Ceramics International最新文献_第2页

Cold sintering of strontium-adsorbed titanate adsorbents for stabilization and immobilization of secondary solid nuclear waste 冷烧结吸附锶的钛酸盐吸附剂对二次固体核废料的稳定和固定化

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-04-01 DOI: 10.1016/j.ceramint.2025.01.156

Chi Zhang , Pengju Chen , Yi Zhou , Yue Ji , Shunyan Ning , Lifeng Chen , Yupeng Xie , Hao Wu , Yan Wu , Yuezhou Wei , Weiqun Shi , Xiangbiao Yin

{"title":"Cold sintering of strontium-adsorbed titanate adsorbents for stabilization and immobilization of secondary solid nuclear waste","authors":"Chi Zhang , Pengju Chen , Yi Zhou , Yue Ji , Shunyan Ning , Lifeng Chen , Yupeng Xie , Hao Wu , Yan Wu , Yuezhou Wei , Weiqun Shi , Xiangbiao Yin","doi":"10.1016/j.ceramint.2025.01.156","DOIUrl":"10.1016/j.ceramint.2025.01.156","url":null,"abstract":"<div><div>The efficient immobilization of strontium-adsorbed titanates, a secondary radioactive waste from the Fukushima nuclear accident, is critical for post-accident remediation. This study presents cold sintering as a novel, one-step technique for stabilizing and immobilizing titanates for long-term disposal. In this study, sodium nonatitanate (SNT) powder was synthesized using a hydrothermal method, and the effects of transient liquid solutions, sintering temperature, uniaxial pressure, holding time on the densification of cold-sintered sodium nonatitanate (CS-SNT) were systematically investigated. The results indicate that interlayer water in sodium nonatitanate can serves as the transient solution. With optimal cold sintering conditions at 200 °C, 500 MPa, and 1 h, the relative density of Sr-SNT after cold sintering reaches 96.4 %. The sintered solidified matrix exhibited impressive mechanical properties, with a microhardness of 2.077 GPa and a compressive strength of 627 MPa. The leaching rate of the sintered solidified matrix after 14 days leaching experiments at 90 °C in deionized water was 7.1×10−7 g cm−2 d−1, showing that the solidified matrix had excellent chemical stability. The experimental results suggest that cold sintering might offers an effective, efficient, and environmentally sustainable method for Sr-SNT stabilization and solidification. This approach has the potential to advance practical technologies for managing and disposing of secondary waste from nuclear accidents.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 13100-13110"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815097","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-performance triboelectric nanogenerator based on high-permittivity BaZr0.2Ti0.8O3 nanowires with enhanced surface potential 基于具有增强表面电位的高介电常数BaZr0.2Ti0.8O3纳米线的高性能摩擦电纳米发电机

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-04-01 DOI: 10.1016/j.ceramint.2024.12.538

Huimin Li , Yan Zhang , Mingyang Yan , Yuan Liu , Miao Jia , Shan Xiang , Hanyu Gong , Qianqian Xu , Xi Yuan , Kechao Zhou , Dou Zhang

{"title":"High-performance triboelectric nanogenerator based on high-permittivity BaZr0.2Ti0.8O3 nanowires with enhanced surface potential","authors":"Huimin Li , Yan Zhang , Mingyang Yan , Yuan Liu , Miao Jia , Shan Xiang , Hanyu Gong , Qianqian Xu , Xi Yuan , Kechao Zhou , Dou Zhang","doi":"10.1016/j.ceramint.2024.12.538","DOIUrl":"10.1016/j.ceramint.2024.12.538","url":null,"abstract":"<div><div>Triboelectric nanogenerators (TENGs) provide a feasible solution to energy problems. Although great progress has been made in the development of high-performance TENGs in recent years, they still exhibit insufficient performance as power systems with high power consumption. Here, we propose a surface potential regulation-based strategy to construct high-performance TENGs using optimized electronegative poly (vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) with a high β-phase (86.99 %) and ultrahigh electropositive nylon 6 with high surface roughness and specific surface area as friction materials. The introduction of barium zirconate titanate (BaZr0.2Ti0.8O3) nanowires with high dielectric constant and high aspect ratio into PVDF-TrFE significantly promotes the formation of polar β-phase and increases the dielectric constant and surface potential of the negative material. This effective strategy achieves a significant increase in the output voltage and current of TENG, which is respectively about 146 % and 154 % of the original. The TENG containing 4 wt% BZT nanowires can generate an open circuit voltage of 243.2 V, a short circuit current of 41.9 μA, and an excellent power density of 7.5 W/m2, which exceeds the previously reported PVDF-based TENG. In addition, the high-performance TENG is able to charge a 22 μF capacitor to 4.1 V within 2 min at a low frequency (2.5 Hz) and power a calculator, demonstrating its great potential in efficient energy supply.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 9","pages":"Pages 11211-11219"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815139","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

Optimization for furnace-assisted laser cladding process parameter of crack-free ceramic-based coating by response surface methodology 响应面法优化无裂纹陶瓷基涂层炉助激光熔覆工艺参数

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-04-01 DOI: 10.1016/j.ceramint.2025.01.027

Zhao Yong , Yunfei Wang , Gaolin Yang , Yuelin Shi , QunLi Zhang , Jianhua Yao

{"title":"Optimization for furnace-assisted laser cladding process parameter of crack-free ceramic-based coating by response surface methodology","authors":"Zhao Yong , Yunfei Wang , Gaolin Yang , Yuelin Shi , QunLi Zhang , Jianhua Yao","doi":"10.1016/j.ceramint.2025.01.027","DOIUrl":"10.1016/j.ceramint.2025.01.027","url":null,"abstract":"<div><div>Ceramic-based coating, recognized as advanced surface treatment material, which is widely utilized across various sectors including aerospace, automotive, and industrial manufacturing. This extensive application is attributed to their remarkable properties such as wear resistance, high-temperature tolerance, and corrosion resistance. However, ceramic phase of the coating experienced excessive residual stress due to rapid cooling and heating effects, during the laser cladding process. Thus, the formation of cracks and pores in the coating is a common issue, posing significant challenge to the preparation of ceramic-based coating. This study employed the response surface methodology to optimize the process parameters of furnace-assisted laser cladding for fabricating 60WC coating on 45# steel substrate. The effects of laser power, scanning rate, powder feeding rate, and preheating temperature on coating height, dilution rate and micro-hardness were investigated comprehensively in order to achieve a crack-free 60WC coating. The results indicate that the synergistic effect of laser scanning speed and preheating temperature is of the utmost significance for attaining crack-free coatings with high hardness. Through the adjustment of these two parameters, a coating featuring high hardness and no cracks can be acquired. And it was determined by RSM that the optimal coating quality was achieved under the following conditions: 2586.13 W laser power, 740.74 mm/min laser scanning speed, 400 °C preheating temperature, and 22.0 g/min powder feeding speed, with no discernible macroscopic or microscopic cracks present.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 9","pages":"Pages 11735-11746"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815269","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

Water-assisted chemical sintering of vanadium dioxide powder and its use for eicosane detection 二氧化钒粉末的水助化学烧结及其在二十烷检测中的应用

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-04-01 DOI: 10.1016/j.ceramint.2025.01.183

Carlos Alberto Ibarra-Becerra , Benjamín Portillo-Rodríguez , José Emanuel Aguilar-Delgado , José Daniel Sánchez-Vásquez , Raúl Balderas-Navarro , Carlos Manuel Guerra-Galicia , Marisol Reyes-Reyes

{"title":"Water-assisted chemical sintering of vanadium dioxide powder and its use for eicosane detection","authors":"Carlos Alberto Ibarra-Becerra , Benjamín Portillo-Rodríguez , José Emanuel Aguilar-Delgado , José Daniel Sánchez-Vásquez , Raúl Balderas-Navarro , Carlos Manuel Guerra-Galicia , Marisol Reyes-Reyes","doi":"10.1016/j.ceramint.2025.01.183","DOIUrl":"10.1016/j.ceramint.2025.01.183","url":null,"abstract":"<div><div>We report a straightforward water-assisted chemical sintering to procedure a predominantly monoclinic (M) phase vanadium dioxide (VO2) powder-based substrate. This substrate was tested as a platform to enhance the Raman signal for the initial characterization of eicosane as an analyte. The Raman enhancement activity produced by VO2(M) powder was synthesized by reacting vanadium pentoxide (V2O5) with oxalic acid (H2C2O4) in a molar ratio of 1:5. The VO2 - 1:5 powder sample showed a lower crystallinity and higher solubility than the sample synthesized with a reduced concentration of oxalic acid. After signal magnification on the analyte-VO2 - 1:5 - H2O -substrate, the position and intensity of the observed Raman bands suggest an analyte-surface interaction through to the interplay of two enhancement mechanisms: charge transfer (chemical) and an electromagnetic (EM), possibly by oxygen vacancies. Furthermore, a possible route for an Enhancement Factor (EF) for eicosane on this surface type is discussed. The final data indicated that the proposed synthesis process is ideal for developing a surface with Raman enhancement activity, which is why it is suggested as a biomolecule detection platform.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 13394-13402"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815562","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

Novel low-shrinkage and soluble heavy calcium carbonate matrix ceramic cores prepared by binder jetting 用粘结剂喷射法制备新型低收缩可溶重质碳酸钙基陶瓷芯

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-04-01 DOI: 10.1016/j.ceramint.2025.01.184

Xiaopeng Yu, Yanqing Niu, Wenming Jiang, Li Yang, Ziwei Peng, Qingsong Wei, Zitian Fan

{"title":"Novel low-shrinkage and soluble heavy calcium carbonate matrix ceramic cores prepared by binder jetting","authors":"Xiaopeng Yu, Yanqing Niu, Wenming Jiang, Li Yang, Ziwei Peng, Qingsong Wei, Zitian Fan","doi":"10.1016/j.ceramint.2025.01.184","DOIUrl":"10.1016/j.ceramint.2025.01.184","url":null,"abstract":"<div><div>In the present work, the novel low-shrinkage and soluble heavy calcium carbonate matrix ceramic cores were developed using binder jetting (BJ) technology with SiO2 as an additive and heavy calcium carbonate (HCC, CaMg(CO3)2) as the matrix material. The effect of SiO2 content on the sintering shrinkage, properties and solubility of the ceramic cores was systematically investigated. It was found that the addition of SiO2 significantly improved the shrinkage of the ceramic cores. As the amount of SiO2 increased, the shrinkage in all axes of the ceramic cores decreased, but excessive SiO2 led to excessive liquid phase sintering, which caused an increase in shrinkage. When the SiO2 addition was 6 wt%, the shrinkages in the X, Y, and Z axes were 7.09, 7.48, and 9.45 %, respectively, representing a 70 % decrease compared to the cores without SiO2. Conversely, the bending strength of the ceramic cores initially decreased and then increased with the increase in SiO2 content. The lowest bending strength of 4.93 MPa was observed at 6 wt% SiO2 content. Although the strength of the ceramic cores is lower under this condition, it still meets the requirements for practical production. The soluble ceramic cores begin to disintegrate after being immersed in hot water for 10 min, with significant disintegration observed after 60 min, indicating that the ceramic cores fabricated in this study possess good solubility.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 13403-13411"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815563","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

Sm-doped CdS nanocrystals gas sensor for n-butanol detection 用于检测正丁醇的 Sm 掺杂 CdS 纳米晶体气体传感器

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-04-01 DOI: 10.1016/j.ceramint.2025.01.047

Kaiwen Zhou , Chen Yue , Mengxue Kang , Zhiguo Yang , Feifei Wang , Xiaoning Wang , Davoud Dastan , Xi-Tao Yin , Xiaoguang Ma

{"title":"Sm-doped CdS nanocrystals gas sensor for n-butanol detection","authors":"Kaiwen Zhou , Chen Yue , Mengxue Kang , Zhiguo Yang , Feifei Wang , Xiaoning Wang , Davoud Dastan , Xi-Tao Yin , Xiaoguang Ma","doi":"10.1016/j.ceramint.2025.01.047","DOIUrl":"10.1016/j.ceramint.2025.01.047","url":null,"abstract":"<div><div>In this article, a one-step hydrothermal method for the preparation of samarium-loaded CdS sensing material is firstly given as a n-butanol gas sensor. The optimum operating temperature and selective performance of the gas sensor were tested, and the results indicated that the sensor has good selectivity to n-butanol. The response value to 100 ppm n-butanol gas can reach 51 which is almost three times higher than pristine CdS gas sensor at optimum operating temperature 225 °C and the response/recovery time is 19 s/8 s. In addition, the response in different n-butanol concentrations was further tested and its repeatability and long-term stability were also analyzed. In addition, the structure, elemental composition and surface morphology of the materials were analyzed by the X-ray electron spectroscopy (XPS), scanning electron microscope (SEM), transmission electron microscope (TEM), and X-ray diffraction (XRD). Based on the above research, the excellent sensing performance of Sm-doped CdS gas sensors to n-butanol are explained comprehensively.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 9","pages":"Pages 11952-11960"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815072","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

Bright orange-yellow emission from lead-free double perovskite single crystals with an indirect band gap 具有间接带隙的无铅双钙钛矿单晶发出明亮的橙黄色辐射

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-04-01 DOI: 10.1016/j.ceramint.2024.12.556

Xianzhong Shi , Shifeng Sun , Ruiyu Mi , Ziyao Wang , Weiwei Lin , Baochen Wang

{"title":"Bright orange-yellow emission from lead-free double perovskite single crystals with an indirect band gap","authors":"Xianzhong Shi , Shifeng Sun , Ruiyu Mi , Ziyao Wang , Weiwei Lin , Baochen Wang","doi":"10.1016/j.ceramint.2024.12.556","DOIUrl":"10.1016/j.ceramint.2024.12.556","url":null,"abstract":"<div><div>As a novel class of luminescent material, double perovskite still encounters the problem of low luminescence efficiency. Previous reports suggested that manipulating the band gap from indirect to direct, or breaking the inversion-symmetry-induced parity-forbidden transition, can lead to a dramatic increase in emission. Our study designs a series of Cs2AgBi1-xInxCl6 double perovskite single crystals. Notably, we observe over one hundredfold luminescence enhancement in Cs2AgBi0.2In0.8Cl6 with an indirect band gap. The absorption and photoluminescence spectra suggest that an appropriate Bi/In ratio opens radiative transition channels. Furthermore, the density functional theory calculation verifies that the significant luminescence improvement is attributed to the increase in transition matrix elements of the optimal Cs2AgBi0.2In0.8Cl6, which promotes radiative recombination of photo-induced charge carriers. These carries relax to the self-trapped exciton state, and result in strong emission. Our study demonstrates that in addition to band gap type and transition parity, the transition matrix element also accounts for the photoelectric performance of double perovskite, which should be taken into consideration when designing lead-free double perovskites for optoelectronic applications.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 9","pages":"Pages 11372-11377"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814854","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

Effects of alumina fibers on densification and thermal properties of BBSCA/Al2O3 low temperature co-fired ceramic composites prepared via aqueous tape casting 氧化铝纤维对水带铸造法制备BBSCA/Al2O3低温共烧陶瓷复合材料致密化及热性能的影响

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-04-01 DOI: 10.1016/j.ceramint.2025.01.106

Jiali Li , Hanlu Xing , Shijie Xue , Tao Ma , Jun Sun , Kun Hu , Lin Chen , Xiaoxiao Li , Yi Gong , Xian Zhang , Xingyou Tian

{"title":"Effects of alumina fibers on densification and thermal properties of BBSCA/Al2O3 low temperature co-fired ceramic composites prepared via aqueous tape casting","authors":"Jiali Li , Hanlu Xing , Shijie Xue , Tao Ma , Jun Sun , Kun Hu , Lin Chen , Xiaoxiao Li , Yi Gong , Xian Zhang , Xingyou Tian","doi":"10.1016/j.ceramint.2025.01.106","DOIUrl":"10.1016/j.ceramint.2025.01.106","url":null,"abstract":"<div><div>The application field of low temperature co-fired ceramics (LTCC) has been further expanded with the development of electronic packaging technology. Nevertheless, during the preparation process, solvents often volatilize leading to toxicity to humans and environmental pollution. Furthermore, in certain applications, LTCC materials must possess higher strength and thermal conductivity. Herein, we developed a kind of Bi2O3-B2O3-SiO2-CuO-Al2O3(BBSCA)/Al2O3/Al2O3 fibers LTCC composites, synthesized by aqua-based molding and hot-press solid-state reaction method. The addition of Al2O3 fibers can construct the two-dimensional structure and enhance thermal conductivity of the composites. When the Al2O3 fibers content reaches 2 wt%, the resulting composite exhibits a significant bending strength of 308 MPa and an elevated thermal conductivity of 9.31 W/(m·K). Additionally, the composites exhibit excellent dielectric properties, with a dielectric constant of 10.17 and tanδ = 1.24 × 10−3 at 13 GHz. This work provides a novel approach to construct high-strength and high thermal conductivity LTCC based on environmentally friendly preparation processes.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12663-12672"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815091","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

Thermodynamic prediction of and synthesis of sulfoaluminate-phosphate cementitious material clinker using high magnesium solid waste 利用高镁固体废物合成硫铝酸盐-磷酸盐胶凝材料熟料的热力学预测与研究

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-04-01 DOI: 10.1016/j.ceramint.2025.01.110

Changzai Ren , Yuxiao Zhao , Kai Wu , Shuang Wu , Wenlong Wang , Lei Chen

{"title":"Thermodynamic prediction of and synthesis of sulfoaluminate-phosphate cementitious material clinker using high magnesium solid waste","authors":"Changzai Ren , Yuxiao Zhao , Kai Wu , Shuang Wu , Wenlong Wang , Lei Chen","doi":"10.1016/j.ceramint.2025.01.110","DOIUrl":"10.1016/j.ceramint.2025.01.110","url":null,"abstract":"<div><div>The extended setting time and hysteresis expansion characteristics of high magnesium solid waste restrict the large-scale utilization in cement. The novel sulfoaluminate-phosphate cementitious material (SAC-MKPC) clinker including MgO, 2CaO·SiO2 (C2S) and 3CaO·3Al2O3·CaSO4 (C4A3$), furthermore, MgO combined with KH2PO4 formed MgKPO4·6H2O in the hydration reaction, which eliminates the disadvantage of MgO in the cement system and significantly increases the use of high magnesium solid waste in cement production. The present work provides an prediction method based on thermodynamic calculations using FactSage software of thermodynamic data pertaining to the key phase C4A3$ and the interactions of representative oxides in the raw materials, and then, the accuracy of the prediction method was verified by experiment. Simulation results have shown that C4A3$ may be generated through four possible pathways, and the corrected standard formation enthalpy, standard Gibbs free energy, and standard entropy of C4A3$ are −8458.41 kJ mol−1, -8338.97 kJ mol−1, and 400.79 kJ mol−1, respectively. The simulation results obtained with FactSage showed good consistency with those obtained experimentally, confirming the main phases (MgO-C4A3$-C2S) can co-exist in the system CaO-SiO2-Al2O3-CaSO4-MgO at 1100–1300 °C. The results presented here not only provide theoretical support for the key thermodynamic data of C4A3$, but may also further the application of high magnesium solid waste in novel SAC-MKPC cement.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12711-12720"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815096","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

The luminescence enhancement of NaLaSiO4:Tb3+ green phosphor by co-substituting Si4+-O2-/La3+-O2- with B3+-F-/Ba2+-F- for white light-emitting diodes 用B3+- f -/Ba2+- f -共取代Si4+- o2 -/La3+- o2 -对白光二极管的发光增强

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-04-01 DOI: 10.1016/j.ceramint.2025.01.122

Xianzhu Zhou , Wentao Zhang , Zhou Zhao , Peicong Zhang , Ning Sun , Xiangkui Cheng

{"title":"The luminescence enhancement of NaLaSiO4:Tb3+ green phosphor by co-substituting Si4+-O2-/La3+-O2- with B3+-F-/Ba2+-F- for white light-emitting diodes","authors":"Xianzhu Zhou , Wentao Zhang , Zhou Zhao , Peicong Zhang , Ning Sun , Xiangkui Cheng","doi":"10.1016/j.ceramint.2025.01.122","DOIUrl":"10.1016/j.ceramint.2025.01.122","url":null,"abstract":"<div><div>Based on the green emission of NaLa0.82SiO4:0.18Tb3+ phosphor, the luminescence properties including intensity and stability of phosphor was effectively improved via the isomorphic substitution of crystal groups including [B3+-F-]→[Si4+-O2-] and [Ba2+-F-]→[La3+-O2-]. The luminescence intensities (λem = 544 nm) of NaLa0.82Si0.96B0.04O3.96F0.04:0.18Tb3+ and NaLa0.78Ba0.04SiO3.96F0.04:0.18Tb3+ increased to 4.22 times and 5.49 times that of NaLa0.82SiO4:0.18Tb3+, respectively. Moreover, even at an operating temperature of 423 K, these both phosphors retained 95 % of their initial luminescence intensity, demonstrating excellent thermal stability. Notably, the fabricated w-LEDs devices with the as-prepared green phosphors emitted a bright warm white light, which showing excellent colorimetric parameters of CCT = 4596 K and Ra = 89.2. The color gamut of fitted LCD reaches 75.16 % of the National Television System Committee (NTSC) standard. The results indicate that the NaLa0.82Si0.96B0.04O3.96F0.04:0.18Tb3+ and NaLa0.78Ba0.04SiO3.96F0.04:0.18Tb3+ green-emitting phosphors have great potential in the applications of LCD backlight and solid-state lighting.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 10","pages":"Pages 12831-12841"},"PeriodicalIF":5.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814936","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