Xingyu Qi , Yuelong Ma , Yimo Zhao , Tao Pang , Shisheng Lin , Lili Lu , Guoxing Jiang , Dongbin Xue , Guilu Wang , Daqin Chen
{"title":"Novel color converters for full-spectrum high-power LED/LD: Patterned phosphor in glass film – ceramic composite","authors":"Xingyu Qi , Yuelong Ma , Yimo Zhao , Tao Pang , Shisheng Lin , Lili Lu , Guoxing Jiang , Dongbin Xue , Guilu Wang , Daqin Chen","doi":"10.1016/j.jeurceramsoc.2026.118221","DOIUrl":"10.1016/j.jeurceramsoc.2026.118221","url":null,"abstract":"<div><div>Addressing thermal management and color quality challenges in solid-state lighting, this work pioneers a color-converter based on patterned phosphor-in-glass film (PiGF) sintered on a YAG:Ce transparent ceramic (TC). The composite alternating β-SiAlON:Eu and (Sr,Ca)AlSiN<sub>3</sub>:Eu PiGF striped on YAG:Ce TC exhibited exceptional photothermal performance: thermal conductivity reached 8.32 W/(m·K) and only 11.6 % luminescence intensity loss at 150 °C. Under a 450 nm LD excitation with the laser spot size of 850 μm, beam expansion ratios were 24 % for the YAG:0.35 at%Ce, and 84.11 % for the green-red PiGF (2:1 ratio). Combined with a 60 W blue LED chip, the color-converter realized a nature-white-light emission with LF of 3705 lm, CCT of 3852 K, and CRI of 91, respectively. By combining the converter with a 12 W blue LD, the obtained LE, CRI and CCT were 163 lm/W, 90.1 and 5092 K, respectively. The composite shows great promise as a novel color-converter for high-power LED/LD lighting applications.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 9","pages":"Article 118221"},"PeriodicalIF":6.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191579","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}
Yingze Li , Yao Yao , Rui Zhang , Mengdi Zhang , Jing Wang , Lei Zhao
{"title":"Phase structure, ferroelectric and piezoelectric properties in (Ag,Li)NbO3 ceramics","authors":"Yingze Li , Yao Yao , Rui Zhang , Mengdi Zhang , Jing Wang , Lei Zhao","doi":"10.1016/j.jeurceramsoc.2026.118175","DOIUrl":"10.1016/j.jeurceramsoc.2026.118175","url":null,"abstract":"<div><div>Li-doping has been demonstrated to be effective in enhancing ferroelectric and piezoelectric properties of AgNbO<sub>3</sub>-based ceramics via promoting antiferroelectric/ferrielectric (AFE/FIE) to ferroelectric (FE) phase transition. In this work, the phase structure, FE properties and piezoelectric properties of (Ag<sub>1-<em>x</em></sub>Li<sub><em>x</em></sub>)NbO<sub>3</sub> ceramics with <em>x</em> = 0.02–0.07 are investigated. (Ag<sub>1-<em>x</em></sub>Li<sub><em>x</em></sub>)NbO<sub>3</sub> ceramics undergo a phase transition from FIE to FE phase as <em>x</em> increases from 0.02 to 0.07 with FIE phase at <em>x</em> = 0.02–0.04, a coexistence of AFE and FE phases at <em>x</em> = 0.05, and FE phase at <em>x</em> = 0.06–0.07 at room temperature. The piezoelectric coefficient (<em>d</em><sub>33</sub>) is 74 pC/N in (Ag<sub>0.94</sub>Li<sub>0.06</sub>)NbO<sub>3</sub> ceramic, and increases to 92 pC/N at FE-AFE phase boundary. The relationship between <em>d</em><sub>33</sub> and phase structure is elucidated via temperature-dependent <em>d</em><sub>33</sub> and dielectric measurements. This work provides further insights into the tunable phase structures of AgNbO<sub>3</sub>-based ceramics and their potential applications in next-generation multi-sensing devices.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 9","pages":"Article 118175"},"PeriodicalIF":6.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191580","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}
Wei Wang , Lei Zhao , Yewei Wu , Liangliang Liu , Songlin Ran , Xing Jin , Gang Wang
{"title":"Microstructure and shear strength of B4C-TiB2 ceramics joined by spark plasma sintering with a Ti/Ni/Ti interlayer","authors":"Wei Wang , Lei Zhao , Yewei Wu , Liangliang Liu , Songlin Ran , Xing Jin , Gang Wang","doi":"10.1016/j.jeurceramsoc.2026.118232","DOIUrl":"10.1016/j.jeurceramsoc.2026.118232","url":null,"abstract":"<div><div>Reliable bonding of B<sub>4</sub>C-TiB<sub>2</sub> ceramics was realized through a Ti/Ni/Ti composite interlayer and spark plasma sintering (SPS) processing. The formation of joint prepared at 1050 °C with holding times from 1 to 15 min were studied. The mechanical test showed that the room temperature shear strength for 1 min reached 108 ± 16 MPa, and the strength decreased significantly after holding for more than 5 min. The enhanced joint performance under short holding time originated from the effects of dispersion strengthening by TiB<sub>2</sub> nanoparticles and interface strengthening through interlocking structure between TiB<sub>2</sub> and Ni<sub>3</sub>Ti phase. Also, the coordinated NiTi / Ni<sub>3</sub>Ti layered configuration established a stress gradient transition zone that mitigated interfacial thermal mismatch stresses. However, over-elongated holding induced thickening of reaction layers, disrupting functional gradient integrity and consequently diminished mechanical strength.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 9","pages":"Article 118232"},"PeriodicalIF":6.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191589","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}
Bola Yoon , Benjamin Groth , Marco C. Martinez , Trevor G. Aguirre , Amy M. Elliott , Corson L. Cramer
{"title":"Influence of silicon infiltration conditions on microstructure and mechanical properties in binder jet 3D printed SiC","authors":"Bola Yoon , Benjamin Groth , Marco C. Martinez , Trevor G. Aguirre , Amy M. Elliott , Corson L. Cramer","doi":"10.1016/j.jeurceramsoc.2026.118228","DOIUrl":"10.1016/j.jeurceramsoc.2026.118228","url":null,"abstract":"<div><div>Atmosphere, temperature, and hold time were varied for silicon infiltrated binder jet 3D printed SiC preforms. A two-step infiltration process optimized infiltration. The first step at 1450 °C under vacuum facilitated improved wetting. The second step at elevated temperature in argon advanced infiltration while suppressing vaporization. Variation of the second-step temperature (1550–1750 °C) and hold time revealed that 1550 °C for 1 h in argon following initial vacuum treatment yielded the highest silicon uptake ratio (∼96 %) with minimal residual porosity and strengths of 150–180 MPa. Flexural strength was either stable or improved with elevated temperatures up to 1000°C. In contrast, higher temperatures or extended hold times led to increased silicon vaporization and pores. The optimized process was applied to formulations with extra carbon to enhance SiC content and interconnectedness through reaction bonding, which corresponded to increased flexural strength. These findings provide guidance for silicon infiltration in additively manufactured SiC.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 9","pages":"Article 118228"},"PeriodicalIF":6.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191592","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}
Longjiao Pu, Guangda Guo, Zeshui Xu, Fang Ye, Laifei Cheng
{"title":"Enhanced water-oxygen corrosion resistance of SiCf/SiC composites modified by novel rare-earth disilicate (4RE0.25)2Si2O7","authors":"Longjiao Pu, Guangda Guo, Zeshui Xu, Fang Ye, Laifei Cheng","doi":"10.1016/j.jeurceramsoc.2026.118233","DOIUrl":"10.1016/j.jeurceramsoc.2026.118233","url":null,"abstract":"<div><div>Severe performance degradation of SiC<sub>f</sub>/SiC composites in high-temperature water-oxygen environments of aircraft engines critically limits their engineering applications. This study addresses the challenge by synthesizing a four-component rare-earth disilicate solid solution (4RE<sub>0.25</sub>)<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> (RE = Yb, Y, Lu, Tm) via solid-state reaction and fabricating SiC<sub>f</sub>/SiC-(4RE<sub>0.25</sub>)<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> composites with multilayered matrix structure using combined chemical vapor infiltration (CVI), slurry impregnation (SI), and polymer infiltration and pyrolysis (PIP) processes. The results demonstrate that (4RE<sub>0.25</sub>)<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> exhibits a β-phase monoclinic structure with homogeneous rare-earth distribution at the microscale, exhibiting exceptional thermal stability and a thermal expansion coefficient matching that of the SiC matrix. During static water-oxygen corrosion at 1400 °C, the (4RE<sub>0.25</sub>)<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> phase develops a continuous barrier layer through grain growth and interconnection, effectively suppressing the diffusion of corrosive species. After 50 h of corrosion, the composites retain 88.82 % of their initial flexural strength, representing a 20 % improvement compared to the unmodified composites.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 9","pages":"Article 118233"},"PeriodicalIF":6.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191584","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}
Linhao Li , Yupeng Hao , Zhilun Lu , Ge Wang , Zhiling Hou
{"title":"Preservation of dopant induced high ionic conductivity in cold sintered Bi2O3 ceramic family","authors":"Linhao Li , Yupeng Hao , Zhilun Lu , Ge Wang , Zhiling Hou","doi":"10.1016/j.jeurceramsoc.2026.118214","DOIUrl":"10.1016/j.jeurceramsoc.2026.118214","url":null,"abstract":"<div><div>Bi<sub>2</sub>O<sub>3</sub>-based ceramics are promising functional materials for electrochemical devices. However, conventional high-temperature sintering (HTS) is energy intensive and can cause interfacial reactions or mechanical failure. In this work, pure Bi<sub>2</sub>O<sub>3</sub> and Er-, Nb-, and Ba-doped compositions were fabricated via the cold sintering process (CSP) at 250 °C. All samples achieved relative densities above 90 %, with pure and Ba-doped ceramics approaching unity. Most compositions remained single-phase after CSP, whereas the Ba-doped ceramic showed slight phase segregation. Analysis of the FTIR and TG–DSC results revealed the CSP mechanism, in which bismuth acetate and oxyacetate form and assist the densification process. CSP ceramics exhibited high oxide ion or electronic conduction that was comparable to their HTS counterparts. The results confirm the feasibility of applying CSP to Bi<sub>2</sub>O<sub>3</sub>-based ceramics, paving the way for the fabrication of advanced composite materials and complex devices.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 9","pages":"Article 118214"},"PeriodicalIF":6.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191690","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}
Yueying Yin , Zemin Liu , Diansen Li , Lei Jiang , Stepan V. Lomov , Frederik Desplentere
{"title":"Effect of temperature on bending mechanical behavior of 3D angle-interlock woven Al₂O₃/mullite ceramic matrix composites","authors":"Yueying Yin , Zemin Liu , Diansen Li , Lei Jiang , Stepan V. Lomov , Frederik Desplentere","doi":"10.1016/j.jeurceramsoc.2026.118203","DOIUrl":"10.1016/j.jeurceramsoc.2026.118203","url":null,"abstract":"<div><div>This study systematically investigates the evolution of bending properties and damage mechanisms of three-dimensional angle-interlock woven alumina/mullite ceramic matrix composites (3DAW Al₂O₃-CMCs) under room-temperature (RT) and various high-temperature environments. The experimental temperature range was set from RT to 1200°C. The results indicate that the bending properties of 3DAW Al₂O₃-CMCs exhibit a non-monotonic temperature dependence, initially increasing before decreasing, with optimal performance observed at 1000°C where the maximum bending strength and bending modulus reach 128 MPa and 15.20 GPa, respectively. The damage mechanism shifts with increasing temperature: from localized fiber fracture and matrix cracking, to ductile fracture characterized by matrix softening and enhanced interfacial bonding, and finally to the state of matrix degradation coupled with fiber bundles collapse.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 9","pages":"Article 118203"},"PeriodicalIF":6.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146098817","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":"Temperature stable (1-y)Zn1-xGaxZrTa2O8+x/2-yZnTa2O6 microwave dielectric ceramics with ultra-low loss","authors":"Lan Gao, Yun Zhang, Xi Jiang, Shihua Ding","doi":"10.1016/j.jeurceramsoc.2026.118223","DOIUrl":"10.1016/j.jeurceramsoc.2026.118223","url":null,"abstract":"<div><div>Ga<sup>3+</sup> heterovalent substitution for Zn<sup>2+</sup> was beneficial for modifying ZnZrTa<sub>2</sub>O<sub>8</sub> ceramic. The enlarged <em>Q</em>×<em>f</em> was caused by a combination of grain size and total lattice energy <em>U</em><sub>Total</sub> increase. The improvement of <em>τ</em><sub><em>f</em></sub> was attributed to the increase in Ta-O bond energy. Zn<sub>0.99</sub>Ga<sub>0.01</sub>ZrTa<sub>2</sub>O<sub>8.005</sub> ceramics exhibited optimal <em>Q</em>×<em>f</em> of 103,236 ± 2155 GHz (@7.38 GHz) and <em>τ</em><sub><em>f</em></sub> = -17.65 ± 1.61 ppm/℃. The improved <em>τ</em><sub><em>f</em></sub> provided great convenience for gaining temperature stable dielectric ceramics. Afterward, ZnTa<sub>2</sub>O<sub>6</sub> as a temperature compensator was added to adjust the <em>τ</em><sub><em>f</em></sub> to zero. The Zn<sub>0.99</sub>Ga<sub>0.01</sub>ZrTa<sub>2</sub>O<sub>8.005</sub> dissolved into ZnTa<sub>2</sub>O<sub>6</sub> lattice. As a result, 0.4Zn<sub>0.99</sub>Ga<sub>0.01</sub>ZrTa<sub>2</sub>O<sub>8.005</sub>-0.6ZnTa<sub>2</sub>O<sub>6</sub> ceramic sintered at 1350 ℃ obtained the desirable dielectric properties: <em>ε</em><sub><em>r</em></sub> = 28.18 ± 0.01, <em>Q</em>×<em>f</em> = 81,919 ± 394 GHz (@6.70 GHz), <em>τ</em><sub>ƒ</sub> = -0.51 ± 0.06 ppm/℃.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 9","pages":"Article 118223"},"PeriodicalIF":6.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191587","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}
Shengwu Huang , Haidong Wu , Jinbiao Ye , Li He , Xin Deng , Shanghua Wu
{"title":"Gel-casting of high-performance alumina-toughened zirconia with complex geometries using binder-jetted molds","authors":"Shengwu Huang , Haidong Wu , Jinbiao Ye , Li He , Xin Deng , Shanghua Wu","doi":"10.1016/j.jeurceramsoc.2026.118219","DOIUrl":"10.1016/j.jeurceramsoc.2026.118219","url":null,"abstract":"<div><div>A synergistic approach combining powder coating and thermal curing with binder jetting (BJ) was developed to fabricate high-performance alumina-toughened zirconia (ATZ) ceramics with complex geometries. The coated powders were systematically characterized, and the effect of ball milling duration on their post-sintering microstructure and mechanical properties was evaluated. The results indicated that the ZrO<sub>2</sub> powders were successfully coated with Al<sub>2</sub>O<sub>3</sub>, and milling for 18 h achieved the optimal densification and mechanical properties. Specifically, ATZ samples subjected to cold isostatic pressing (CIP) exhibited a relative density of 99.60 %, flexural strength of 1260 ± 61 MPa, hardness of 14.73 ± 0.35 GPa, and fracture toughness of 6.35 ± 0.15 MPa·m<sup>1/2</sup>, outperforming CIP ZrO<sub>2</sub> ceramics. Furthermore, ATZ suspensions were fabricated and successfully solidified through thermal curing. After sintering, the thermally cured ATZ ceramics demonstrated a relative density of 98.05 % and a flexural strength of 946 ± 83 MPa.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 9","pages":"Article 118219"},"PeriodicalIF":6.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191691","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}
Guandong Liang , Jianqiang Bi , Chengjiao Che , Haoyu Fang , Dong Wang , Weiqiang Li
{"title":"In-situ fabrication of high-temperature microwave absorbing TiCxN1-x nanosheets/porous Si3N4 composites from a MXene template","authors":"Guandong Liang , Jianqiang Bi , Chengjiao Che , Haoyu Fang , Dong Wang , Weiqiang Li","doi":"10.1016/j.jeurceramsoc.2026.118220","DOIUrl":"10.1016/j.jeurceramsoc.2026.118220","url":null,"abstract":"<div><div>This study reports a novel method to synthesize porous TiC nanosheets from Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene templates for fabricating high-performance microwave-absorbing composites. When TiC nanosheets were mixed with paraffin, the composite exhibited electromagnetic wave absorption performance comparable to that of MXene at a low loading of only 35 wt%, achieving an effective absorption bandwidth (EAB) of 3.6 GHz. The nanosheets were integrated into a porous Si<sub>3</sub>N<sub>4</sub> matrix via gel-casting and in-situ nitridation, forming TiC<sub>x</sub>N<sub>1-x</sub>/Si<sub>3</sub>N<sub>4</sub>. At 25 wt% loading, the composite possessed a flexural strength of 87.53 MPa and a density of 1.70 g/cm<sup>3</sup>. It achieved a minimum reflection loss of −27.25 dB and an EAB of 1.98 GHz. Remarkably, the composite retained an EAB of 1.73 GHz at 800 °C, a stability attributed to a protective TiO<sub>2</sub> layer forming on the nanosheet surfaces. This template-derived synthesis offers a viable route to lightweight, mechanically robust, and thermally stable microwave absorbers.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 9","pages":"Article 118220"},"PeriodicalIF":6.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191578","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}