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

Fabrication of α-Si3N4/Si3N4w/SiCN ceramic substrate with embedded microchannel by DLP DLP法制备嵌入微通道α-Si3N4/Si3N4w/SiCN陶瓷衬底

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-03 DOI: 10.1016/j.jeurceramsoc.2025.118120

Zhongya Zhang , Yongzhao Hou , Juhai Weng , Cheng Zhong , Jing Xue , Jiawei Jiang , Guangwu Wen , Xuefei Ma , Lijuan Zhang

{"title":"Fabrication of α-Si3N4/Si3N4w/SiCN ceramic substrate with embedded microchannel by DLP","authors":"Zhongya Zhang , Yongzhao Hou , Juhai Weng , Cheng Zhong , Jing Xue , Jiawei Jiang , Guangwu Wen , Xuefei Ma , Lijuan Zhang","doi":"10.1016/j.jeurceramsoc.2025.118120","DOIUrl":"10.1016/j.jeurceramsoc.2025.118120","url":null,"abstract":"<div><div>In light of the mounting imperative for high heat dissipation packages for power devices, the DLP 3D printing technique was utilized as a preparatory measure for integrated embedded microfluidic SiCN ceramic substrates. The fabrication of SiCN composite ceramics with minimal shrinkage (25.6 ± 0.2 %) and elevated fracture toughness (4.1 ± 0.1 MPa·m<sup>1/2</sup>) was accomplished by optimizing the Si<sub>3</sub>N<sub>4</sub> whiskers filler content within the hybrid filler. The critical thermal shock temperature difference of α-Si<sub>3</sub>N<sub>4</sub>/Si<sub>3</sub>N<sub>4w</sub>/SiCN ceramics to reach 730 °C, which is 119 °C higher than α-Si<sub>3</sub>N<sub>4</sub>/SiCN ceramics without Si<sub>3</sub>N<sub>4</sub> whiskers (621 °C). Ceramics substrates with embedded microfluidic channels (diameter less than 467 μm) were prepared by optimizing fillers, and the connectivity, airtightness, and heat dissipation properties were tested and simulated separately. The results demonstrated excellent impermeability and heat dissipation properties. The study provides a viable technical solution to the issue of heat dissipation of electronic components under high-temperature working conditions.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118120"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940029","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

Carrier concentration control and thermoelectric enhancement of n-type Bi2Te3-based materials via atomic-layer-deposited In2O3 interfacial layers 基于原子层沉积In2O3界面层的n型bi2te3基材料载流子浓度控制和热电增强

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-01 DOI: 10.1016/j.jeurceramsoc.2025.118121

Gwang Min Park , Ji Ho Jeon , Jaebaek Ju , Jin-Sang Kim , Seung-Hyub Baek , Jeong Hwan Han , Seong Keun Kim

{"title":"Carrier concentration control and thermoelectric enhancement of n-type Bi2Te3-based materials via atomic-layer-deposited In2O3 interfacial layers","authors":"Gwang Min Park , Ji Ho Jeon , Jaebaek Ju , Jin-Sang Kim , Seung-Hyub Baek , Jeong Hwan Han , Seong Keun Kim","doi":"10.1016/j.jeurceramsoc.2025.118121","DOIUrl":"10.1016/j.jeurceramsoc.2025.118121","url":null,"abstract":"<div><div>This study reports a strategy to enhance the thermoelectric performance of Bi<sub>2</sub>Te<sub>2.7</sub>Se<sub>0.3</sub> (BTS) by introducing ultrathin In<sub>2</sub>O<sub>3</sub> interfacial layers via atomic layer deposition (ALD). Conformal In<sub>2</sub>O<sub>3</sub> coatings were preserved after spark plasma sintering, thereby suppressing grain growth. A small interfacial energy barrier (∼0.2 eV) was formed at the BTS/In<sub>2</sub>O<sub>3</sub> interface, enabling carrier filtering that preferentially transmits high-energy electrons, thereby enhancing mobility. At the same time, the coatings suppressed Te volatilization during sintering, leading to reduced carrier concentration and increased Seebeck coefficient. Although electrical conductivity decreased, the power factor remained nearly unchanged, while total thermal conductivity was markedly reduced due to a lower electronic contribution. As a result, the 20-cycle In<sub>2</sub>O<sub>3</sub>-coated BTS achieved a maximum <em>zT</em> of 1.02 at 373 K, surpassing the pristine sample. These results highlight ALD-engineered interfacial barriers as an effective approach for carrier concentration control and thermoelectric performance optimization in bulk Bi<sub>2</sub>Te<sub>3</sub>-based materials.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118121"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882192","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 B2O3 substitution for Al2O3 on crystallization behavior, microstructure, and mechanical properties of forsterite-based glass-ceramics B2O3取代Al2O3对锻造体基微晶玻璃结晶行为、微观结构和力学性能的影响

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2025-12-24 DOI: 10.1016/j.jeurceramsoc.2025.118115

Wei Liu , Yunlan Guo , Kaiwen Hu , Jian Ruan , Jong Heo , Chao Liu

{"title":"Effect of B2O3 substitution for Al2O3 on crystallization behavior, microstructure, and mechanical properties of forsterite-based glass-ceramics","authors":"Wei Liu , Yunlan Guo , Kaiwen Hu , Jian Ruan , Jong Heo , Chao Liu","doi":"10.1016/j.jeurceramsoc.2025.118115","DOIUrl":"10.1016/j.jeurceramsoc.2025.118115","url":null,"abstract":"<div><div>This study investigates the effects of B<sub>2</sub>O<sub>3</sub> substitution for Al<sub>2</sub>O<sub>3</sub> on the crystallization behavior, microstructure, and mechanical properties of glass-ceramics (GCs) in the Na<sub>2</sub>O-MgO-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> system. Results indicate that B<sub>2</sub>O<sub>3</sub> promotes the formation of [BO<sub>3</sub>] units, leading to a more open glass network and reduced elastic modulus and hardness in the as-prepared glasses. During heat-treatment, Mg<sub>2</sub>SiO<sub>4</sub> crystallizes, though its content decreases with higher B<sub>2</sub>O<sub>3</sub> levels, accompanied by increased crystal size and clustering. Spectroscopic and microscopic analyses (XRD, Raman, NMR, XPS, TEM) confirm that Ti<sup>3 +</sup> incorporates into the Mg2 site of Mg<sub>2</sub>SiO<sub>4</sub>, while B<sup>3+</sup> partially substitutes for Si<sup>4+</sup>. The fracture toughness of GCs initially decreases due to reduced crystallinity, but recovers at higher B<sub>2</sub>O<sub>3</sub> contents owing to combined effects of larger crystal size and enhanced [BO<sub>3</sub>] content. These findings provide insights into the role of B<sub>2</sub>O<sub>3</sub> in tailoring the mechanical performance of Mg<sub>2</sub>SiO<sub>4</sub>-based GCs through controlled structural and microstructural evolution.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118115"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842700","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 alumina content on the exsolution behavior and crystal structure of magnesia alumina spinel 氧化铝含量对镁铝尖晶石析出行为及晶体结构的影响

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-20 DOI: 10.1016/j.jeurceramsoc.2026.118160

Zhongzhuang Zhang , Youqi Li , Yaozheng Li , Zhongtao Luo , Guotian Ye , Yuandong Mu

{"title":"Effect of alumina content on the exsolution behavior and crystal structure of magnesia alumina spinel","authors":"Zhongzhuang Zhang , Youqi Li , Yaozheng Li , Zhongtao Luo , Guotian Ye , Yuandong Mu","doi":"10.1016/j.jeurceramsoc.2026.118160","DOIUrl":"10.1016/j.jeurceramsoc.2026.118160","url":null,"abstract":"<div><div>Despite extensive research on the properties and applications of magnesia alumina spinel (MgAl<sub>2</sub>O<sub>4</sub>), the exsolution behavior of spinels with different alumina contents under varying heat-treatment temperatures remains poorly understood. This study investigates the exsolution behavior and crystal structure changes of spinel with different alumina contents under various heat treatment temperatures. We found that onset temperature for exsolution decreases with increasing alumina content. Specifically, 78-spinel and 85-spinel begin to exsolve at 1300 °C, while 90-spinel starts at 1200 °C. At 1300 °C, the alumina content in spinel reaches a minimum, with 78-spinel having the lowest alumina content (76.7 %), followed by 85-spinel (78 %) and 90-spinel (80 %). Experimental exsolution equilibrium alumina contents were higher than theoretical values due to differences in chemical driving forces and ion migration behaviors. During exsolution, Al<sup>3 +</sup> ions occupying tetrahedral sites are preferentially expelled, leading to a measurable expansion of the spinel lattice.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 8","pages":"Article 118160"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036560","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

Giant improvement of magnetostrictive properties in polycrystalline CoFe2O4 ceramics via Cu doping and magnetic aligning during solid-state preparation process 固态制备过程中Cu掺杂和磁对准对CoFe2O4多晶陶瓷磁致伸缩性能的显著改善

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2025-12-22 DOI: 10.1016/j.jeurceramsoc.2025.118108

Jiheng Li, Miao Liu, Jiawang Cheng, Xiaoqian Bao, Xuexu Gao

{"title":"Giant improvement of magnetostrictive properties in polycrystalline CoFe2O4 ceramics via Cu doping and magnetic aligning during solid-state preparation process","authors":"Jiheng Li, Miao Liu, Jiawang Cheng, Xiaoqian Bao, Xuexu Gao","doi":"10.1016/j.jeurceramsoc.2025.118108","DOIUrl":"10.1016/j.jeurceramsoc.2025.118108","url":null,"abstract":"<div><div>As for cobalt ferrites, a type of magnetic ceramic, achieving a balance between high magnetostriction and low driving magnetic fields continues to be a significant challenge. In this work, a series of Cu substituted cobalt ferrites were synthesized using the compression molding and magnetic field assisted injection molding respectively. All prepared cobalt ferrites exhibited a single-phase spinel structure. The Cu-doped cobalt ferrites showed a significant increase in grain size. The substitution slightly decreased the saturation magnetization. The significant decrease of coercivity indicated the improved soft magnetic properties of the Cu-doped cobalt ferrites. The < 001 > orientation was achieved by magnetic aligning during injecting molding process in all Cu-doped samples. The maximum magnetostriction of −460 ppm was obtained. The strain sensitivity improved to 0.477 ppm/Oe, marking a 363 % increase. The corresponded magnetic field decreased to 778 Oe. The notable increase in magnetostriction and strain sensitivity resulted from the combined effects of Cu doping and < 100 > orientation.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118108"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839129","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

Al2O3-tuned glass-phase evolution enabling dual-mode heat conduction in hexagonal boron nitride ceramics 六方氮化硼陶瓷中al2o3调谐玻璃相演化实现双模热传导

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2025-12-23 DOI: 10.1016/j.jeurceramsoc.2025.118112

Yanli Ye , Zijun He , Xiaoqing Liu , Ningning Li , Yuxuan Wang , Zheng Qi , Junlin Xie

{"title":"Al2O3-tuned glass-phase evolution enabling dual-mode heat conduction in hexagonal boron nitride ceramics","authors":"Yanli Ye , Zijun He , Xiaoqing Liu , Ningning Li , Yuxuan Wang , Zheng Qi , Junlin Xie","doi":"10.1016/j.jeurceramsoc.2025.118112","DOIUrl":"10.1016/j.jeurceramsoc.2025.118112","url":null,"abstract":"<div><div>Hexagonal boron nitride (h-BN) is a promising structural ceramic for high-temperature applications but suffers from poor sintering and low strength. In this study, h-BN ceramics were reinforced using Y<sub>2</sub>O<sub>3</sub>-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> (YAS) oxides additives to regulate glass-phase evolution and optimize thermophysical properties. Varying the Al<sub>2</sub>O<sub>3</sub> content transformed the additive phase from crystalline Y<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> to amorphous Y-Si-Al-O glass, promoting liquid-phase sintering, improving platelet alignment, and enhancing densification. The optimized composition (YSA10) achieved the highest relative density (88.28 %) and superior thermal conductivity (155 W·m⁻¹·K⁻¹ at room temperature; 66 W·m⁻¹·K⁻¹ at 1000 °C). The reduced conductivity decay above 600 °C suggests the emergence of photon-mediated transport through the semi-transparent glass phase, supplementing phonon conduction at elevated temperatures. These findings reveal a novel dual-mode heat conduction mechanism in oxide-modified h-BN ceramics and establish a new paradigm for designing high-temperature ceramics with integrated phonon-photon heat transport through controlled glass-phase engineering.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118112"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940028","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

Significantly enhanced dielectric and nonlinear electrical properties in CCTO ceramics prepared via high–energy ball milling with fine–grained IBLC microstructure 采用高能球磨法制备具有细晶IBLC微结构的CCTO陶瓷，显著提高了陶瓷的介电性能和非线性电学性能

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-05 DOI: 10.1016/j.jeurceramsoc.2026.118126

Kwanruthai Sankham , Jurimart Wongsricha , Sirion Srilarueang , Jutapol Jumpatam , Nutthakritta Phromviyo , Pornjuk Srepusharawoot , Prasit Thongbai

{"title":"Significantly enhanced dielectric and nonlinear electrical properties in CCTO ceramics prepared via high–energy ball milling with fine–grained IBLC microstructure","authors":"Kwanruthai Sankham , Jurimart Wongsricha , Sirion Srilarueang , Jutapol Jumpatam , Nutthakritta Phromviyo , Pornjuk Srepusharawoot , Prasit Thongbai","doi":"10.1016/j.jeurceramsoc.2026.118126","DOIUrl":"10.1016/j.jeurceramsoc.2026.118126","url":null,"abstract":"<div><div>CaCu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> ceramics were synthesized using high–energy ball milling (HEBM) and conventional ball milling (CBM) methods. The HEBM powder produced fine, high–quality powder with improved reactivity, facilitating the formation of dense and uniform ceramic microstructures with fine grains ranging from ∼1.1–1.7 μm. Optimally sintered HEBM ceramics exhibited high ε′ of ∼3000–4000 and exceptionally low tanδ∼0.026–0.009 at 1 kHz. The ε′ of HEBM ceramics remained stable across a broad frequency range (100 Hz to 1 MHz) and demonstrated excellent temperature stability from −55 to 150 °C, fulfilling the X8R capacitor standard, while CBM ceramics exhibited strong temperature–dependent ε′. Additionally, HEBM ceramics displayed significantly improved nonlinear current–voltage behavior, with a high nonlinear coefficient of 24.1 and a breakdown strength over ten times higher than that of CBM ceramics. Impedance and X–ray photoelectron analyses confirmed enhanced dielectric and nonlinear properties resulted mainly from improved grain boundaries.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118126"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940030","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

Composite scaffolds based on mesoporous bioactive glasses and Sr,Mg-doped calcium phosphates as cell carriers for bone tissue engineering 介孔生物活性玻璃与掺锶、镁磷酸钙作为骨组织工程细胞载体的复合支架

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-07 DOI: 10.1016/j.jeurceramsoc.2026.118129

Tamara Matic , Farah Daou , Jelena Petrovic , Biljana Ristić , Andrea Cochis , Lia Rimondini , Djordje Veljovic

{"title":"Composite scaffolds based on mesoporous bioactive glasses and Sr,Mg-doped calcium phosphates as cell carriers for bone tissue engineering","authors":"Tamara Matic , Farah Daou , Jelena Petrovic , Biljana Ristić , Andrea Cochis , Lia Rimondini , Djordje Veljovic","doi":"10.1016/j.jeurceramsoc.2026.118129","DOIUrl":"10.1016/j.jeurceramsoc.2026.118129","url":null,"abstract":"<div><div>Scaffolds in bone tissue engineering (BTE) function as temporary 3D support for cells, recreating a bone-like microenvironment that promotes their adhesion, proliferation, and differentiation. Calcium phosphate (CaP) ceramics are widely used in orthopedics owing to their similarity to biological apatite, while ion doping and bioactive glass addition further enhance biological activity and mechanical stability. Here, composite scaffolds were fabricated from Sr,Mg-doped CaP combined with pristine or Sr,Mg-doped mesoporous bioactive glass nanoparticles (MBGNs). MBGNs incorporation promoted <em>α</em>-tricalcium phosphate phase formation and significantly improved the compressive strength via reduced microporosity through liquid-phase sintering without compromising the macroporosity. Bioactivity was confirmed under dynamic perfusion. Obtained scaffolds supported attachment and growth of human bone marrow stromal cells and endothelial cells, with enhanced pro-angiogenic properties. These results highlight Sr,Mg-doped CaP/MBGN composites as a mechanically reinforced, osteogenic and pro-angiogenic platform for BTE.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118129"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940032","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

Thermoelectric Performance Optimization of Bi0.5Sb1.5Te3 via Silicon Incorporation and Interface Engineering 基于硅掺入和界面工程的Bi0.5Sb1.5Te3热电性能优化

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-12 DOI: 10.1016/j.jeurceramsoc.2026.118141

Reyhan Başar Boz , Cem Sevik , Servet Turan

{"title":"Thermoelectric Performance Optimization of Bi0.5Sb1.5Te3 via Silicon Incorporation and Interface Engineering","authors":"Reyhan Başar Boz , Cem Sevik , Servet Turan","doi":"10.1016/j.jeurceramsoc.2026.118141","DOIUrl":"10.1016/j.jeurceramsoc.2026.118141","url":null,"abstract":"<div><div>Optimization of thermoelectric performance involves overcoming two interrelated problems: maximizing the power factor and decreasing thermal conductivity. This study systematically investigates the effect of silicon (Si) addition on the thermoelectric performance of p-type Bi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3</sub> (BST), with an emphasis on its electronic transport properties, microstructure, and phonon scattering behavior. For this aim, a series of composites with varying Si content (x = 0, 0.35, 0.45, 0.55, 0.65 wt%) were synthesized via a melting-solidification process followed by spark plasma sintering (SPS) at 500°C under 48 MPa for an 8 min dwell time. The optimal composite (x = 0.55) exhibited a Seebeck coefficient of 224 ± 15 μV/K and a power factor of 3.80 ± 0.55 mW/mK² at 50°C. This improvement is attributed to energy filtering at interfaces that enhanced the average carrier energy while maintaining high weighted mobility (407 ± 35 cm²/V·s). Simultaneously, Si-induced lattice strain and interfacial phonon scattering had the effect of slightly decreasing κ<sub>l</sub> + κ<sub>b</sub> by approximately 9 %. These synergistic effects yielded a maximum ZT of 1.56 ± 0.23 at 50°C—a 14 % enhancement over pristine BST—and an average ZT (ZTₐᵥₑ) of 1.33 ± 0.20 between 50 and 200°C, corresponding to a conversion efficiency of 7.6 ± 1.14 %.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118141"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978556","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 multi-scale fatigue life prediction method for plain-woven SiC/SiC composites based on cumulative hysteretic dissipated energy 基于累积迟滞耗散能的平织SiC/SiC复合材料多尺度疲劳寿命预测方法

IF 6.2 2区材料科学

Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-07 DOI: 10.1016/j.jeurceramsoc.2026.118130

Ruixiang Chen , Chao You , Zikai Zhou , Weilong Wu , Chenyu Yang , Jie Sun , Fang Wang , Xiguang Gao , Yingdong Song

{"title":"A multi-scale fatigue life prediction method for plain-woven SiC/SiC composites based on cumulative hysteretic dissipated energy","authors":"Ruixiang Chen , Chao You , Zikai Zhou , Weilong Wu , Chenyu Yang , Jie Sun , Fang Wang , Xiguang Gao , Yingdong Song","doi":"10.1016/j.jeurceramsoc.2026.118130","DOIUrl":"10.1016/j.jeurceramsoc.2026.118130","url":null,"abstract":"<div><div>In this paper, a fatigue life prediction method applied for plain-woven SiC/SiC composites was developed, based on multi-scale modeling. Firstly, unidirectional tension-tension fatigue tests were carried out using mini-composites and plain-woven composites at ambient temperature and 1100 ℃. The failure modes of plain-woven CMCs were comprehensively characterized, highlighting the detrimental effects of stitching yarns in reducing the fatigue properties despite its advantages in resisting delamination. The evolution of the hysteretic dissipated energy and residual stiffness of mini-composites during fatigue loading was extracted from experimental data. They were used to describe the fatigue properties of yarns in a high-fidelity multi-scale model representing plain-woven composites, where characteristics of yarns, matrix and pores were modeled based on the mesoscale structural information obtained from scanning using the X-ray computed tomography (XCT) technology. This model was then used to successfully predict the fatigue life of plain-woven composites at the ambient temperature and 1100 ℃, accounting for the effects of stress redistribution resulting from stiffness degradation of yarns during fatigue loading. This model was further used to demonstrate that the interwoven area between warp and weft yarns was prone to debonding during fatigue loading, showing good agreement with experimental results. The effects of fatigue loads on the accumulation of mesoscale and macroscale damage within the plain-woven composites were also investigated using this model.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118130"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978555","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