with conventional glazes. The designed material was applied by inkjet printing on the surface of a ceramic tile and the aesthetics of the product were preserved since it remained invisible unless ultraviolet light was used. This study investigated the compositional design, processing, and photoluminescence response of the PL ceramic pigment. Finally, the tool was industrially demonstrated by fabricating a suitable ink from the PL ceramic pigment and depositing it in a ceramic tile by inkjet printing. This study opens new avenues in ceramic industry, since these findings may be applied to other ceramic pigments for the fabrication of traceability tools for ceramic tiles.
{"title":"(Ca,Sr)(K,Na)AlSi3O8:Eu3+ photoluminescent pigment for traceability applications in ceramics","authors":"Sonia Marín-Cortés , Víctor Fuertes , Aida Serrano , Jesús López-Sánchez , María Fernández-Álvarez , Sara Román-Sánchez , Marina París Ogáyar , David Muñoz , María José Cabrera , José F. Fernández , Esther Enríquez","doi":"10.1016/j.jeurceramsoc.2025.117352","DOIUrl":"10.1016/j.jeurceramsoc.2025.117352","url":null,"abstract":"<div><div>Within the circular economy framework, developing technologies that ensure product traceability have gained increasing relevance. However, there is no traceability solution applicable to ceramic tiles, due to the high temperature used during their processing. The proposed solution is a photoluminescent (PL) ceramic pigment with (Ca,Sr)(K,Na)AlSi<sub>3</sub>O<sub>8</sub>:Eu<sup>3+</sup> crystallizations, compatible with conventional glazes. The designed material was applied by inkjet printing on the surface of a ceramic tile and the aesthetics of the product were preserved since it remained invisible unless ultraviolet light was used. This study investigated the compositional design, processing, and photoluminescence response of the PL ceramic pigment. Finally, the tool was industrially demonstrated by fabricating a suitable ink from the PL ceramic pigment and depositing it in a ceramic tile by inkjet printing. This study opens new avenues in ceramic industry, since these findings may be applied to other ceramic pigments for the fabrication of traceability tools for ceramic tiles.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117352"},"PeriodicalIF":5.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562592","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}
Pub Date : 2025-03-04DOI: 10.1016/j.jeurceramsoc.2025.117346
Bing Yang , Bo Wang , Futian Zhang , Jing Chen , Xuzhuo Sun , Bo Li , Mengxi Tan , Lushan Ma , Yunfeng Tian , Bo Chi
Reversible symmetric solid oxide cells (RSSOCs) offer a promising solution for bidirectional electric-hydrogen conversion, enabling integrated energy storage and conversion within a single device. However, their symmetric electrode design, which requires multifunctional catalytic activity, continues to face challenges in terms of both activity and stability. Here, we overcome these challenges by employing an innovative A-site defect and B-site Pd doping strategy in Pr0.2Sr0.8Co0.2Fe0.8O3-δ (PSCF), which results in the in-situ exsolution of B-site metal elements. This approach results in the formation of Pd and Co-Fe nanoparticles, which significantly enhance the electrocatalytic performance of the symmetric electrodes. Electrochemical test shows that defect-engineered PSCFPd with 10 % A-site deficiency achieves a peak power density of 0.830 W cm−2 in fuel cell mode at 850 °C and a current density of 1.64 A cm−2 at 1.5 V in electrolysis mode (50 % H₂O). In addition, the cell demonstrates excellent stability, maintaining performance over 210 h in fuel cell mode and 168 h in electrolysis mode at 800 °C. First-principles calculations further confirm that the defect structure enhances B-site metal migration to the surface, promoting oxygen vacancy formation and mitigating Sr segregation, thereby improving both performance and durability. This work provides a new avenue for the design of high performance electrodes in RSSOCs.
{"title":"Synergistic defect and doping engineering ensures high-performance symmetric solid oxide cells electrode","authors":"Bing Yang , Bo Wang , Futian Zhang , Jing Chen , Xuzhuo Sun , Bo Li , Mengxi Tan , Lushan Ma , Yunfeng Tian , Bo Chi","doi":"10.1016/j.jeurceramsoc.2025.117346","DOIUrl":"10.1016/j.jeurceramsoc.2025.117346","url":null,"abstract":"<div><div>Reversible symmetric solid oxide cells (RSSOCs) offer a promising solution for bidirectional electric-hydrogen conversion, enabling integrated energy storage and conversion within a single device. However, their symmetric electrode design, which requires multifunctional catalytic activity, continues to face challenges in terms of both activity and stability. Here, we overcome these challenges by employing an innovative A-site defect and B-site Pd doping strategy in Pr<sub>0.2</sub>Sr<sub>0.8</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3-δ</sub> (PSCF), which results in the in-situ exsolution of B-site metal elements. This approach results in the formation of Pd and Co-Fe nanoparticles, which significantly enhance the electrocatalytic performance of the symmetric electrodes. Electrochemical test shows that defect-engineered PSCFPd with 10 % A-site deficiency achieves a peak power density of 0.830 W cm<sup>−2</sup> in fuel cell mode at 850 °C and a current density of 1.64 A cm<sup>−2</sup> at 1.5 V in electrolysis mode (50 % H₂O). In addition, the cell demonstrates excellent stability, maintaining performance over 210 h in fuel cell mode and 168 h in electrolysis mode at 800 °C. First-principles calculations further confirm that the defect structure enhances B-site metal migration to the surface, promoting oxygen vacancy formation and mitigating Sr segregation, thereby improving both performance and durability. This work provides a new avenue for the design of high performance electrodes in RSSOCs.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117346"},"PeriodicalIF":5.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580441","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}
Pub Date : 2025-03-04DOI: 10.1016/j.jeurceramsoc.2025.117347
Daria Balcerzak , Andrés López-García , Alfonso J. Carrillo , María Balaguer , Jose Manuel Serra , Truls Norby , Ragnar Strandbakke , Maria Gazda , Sebastian L. Wachowski
We show that oxide nanoparticles (NPs) exsolve on La0.5Ba0.5-yCo1-xFexO3-δ (x = 0–1, y = 0 or 0.01) in oxidizing conditions. The phenomenon occurs only in Co-containing materials and depends on pO2 and pH2O pressures. Under dry conditions, the smallest NPs average about 30 nm, with 200–300 NPs/µm2 at pO2= 5 × 10−5 atm. For pO2= 1 atm, NP size increases to 100–200 nm, and population drops to a few to about 20 NPs/µm2 depending on A-site nonstoichiometry and x. In humid conditions, the smallest NPs around 50 nm, with a peak of 100 NPs/µm2 exsolve for pO2= 1. Transmission electron microscopy shows that exsolved NPs in La0.5Ba0.5-yCoO3-δ are Ba-O-rich. We propose defect chemistry models, indicating that exsolution is driven by oxidation reactions forming A-site vacancies, increasing exsolved material with higher pO2. We suggest that adsorbed water under humid conditions blocks nucleation sites, altering observed trends.
{"title":"Tailoring oxide nanoparticle exsolution in La0.5Ba0.5-yCo1-xFexO3-δ","authors":"Daria Balcerzak , Andrés López-García , Alfonso J. Carrillo , María Balaguer , Jose Manuel Serra , Truls Norby , Ragnar Strandbakke , Maria Gazda , Sebastian L. Wachowski","doi":"10.1016/j.jeurceramsoc.2025.117347","DOIUrl":"10.1016/j.jeurceramsoc.2025.117347","url":null,"abstract":"<div><div>We show that oxide nanoparticles (NPs) exsolve on La<sub>0.5</sub>Ba<sub>0.5-y</sub>Co<sub>1-x</sub>Fe<sub>x</sub>O<sub>3-δ</sub> (x = 0–1, y = 0 or 0.01) in oxidizing conditions. The phenomenon occurs only in Co-containing materials and depends on <em>p</em>O<sub>2</sub> and <em>p</em>H<sub>2</sub>O pressures. Under dry conditions, the smallest NPs average about 30 nm, with 200–300 NPs/µm<sup>2</sup> at <em>p</em>O<sub>2</sub>= 5 × 10<sup>−5</sup> atm. For <em>p</em>O<sub>2</sub>= 1 atm, NP size increases to 100–200 nm, and population drops to a few to about 20 NPs/µm<sup>2</sup> depending on A-site nonstoichiometry and <em>x</em>. In humid conditions, the smallest NPs around 50 nm, with a peak of 100 NPs/µm<sup>2</sup> exsolve for <em>p</em>O<sub>2</sub>= 1. Transmission electron microscopy shows that exsolved NPs in La<sub>0.5</sub>Ba<sub>0.5-y</sub>CoO<sub>3-δ</sub> are Ba-O-rich. We propose defect chemistry models, indicating that exsolution is driven by oxidation reactions forming A-site vacancies, increasing exsolved material with higher pO2. We suggest that adsorbed water under humid conditions blocks nucleation sites, altering observed trends.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 10","pages":"Article 117347"},"PeriodicalIF":5.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549148","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}
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