Ceramics International最新文献_第7页

Preparation and properties of Al2O3-SiC-C refractories using recycled Al2O3-C composite slide plates materials 利用再生Al2O3-C复合滑板材料制备Al2O3-SiC-C耐火材料及其性能

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.304

Cong Chen , Bingqiang Han , Jiawei Wei , Junlong Duan , Hutang Zhong , Ping Li , Nan Li , Junfeng Chen

{"title":"Preparation and properties of Al2O3-SiC-C refractories using recycled Al2O3-C composite slide plates materials","authors":"Cong Chen , Bingqiang Han , Jiawei Wei , Junlong Duan , Hutang Zhong , Ping Li , Nan Li , Junfeng Chen","doi":"10.1016/j.ceramint.2025.03.304","DOIUrl":"10.1016/j.ceramint.2025.03.304","url":null,"abstract":"<div><div>The short service life of existing slide plates led to significant waste of high-quality raw materials. Recycling these materials into appropriate refractories with less demanding conditions can reduce costs and extend their service life. In this study, recycled Al<sub>2</sub>O<sub>3</sub>-C composite slide plates materials (RACM) were used to prepare Al<sub>2</sub>O<sub>3</sub>-SiC-C (ASC) refractories. The influence of RACM addition on phase compositions, microstructure and properties of ASC refractories were investigated. The results showed that: The RACM promoted the formation and growth of SiC whiskers in ASC refractories, enhancing the ability of ASC refractories to resist elastic deformation and the fracture propagation. Meanwhile, the progress of reaction sintering enhanced the interface binding between aggregates and improved the consistency of the oxidation interface. The oxidation resistance behavior of ASC refractories was enhanced 6.7 % with 32 wt% RACM addition. The physical properties and oxidation resistance properties of the ASC refractories with 32 wt% RACM were the best, and could meet the performance requirements for hot metal pretreatment.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 26213-26224"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522596","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

A novel phosphate-based phosphor for multifunctional applications realized by energy transmission and color change 一种新型的磷酸盐基荧光粉，通过能量传输和颜色变化实现多功能应用

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.306

Yunfei Li , Shengda Liu , Yuqi Wang , Kai Yan , Yanli Du , Yongqin Hao , Guixia Liu

{"title":"A novel phosphate-based phosphor for multifunctional applications realized by energy transmission and color change","authors":"Yunfei Li , Shengda Liu , Yuqi Wang , Kai Yan , Yanli Du , Yongqin Hao , Guixia Liu","doi":"10.1016/j.ceramint.2025.03.306","DOIUrl":"10.1016/j.ceramint.2025.03.306","url":null,"abstract":"<div><div>The concept of healthy lighting has led to the emergence of warm white light-emitting phosphors as a prominent research focus within the lighting industry. In this study, a series of phosphors composed of Ca<sub>8</sub>ZnY(PO<sub>4</sub>)<sub>7</sub> (CZYP) doped with Dy<sup>3+</sup> and Sm<sup>3+</sup> were synthesized through the high-temperature solid-state technique. The crystal structure, optical properties, and energy transfer processes of the phosphors were systematically investigated. An effective energy transfer strategy was successfully implemented, achieving a remarkable energy transfer efficiency of 41.3 % between Dy<sup>3+</sup> and Sm<sup>3+</sup> ions when excited at 363 nm. The 365 nm UV chip was used with the synthesized phosphor to encapsulate LEDs, resulting in a low color temperature (CCT, 3438 K) and a high color rendering index (Ra, 82.1) for warm white light emission. Additionally, the emission spectrum of the phosphor satisfied the spectral criteria necessary for chlorophyll synthesis. The anti-counterfeiting of the phosphor was further investigated, leading to a multi-color switching model characterized by intuitive visualization and straightforward identification. These results suggest that the synthesized phosphors are promising for health lighting, plant lighting, and optical anti-counterfeiting applications.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 26234-26241"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522598","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

High NIR reflectance blue pigment CaCuSi4O10 prepared by using nanoscale silicon dioxide 利用纳米二氧化硅制备高近红外反射率蓝色颜料CaCuSi4O10

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.358

Irina V. Ivanova, Julia A. Deeva

引用次数: 0

Multicolor afterglow obtained by in situ synthesis of CsPbBr3 quantum dots within porous SiO2 on the surface of Sr2MgSi2O7:Eu2+,Dy3+ 在Sr2MgSi2O7:Eu2+，Dy3+表面多孔SiO2内原位合成CsPbBr3量子点获得多色余辉

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.317

Ou Hai, Peng Li, Xin An, Weikang Dong, Tong Li, Zechuan Qi, Yuanting Wu

{"title":"Multicolor afterglow obtained by in situ synthesis of CsPbBr3 quantum dots within porous SiO2 on the surface of Sr2MgSi2O7:Eu2+,Dy3+","authors":"Ou Hai, Peng Li, Xin An, Weikang Dong, Tong Li, Zechuan Qi, Yuanting Wu","doi":"10.1016/j.ceramint.2025.03.317","DOIUrl":"10.1016/j.ceramint.2025.03.317","url":null,"abstract":"<div><div>In order to broaden the application field of long afterglow materials, it is a challenge to realize high stability and multicolor properties of long afterglow materials. The photoconversion method is a condition that enables simultaneous afterglow color shifts, however, the stable and efficient photoconversion agent is an urgent problem. This study propose a strategy to synthesize CsPbBr<sub>3</sub> quantum dots (QDs) directly within porous SiO<sub>2</sub> on the surface of Sr<sub>2</sub>MgSi<sub>2</sub>O<sub>7</sub>:Eu<sup>2+</sup>,Dy<sup>3+</sup> (SMS). The resulting composites achieve a shift in emission and afterglow color from blue (about 468 nm) to green (about 520 nm), and in the UV irradiation for 8 days, the luminous intensity is almost unaffected, in the air exposure for 3 months, the luminous intensity can still be maintained at more than 80 % of the initial value. Since the synthesized composite material is a powder, it can be mixed with various media. Composite materials can be homogeneously mixed with coatings, resulting in coatings with a variety of luminescent colors and producing effective multicolor luminescence, which has significant potential in the field of luminescent coatings and anti-counterfeiting.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 26359-26369"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522565","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

Tribocorrosion behaviors and mechanisms of in-situ TiC/TiB/Cr2B reinforced CrMnFeCoNi high-entropy alloy composite coatings prepared by laser cladding 激光熔覆原位TiC/TiB/Cr2B增强crmnnfeconi高熵合金复合涂层的摩擦腐蚀行为及机理

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.355

Jiajun Guo , Wei Xie , Jibin Pu

{"title":"Tribocorrosion behaviors and mechanisms of in-situ TiC/TiB/Cr2B reinforced CrMnFeCoNi high-entropy alloy composite coatings prepared by laser cladding","authors":"Jiajun Guo , Wei Xie , Jibin Pu","doi":"10.1016/j.ceramint.2025.03.355","DOIUrl":"10.1016/j.ceramint.2025.03.355","url":null,"abstract":"<div><div>Tribocorrosion has long been a challenge in the field of marine protection. To address this challenge, this study used laser cladding in-situ synthesis to fabricate CrMnFeCoNi high-entropy alloy composite coatings containing multiple ceramic reinforcement phases. By analyzing the microstructure, microhardness, electrochemical properties, and tribocorrosion performance of the cladding layer, the effects of different B<sub>4</sub>C and Ti mixture additions (10 %, 20 %, and 30 %) on the high-entropy alloy composite coatings were studied. The results show that the synergistic effect of carbides and borides significantly enhances the passivation ability of the composite material's surface. The C20 coating with a 20 % mixture addition exhibited the best corrosion resistance. The precipitation of TiC particles not only suppressed dislocation motion but also effectively blocked corrosion pathways. When the mixture addition reached 30 %, the C30 coating achieved the highest microhardness of 380.35 HV<sub>0.2</sub>, demonstrating the optimal tribocorrosion resistance. This study provides both theoretical and practical guidance for the service performance of high-entropy alloy composite coatings under coupled tribocorrosion conditions in harsh marine environments.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 26742-26756"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522675","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

Combustion synthesis of Si3N4 powders with high sintering activity under low nitrogen pressures 低氮压下燃烧合成高烧结活性氮化硅粉体

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.257

Jiale Zhang, Jianjun Chen, Jinyu Guo, Hao Chen, Longbo Xue, Chenyu Li

{"title":"Combustion synthesis of Si3N4 powders with high sintering activity under low nitrogen pressures","authors":"Jiale Zhang, Jianjun Chen, Jinyu Guo, Hao Chen, Longbo Xue, Chenyu Li","doi":"10.1016/j.ceramint.2025.03.257","DOIUrl":"10.1016/j.ceramint.2025.03.257","url":null,"abstract":"<div><div>In this study, silicon nitride (Si<sub>3</sub>N<sub>4</sub>) powders with high α-phase content and rod-like crystal morphologies were synthesized via self-propagating high-temperature synthesis (SHS) in a low-pressure nitrogen atmosphere (0.2 MPa), using silicon and Si<sub>3</sub>N<sub>4</sub> powders as reactants, with magnesium powder serving as an igniter. The influence of different ratios of silicon to silicon nitride on the phase composition, crystal morphology, and sintering activity of the synthesized Si<sub>3</sub>N<sub>4</sub> powders was systematically investigated. The results demonstrated that controlling the silicon-to-silicon nitride ratio under low-pressure conditions significantly affects the formation of α-phase Si<sub>3</sub>N<sub>4</sub> and the resulting microstructure of the powders. A low-pressure nitrogen atmosphere was adopted based on kinetic and thermodynamic analyses, providing a feasible environment for SHS. Notably, in situ formation of magnesium nitride (MgSiN<sub>2</sub>) during the reaction not only acted as an effective sintering aid but also improved the thermal conductivity of the resulting Si<sub>3</sub>N<sub>4</sub> ceramic. The powder produced from a reaction using a raw material composition of 65 % Si minimizes both silicon infiltration and melting to the greatest extent, and consequently, the sintered silicon nitride ceramics exhibit the highest thermal conductivity. The low-pressure environment effectively moderated the reaction rate and temperature, promoting the formation of fine α-phase Si<sub>3</sub>N<sub>4</sub> particles with rod-like morphologies. This innovative method offers a cost-effective and environmentally friendly approach for producing high-quality Si<sub>3</sub>N<sub>4</sub> powders with high sintering activity.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 25745-25753"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522321","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

Sintering, high-temperature stability, and thermal conductivity of (Zr, Nb, Hf, Ta)(C, N) high-entropy carbonitrides （Zr, Nb, Hf, Ta）（C， N）高熵碳氮化物的烧结、高温稳定性和导热性

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.155

Yang Bai , Yuxin Liang , Juan Bi , Baoning Cui , Zhaopeng Lu , Huangxuan Wang , Xixi You , Bangsheng Li

{"title":"Sintering, high-temperature stability, and thermal conductivity of (Zr, Nb, Hf, Ta)(C, N) high-entropy carbonitrides","authors":"Yang Bai , Yuxin Liang , Juan Bi , Baoning Cui , Zhaopeng Lu , Huangxuan Wang , Xixi You , Bangsheng Li","doi":"10.1016/j.ceramint.2025.03.155","DOIUrl":"10.1016/j.ceramint.2025.03.155","url":null,"abstract":"<div><div>High-entropy carbonitrides (HECNs), a new class of high-performance ceramics, hold great potential for high-temperature structural materials and thermal protection systems due to their excellent thermal stability and properties. For its better application, it is important to optimize the sintering temperature of HECNs and deeply investigate its thermal conductivity behavior. This study systematically investigates the thermodynamic stability, formation ability, and thermal properties of (ZrHfNbTa)C<sub>x</sub>N<sub>1-x</sub> through first-principles calculations and experimental validation. Thermodynamic calculations reveal that nitrogen incorporation reduces the sintering temperature required to achieve a stable high-entropy solid solution. Experimental validation by spark plasma sintering (SPS) shows that the sintering temperature can be reduced from 1950 °C to 1700 °C. Ab initio molecular dynamics (AIMD) simulations demonstrate that HECNs retain structural integrity at 1773 K. Thermal conductivity tests show an increase with temperature, but a decrease with higher nitrogen content, which is mainly caused by the increased scattering of phonons resulting from lattice distortions. The Debye-Callaway model fitting further elucidates the underlying thermal conductivity mechanisms. In summary, nitrogen incorporation enhances the thermodynamic stability and reduces thermal conductivity of HECN ceramics, providing valuable theoretical and experimental support for their application in high-temperature structural materials and thermal protection systems.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 24731-24739"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517683","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

Local topographical changes of Ge-(Sb)-Se thin films induced by direct electron beam writing 直接电子束写入对Ge-(Sb)- se薄膜局部形貌的影响

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.128

J. Smolík , P. Kutálek , E. Samsonova , E. Černošková , P. Knotek , Z. Černošek , R. Todorov , T. Plecháček , J. Schwarz , L. Tichý

{"title":"Local topographical changes of Ge-(Sb)-Se thin films induced by direct electron beam writing","authors":"J. Smolík , P. Kutálek , E. Samsonova , E. Černošková , P. Knotek , Z. Černošek , R. Todorov , T. Plecháček , J. Schwarz , L. Tichý","doi":"10.1016/j.ceramint.2025.03.128","DOIUrl":"10.1016/j.ceramint.2025.03.128","url":null,"abstract":"<div><div>Local topographical changes are studied in Ge-Se and Ge-Sb-Se thin films induced by focused electron beam exposure. The results show that under comparable experimental conditions, the Ge<sub>29.2</sub>Se<sub>70.8</sub> film undergoes expansion, while in Ge-Sb-Se compositions (Ge<sub>17.9</sub>Sb<sub>16.6</sub>Se<sub>65.5</sub>, Ge<sub>11.4</sub>Sb<sub>22.9</sub>Se<sub>65.7</sub>), the material is preferentially removed instead. Variations in electron beam parameters, including exposure time, spot size, and magnification, as well as the thermodynamic state of the thin films (virgin vs. annealed), are studied to characterize their influence on material response (height/depth of micro-objects). Force spectroscopy (FS), atomic force microscopy (AFM), energy dispersive X-ray analysis (EDX) and digital holographic microscopy (DHM) are used to characterize the micro-objects created and to identify possible changes in stiffness and chemical composition of the films studied. Observed findings demonstrate that electron beam direct writing can be used to locally modify the surface of Ge-(Sb)-Se thin films, enabling the fabrication of micro-optical elements such as microlenses.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 24450-24458"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518713","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

Electric field-induced alignment and orientation of dielectric fibers: Mechanisms, modelling, and experimental analysis 电介质纤维的电场诱导排列和取向：机制、模型和实验分析

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.136

Wenjie Li , Yuncong Jiang , Lianfeng Wu , Chen Wang , Hang Liu , Siyi Jiang , Xin Zhou , Yuwen Mu , Lingfeng Xu , Xiaodong He , Mingwei Li , Fei He

{"title":"Electric field-induced alignment and orientation of dielectric fibers: Mechanisms, modelling, and experimental analysis","authors":"Wenjie Li , Yuncong Jiang , Lianfeng Wu , Chen Wang , Hang Liu , Siyi Jiang , Xin Zhou , Yuwen Mu , Lingfeng Xu , Xiaodong He , Mingwei Li , Fei He","doi":"10.1016/j.ceramint.2025.03.136","DOIUrl":"10.1016/j.ceramint.2025.03.136","url":null,"abstract":"<div><div>Electric field-induced alignment of dielectric fibers (DFs) is a promising method for controlling the orientation of fibers in composites. In this work, we investigated the mechanisms of electric field-induced alignment and its influence on the orientation of DFs in a solution medium. Through modelling and experimental analysis, we demonstrate that the application of an electric field to a suspension of DFs results in the fibers alignment along the direction of the field. This alignment process occurs due to the interaction between the electric field and the dipole moments of the fibers. Furthermore, we explore the factors affecting the process of alignment, such as the strength of the applied electric field, the dielectric constants of fibers and solution, and the characteristics of the fibers. Overall, electric field-induced alignment offers a versatile and efficient method, enabling the development of advanced materials with tailored properties for various industrial applications.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 24534-24543"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518718","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 SiO2/B2O3 ratio on high-temperature behavior and crystallization of BaO-CaO-SiO2-Al2O3-B2O3 sealants for SOFCs SiO2/B2O3配比对SOFCs密封胶高温性能及结晶的影响

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.221

Andrey O. Zhigachev , Maria A. Alexeeva , Sergey I. Bredikhin , Ekaterina V. Tsipis , Irina I. Zverkova , Ekaterina A. Agarkova

{"title":"Effect of SiO2/B2O3 ratio on high-temperature behavior and crystallization of BaO-CaO-SiO2-Al2O3-B2O3 sealants for SOFCs","authors":"Andrey O. Zhigachev , Maria A. Alexeeva , Sergey I. Bredikhin , Ekaterina V. Tsipis , Irina I. Zverkova , Ekaterina A. Agarkova","doi":"10.1016/j.ceramint.2025.03.221","DOIUrl":"10.1016/j.ceramint.2025.03.221","url":null,"abstract":"<div><div>In order to study promising sealant compositions for SOFC systems and explore ways of adjusting their properties, the effect of SiO<sub>2</sub> and B<sub>2</sub>O<sub>3</sub> content on key properties of 0.17BaO-0.17CaO-0.05Al<sub>2</sub>O<sub>3</sub>-<em>x</em>B<sub>2</sub>O<sub>3</sub>-(0.61-<em>x</em>)SiO<sub>2</sub> sealants was investigated. It was found that, within the studied concentration range glass-transition temperature, softening point, and other key temperatures monotonously decreased with rising B<sub>2</sub>O<sub>3</sub> content. In particular, softening temperature changed on average by 11 °C per 1 mol% shift in SiO<sub>2</sub>-B<sub>2</sub>O<sub>3</sub> balance, making the studied compositions suitable for applications in SOFC systems with different sealing and operating temperatures. It was shown that all the studied compositions retained significant amount of amorphous phase after sealing heat treatment, giving them the ability to mitigate thermomechanical stresses. Major phases crystallizing in the studied compositions were Ca<sub>2</sub>BaSi<sub>3</sub>O<sub>9</sub> and hexacelsian BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub>; these phases are considered desirable for SOFC applications due to their low CTE mismatch. CTEs of all the sealants after thermal treatment were in 10.0–11.0 × 10<sup>−6</sup> K<sup>−1</sup> range, making them thermomechanically compatible with SOFC materials, both zirconia-based electrolytes and steel interconnects. Long-term stability and thermal cycling tests conducted on a selected sealant composition showed its stability for at least 1000 h in SOFC operating conditions and for 20 thermal cycles from room temperature to 850 °C.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 25371-25378"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518916","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