Ceramics International最新文献_第2页

Exploring charge dynamics in CuO/Fe₂O₃-doped NiCo₂O₄/rGO nanocomposites for visible-light-driven photocatalysis

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-03-01 DOI: 10.1016/j.ceramint.2024.12.228

Memoona Rao , Ismat Bibi , Farzana Majid , Shagufta Kamal , Abida Kausar , Habib Elhouichet , Qasim Raza , Gul Fatima , Norah Alwadai , Munawar Iqbal

{"title":"Exploring charge dynamics in CuO/Fe₂O₃-doped NiCo₂O₄/rGO nanocomposites for visible-light-driven photocatalysis","authors":"Memoona Rao , Ismat Bibi , Farzana Majid , Shagufta Kamal , Abida Kausar , Habib Elhouichet , Qasim Raza , Gul Fatima , Norah Alwadai , Munawar Iqbal","doi":"10.1016/j.ceramint.2024.12.228","DOIUrl":"10.1016/j.ceramint.2024.12.228","url":null,"abstract":"<div><div>This study reports the synthesis of nickel cobaltite-based nanocomposites (NCPs) using cost-effective co-precipitation followed by ultrasonication. Nickel cobaltite (NCO@rGO-1) and CuO/Fe₂O₃-doped composites (NCCFO@rGO-2 to NCCFO@rGO-4) were synthesized with different dopant concentrations. The NCPs were characterized using XRD, PL, FTIR, UV–Vis, and Raman spectroscopy techniques. XRD analysis confirmed the formation of spinel cubic structures, showing a reduction in crystallinity with increased doping levels. Raman spectra displayed redshifts and intensity reduction with increased dopant levels, indicating the successful incorporation of CuO and Fe₂O₃. PL emission peaked at 632 nm, with intensity decreasing upon doping. UV–Vis spectra indicated a bandgap of 1.59 eV for the highly doped NCPs. Photocatalytic performance under visible light showed 95% degradation of cresol red (CR) dye in 80 min, aniline degradation of 89% in 120 min and 71% degradation of benzimidazole in 120 min with a rate constant of 0.03894 min⁻<sup>1</sup>, 0.01998 min⁻<sup>1</sup>, and 0.01175 min⁻<sup>1</sup>, respectively. Enhanced photocatalytic efficiency was attributed to improved charge separation and active sites provided by rGO, alongside a double Z-scheme mechanism facilitating electron transport. The NCPs exhibited stable performance over five recycling cycles, underscoring their potential for long-term pollutant removal. These findings suggest that the synthesized NCPs are promising candidates for sustainable wastewater treatment, contributing to environmental protection efforts.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 8231-8248"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512120","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

Influence of MoB2 and ZrB2 ceramic particles on the microstructure, electrical conductivity, and mechanical properties of copper matrix composites

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-03-01 DOI: 10.1016/j.ceramint.2024.12.361

Bo Li , Yimin Gao , Cong Li , Zhen Cao , Xingjuan Yao , Da Wu , Pucun Bai , Zhong Chen

{"title":"Influence of MoB2 and ZrB2 ceramic particles on the microstructure, electrical conductivity, and mechanical properties of copper matrix composites","authors":"Bo Li , Yimin Gao , Cong Li , Zhen Cao , Xingjuan Yao , Da Wu , Pucun Bai , Zhong Chen","doi":"10.1016/j.ceramint.2024.12.361","DOIUrl":"10.1016/j.ceramint.2024.12.361","url":null,"abstract":"<div><div>Boride ceramics are potential reinforcements for copper matrix composites due to their excellent mechanical and electrical properties. The synergistic effect of dual-phase and dual-scale boride can enhance both the wear resistance and electrical conductivity of composites. In this paper, MoB<sub>2</sub>-ZrB<sub>2</sub>/Cu hybrid composites with varying boride contents were prepared using spark plasma sintering. The microstructure and phase composition of these composites were characterized. The hardness, compressive strength, and tribological properties were measured. The results indicate that ZrB<sub>2</sub> microparticles and MoB<sub>2</sub> nanoparticles were dispersed within the Cu matrix. Additionally, the composites exhibited desirable interfacial bonding between the boride particles and the Cu matrix. The “hybrid effect” of the dual-phase borides enhanced the electrical conductivity, mechanical, and tribological properties of the MoB<sub>2</sub>-ZrB<sub>2</sub>/Cu composites. The wear mechanism of the MoB<sub>2</sub>-ZrB<sub>2</sub>/Cu composites involved a combination of abrasive wear, oxidation wear, and fatigue wear.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 9257-9269"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512255","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

α-Alumina (α-Al2O3) ceramic microfiltration membranes in industrial wastewater treatment: Production, design, filtration behavior and performance

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-03-01 DOI: 10.1016/j.ceramint.2024.12.454

Muhammet Ş.A. Eren, Hasan Arslanoğlu

引用次数: 0

Lightweight high-heat-resistance zirconia ceramic lattice screws prepared by photocuring 3D printing technology

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-03-01 DOI: 10.1016/j.ceramint.2024.12.429

Wei Chu, Jie Zhao, Xuzhao Ma, Fei Wang, Xiaoli Zhang, Yongcui Zhang, Zhuoqun Han, Lunan Bi, Hao Wang, Baosen Zhai, Qingxuan Zhou, Ling Li

{"title":"Lightweight high-heat-resistance zirconia ceramic lattice screws prepared by photocuring 3D printing technology","authors":"Wei Chu, Jie Zhao, Xuzhao Ma, Fei Wang, Xiaoli Zhang, Yongcui Zhang, Zhuoqun Han, Lunan Bi, Hao Wang, Baosen Zhai, Qingxuan Zhou, Ling Li","doi":"10.1016/j.ceramint.2024.12.429","DOIUrl":"10.1016/j.ceramint.2024.12.429","url":null,"abstract":"<div><div>Zirconia ceramics are renowned for their exceptional thermal stability, corrosion resistance and wear resistance, making them a key material in the fields of aerospace and military defense. This study utilized finite element simulation to design and select a lattice model with the low thermal conductivity, and its mechanical properties were experimentally verified. The results indicated that the bending strength of the lattice structure could reach 433 MPa and the heat transfer temperature at the tail was significantly reduced with a cell size of 3 mm square and a wire diameter of 1 mm. Compared to traditional solid structures, the fill rate was reduced by 25.90 %. Therefore, the lattice structure exhibits characteristics of high strength, light weight and low thermal conductivity. Furthermore, lightweight and high-heat-resistance zirconia ceramic lattice screws were successfully fabricated via using photocuring 3D printing technology, achieving the transition from theoretical simulation to component application. The research in this work provides an effective strategy for the fabrication of ceramic lattice screws with lightweight and high-heat-resistance performances and exhibit the potential application in aerospace and military defense fields.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 8","pages":"Pages 9970-9977"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593629","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

Suppressing lattice expansion inLi1.17Mn0.51Ni0.15Co0.15Al0.02O2 cathode for enhanced electrochemical performance via Ti4+ Doping

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-03-01 DOI: 10.1016/j.ceramint.2024.12.436

Yufan Feng, Chengkang Chang, Jiening Zheng

{"title":"Suppressing lattice expansion inLi1.17Mn0.51Ni0.15Co0.15Al0.02O2 cathode for enhanced electrochemical performance via Ti4+ Doping","authors":"Yufan Feng, Chengkang Chang, Jiening Zheng","doi":"10.1016/j.ceramint.2024.12.436","DOIUrl":"10.1016/j.ceramint.2024.12.436","url":null,"abstract":"<div><div>Layered lithium-rich oxides, characterized by their high safety, low cost, and high energy density, are widely regarded as potential contenders for cathode materials in energy storage technologies. Nevertheless, the practical implementation of these materials faces significant hurdles, with severe capacity degradation during cycling being the most intractable issue. In this study, Ti doping in the cathode is achieved by a high-temperature solid-phase approach to address these obstacles and enhance the performance of Li<sub>1.17</sub>Mn<sub>0.51</sub>Ni<sub>0.15</sub>Co<sub>0.15</sub>Al<sub>0.02</sub>O<sub>2</sub> (LNCMA) cathode material. Notably, at 0.1C, LNCMA-2.5%Ti displayed a discharge capacity of 270.8 mAh·g<sup>−1</sup> with a coulombic efficiency of 84.9 %, whereas the pristine material delivered 224.3 mAh·g<sup>−1</sup> and 80.2 %. After 100 cycles at 0.5C, LNCMA-2.5%Ti material maintained an impressive capacity retention rate of 97.5 %, which is higher than the value for the pristine material (88.7 %). The exceptional electrochemical performance observed can be mainly attributed to the high bond energy of the Ti-O bond, which effectively reduces the lattice expansion of the material during cycling, stabilizes the lattice structure, and consequently suppresses voltage degradation while enhancing cyclic performance. Furthermore, the introduction of Ti into the lattice structure also widens the spacing between lithium layers, which consequently decreases the migration barrier and promotes the rate performance. Consequently, the LNCMA-2.5%Ti cathode displayed excellent rate performance with a specific capacity of 148 mAh·g<sup>−1</sup> at 5C. The electrochemical performance revealed above indicates a high potential for the material to be considered as a cathode option for high-energy batteries.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 8","pages":"Pages 10051-10060"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593636","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

Experimental determination of the Phase Equilibrium of CaO-Ce2O3-SiO2-(5–25 wt%) Al2O3 System at 1873K

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-03-01 DOI: 10.1016/j.ceramint.2024.12.416

Mengchuan Li , Tongsheng Zhang , Rensheng Li

{"title":"Experimental determination of the Phase Equilibrium of CaO-Ce2O3-SiO2-(5–25 wt%) Al2O3 System at 1873K","authors":"Mengchuan Li , Tongsheng Zhang , Rensheng Li","doi":"10.1016/j.ceramint.2024.12.416","DOIUrl":"10.1016/j.ceramint.2024.12.416","url":null,"abstract":"<div><div>The thermodynamic data of rare earth-containing systems are crucial for the development and application of permanent magnets, optoelectronic materials, high-temperature superconducting materials, and catalysts. In this study, the equilibrium phase compositions of the CaO-Ce<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-(5–25 wt%) Al<sub>2</sub>O<sub>3</sub> system at 1873 K were investigated through high-temperature equilibrium experiments. The equilibrium phase compositions at 1873 K were determined using SEM, XRD, and EPMA, leading to the construction of isothermal sections. For the CaO-Ce<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-5 wt% Al<sub>2</sub>O<sub>3</sub> system, the isothermal cross-section diagram revealed a liquid phase region, four distinct two-phase equilibria, and two different three-phase equilibria. As the Al<sub>2</sub>O<sub>3</sub> content increased to 25 wt%, the isothermal cross-section diagram showed a liquid phase region, five different two-phase equilibria, and three distinct three-phase equilibria. The experimental results provide valuable insights for further research on the practical applications of cerium-containing rare earths in various fields.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 8","pages":"Pages 9842-9851"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593739","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

Negative thermal expansion effects boosting NIR-II luminescence in Yb2W3O12:Nd3+ film with silica shell

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-03-01 DOI: 10.1016/j.ceramint.2024.12.411

Keliang Ruan , Dongming Pi , Shilei Yan , Yingzhu Zi , Imran Khan , Yue Liu , Anjun Huang , Jianbei Qiu , Yangke Cun , Cherkasova Tatiana , Zhengwen Yang

{"title":"Negative thermal expansion effects boosting NIR-II luminescence in Yb2W3O12:Nd3+ film with silica shell","authors":"Keliang Ruan , Dongming Pi , Shilei Yan , Yingzhu Zi , Imran Khan , Yue Liu , Anjun Huang , Jianbei Qiu , Yangke Cun , Cherkasova Tatiana , Zhengwen Yang","doi":"10.1016/j.ceramint.2024.12.411","DOIUrl":"10.1016/j.ceramint.2024.12.411","url":null,"abstract":"<div><div>Lanthanide ions doped near-infrared II(NIR-II) emitting luminescent materials have attracted widespread attention in temperature sensing and biological imaging. However, the NIR-II luminescence of crystals doped with lanthanide ions still faces the problem of fluorescence Thermal quenching (TQ). Negative thermal expansion (NTE) materials exhibit lattice contraction, leading to enhanced energy transfer between lanthanide ions and achieving thermal enhancement at high temperatures. Herein, the NTE Yb<sub>2</sub>W<sub>3</sub>O<sub>12</sub>: Nd<sup>3+</sup> films were prepared by sol-gel method. The thermal enhancement of Nd<sup>3+</sup> doping Yb<sub>2</sub>W<sub>3</sub>O<sub>12</sub>:Nd<sup>3+</sup> NTE films under 808 nm excitation due to the lattice contraction of Yb<sub>2</sub>W<sub>3</sub>O<sub>12</sub>, which leads to an increase in energy transfer from Nd<sup>3+</sup> to Yb<sup>3+</sup> ions, achieving 4.00 fold enhancement at 573 K. The Yb<sub>2</sub>W<sub>3</sub>O<sub>12</sub>:Nd<sup>3+</sup> film with SiO<sub>2</sub> shell to investigate the effect of hygroscopicity. The SiO<sub>2</sub> coating effectively suppressed the moisture absorption of Yb<sub>2</sub>W<sub>3</sub>O<sub>12</sub>:Nd<sup>3+</sup> film, maintaining absolute emission intensity of 15.00 fold at 573 K compared to room temperature. This work not only provides a feasible strategy for designing efficient and heat-resistant NIR-II luminescent materials, but also an effective new method for suppressing the moisture absorption of NTE materials.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 8","pages":"Pages 9800-9806"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593775","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

Influence of blocking layer on Hf and V doped perovskite structured SrSnO3 for highly efficient dye-sensitized solar cells

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-03-01 DOI: 10.1016/j.ceramint.2024.12.471

M. Theanmozhi, K. Sasikumar, R. Jude Vimal Michael

{"title":"Influence of blocking layer on Hf and V doped perovskite structured SrSnO3 for highly efficient dye-sensitized solar cells","authors":"M. Theanmozhi, K. Sasikumar, R. Jude Vimal Michael","doi":"10.1016/j.ceramint.2024.12.471","DOIUrl":"10.1016/j.ceramint.2024.12.471","url":null,"abstract":"<div><div>SrSnO<sub>3</sub> doped with hafnium and vanadium (SrSnO<sub>3</sub>: Hf, V) nanostructures have been effectively created using the precipitation method followed by heat treatment. A thorough examination of the structural, morphological, and physical characteristics of the prepared materials has been conducted. Subsequently, these samples have been employed as a blocking layer in dye-sensitive solar cells to assess their photovoltaic properties. The XRD pattern and refinement parameters confirm that an orthorhombic perovskite crystal structure with structural purity has been formed. FTIR spectra identify the presence of metal oxide (Sn-O) vibrations at 644 and 647 cm<sup>−1</sup>. The active Raman modes due to Sn-O movements are observed at 225 & 223 cm<sup>−1</sup> for Hf and V doped samples. The electron micrographs disclose the nanorods for all the samples. The deconvoluted XPS spectra reveal the oxidation state and oxygen vacancies. The incorporation of dopants into SrSnO<sub>3</sub> results in a change in surface area from 11.8 to 9.2 m<sup>2</sup>/g. UV–visible spectra are used to investigate the steep optical absorption behaviour of the prepared materials. Bandgap alteration evidences the interaction of Hf and V with the Sr-Sn-O lattice. The multi-colour emission in the photoluminescence spectra confirms the presence of defects in the samples, a fact also confirmed by the XPS spectra. The blocking layer made with Hf and V-doped samples prevents back electron transfer, resulting in a significant improvement in photovoltaic performance. Vanadium (V1)-doped SrSnO<sub>3</sub>, with Jsc (9.36 mA/cm<sup>2</sup>), Voc (0.828 V), and fill factor (74 %), exhibits the highest efficiency. These results provide a pathway for blocking layer research, particularly in oxide-based perovskite materials.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 8","pages":"Pages 10383-10394"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594068","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

Preparation of β-Ga2O3/ε-Ga2O3 type II phase junctions by atmospheric pressure chemical vapor deposition

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-03-01 DOI: 10.1016/j.ceramint.2024.12.472

Xianxu Li , Jiale Niu , Lijian Bai , Xue Jing , Dongwen Gao , Jiajun Deng , Fangchao Lu , Wenjie Wang

{"title":"Preparation of β-Ga2O3/ε-Ga2O3 type II phase junctions by atmospheric pressure chemical vapor deposition","authors":"Xianxu Li , Jiale Niu , Lijian Bai , Xue Jing , Dongwen Gao , Jiajun Deng , Fangchao Lu , Wenjie Wang","doi":"10.1016/j.ceramint.2024.12.472","DOIUrl":"10.1016/j.ceramint.2024.12.472","url":null,"abstract":"<div><div>We synthesized β-Ga<sub>2</sub>O<sub>3</sub>/ε-Ga<sub>2</sub>O<sub>3</sub> phase junctions by exploiting distinct crystalline phases in gallium oxide through a one-step atmospheric-pressure chemical vapor deposition process on sapphire substrates, adjusting parameters such as temperature and gas flow rate accordingly. The coexistence of these two crystalline phases was verified via X-ray diffraction (XRD) and Raman spectroscopy analyses, while optical microscopy provided visual evidence regarding surface morphology changes throughout phase junction formation stages. Furthermore, we utilized a UV–visible spectrophotometer to quantify the bandgap and integrated this data with X-ray photoelectron spectroscopy (XPS) analysis of core level peaks and valence band spectra in order to construct an energy level structure for the β-Ga<sub>2</sub>O<sub>3</sub>/ε-Ga<sub>2</sub>O<sub>3</sub> phase junction. Our findings demonstrate that this phase junction exhibits a type II energy band alignment, with measured valence and conduction band offsets of 0.54 eV and 0.41 eV respectively. This discovery holds significant implications for self-powered photodetectors utilizing gallium oxide as well as other potential applications.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 8","pages":"Pages 10395-10401"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594069","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

Design of high-entropy rare-earth disilicate materials for thermal environmental barrier coatings through thermal-mechanical experiments and finite element simulation studies

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-03-01 DOI: 10.1016/j.ceramint.2024.12.487

Kaibin Li , Weize Wang , Shan-Tung Tu , Shilong Yang , Xiao Lu , Yangguang Liu , Hongchen Li , Wenkang Zhang , Changliang Wang , Xiuxin Du

{"title":"Design of high-entropy rare-earth disilicate materials for thermal environmental barrier coatings through thermal-mechanical experiments and finite element simulation studies","authors":"Kaibin Li , Weize Wang , Shan-Tung Tu , Shilong Yang , Xiao Lu , Yangguang Liu , Hongchen Li , Wenkang Zhang , Changliang Wang , Xiuxin Du","doi":"10.1016/j.ceramint.2024.12.487","DOIUrl":"10.1016/j.ceramint.2024.12.487","url":null,"abstract":"<div><div>Multifunctional thermal environmental barrier coatings (TEBCs) with suitable thermal-mechanical properties and low thermal stresses are urgently needed to address the composite demands of thermal barrier coatings (TBCs) and environmental barrier coatings (EBCs) for silicon carbide ceramic matrix composites (SiC CMCs) structural components in aero-engines, while the development of high-entropy rare-earth disilicates provides a new opportunity. In this study, based on the doping weight values of different rare-earth elements and the periodic orthogonal incremental doping rules, 16 types of rare-earth disilicate ceramics were prepared by the solid-phase reaction method. The microstructures, thermal-mechanical properties, thermal mismatch stresses, and simulated thermal cycling stresses were investigated. A 4 × 4 thermal-mechanical periodic table for the prepared disilicates was creatively plotted and analyzed. When different rare-earth elements are doped in the Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> crystal structure, they lead to different changes in phase stability, thermal conductivity, thermal expansion coefficient, microhardness, Young's modulus, fracture toughness, and thermal stresses. However, among all the prepared disilicates, the high-entropy material (Sc<sub>0.2</sub>Y<sub>0.2</sub>Er<sub>0.2</sub>Yb<sub>0.2</sub>Lu<sub>0.2</sub>)<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> not only demonstrates lower thermal conductivity and a suitable thermal expansion coefficient, but also exhibits higher microhardness and Young's modulus, as well as reduced thermal cycling stress when applied as coatings, making it the most desirable candidate for TEBCs.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 8","pages":"Pages 10551-10573"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594222","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