Ceramics International最新文献_第8页

Efficient near-infrared luminescence in phosphate Na2AlTi(PO4)3:Cr3+ for light-emitting-diodes applications 用于发光二极管的磷酸Na2AlTi(PO4)3:Cr3+的高效近红外发光

IF 5.6 2区材料科学

Ceramics International Pub Date : 2026-04-01 Epub Date: 2026-02-10 DOI: 10.1016/j.ceramint.2026.02.113

Nasi Yu , Wenhua Li , Jiyou Zhong

{"title":"Efficient near-infrared luminescence in phosphate Na2AlTi(PO4)3:Cr3+ for light-emitting-diodes applications","authors":"Nasi Yu , Wenhua Li , Jiyou Zhong","doi":"10.1016/j.ceramint.2026.02.113","DOIUrl":"10.1016/j.ceramint.2026.02.113","url":null,"abstract":"<div><div>Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) have an extensive range of applications within multiple fields, such as bioimaging, night vision and non-destructive examination. Therefore, developing broadband, low-cost, and efficient NIR phosphors capable of satisfying the demands of the above applications is desired. In this work, a series of inexpensive phosphate Na<sub>2</sub>AlTi(PO<sub>4</sub>)<sub>3</sub>:Cr<sup>3+</sup> phosphors were developed. This material shows a broadband NIR emission covering 700-1200 nm with emission peak located at 830 nm and a full width at half maximum (FWHM) of 152 nm under 470 nm excitation. Moreover, the photoluminescence quantum yield (PLQY) can be optimized to 79.1%, suggesting a high efficiency among octahedral Al<sup>3+</sup>-containing NIR materials. Finally, a prototype NIR pc-LED device was fabricated via directly coating the InGaN blue LED chip with the optimized Na<sub>2</sub>AlTi(PO<sub>4</sub>)<sub>3</sub>:Cr<sup>3+</sup> phosphor. The NIR output power of the device was determined to be 17.24 mW at 100 mA driving current, and the corresponding NIR photoelectric conversion efficiency was 7.51%, indicating the excellent output performance, and good potential in practical applications.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 10","pages":"Pages 14775-14782"},"PeriodicalIF":5.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636561","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

Induced interface engineering of HEAs: improving the strong absorption peak and bandwidth of electromagnetic waves HEAs的诱导界面工程：提高电磁波的强吸收峰和带宽

IF 5.6 2区材料科学

Ceramics International Pub Date : 2026-04-01 Epub Date: 2026-02-03 DOI: 10.1016/j.ceramint.2026.02.016

Yang Xu , Benqiang Wang , Chaowen Deng , Qiubei Ye , Ruoyu Yang , Qinghui Shi , Tingdong Zhou

{"title":"Induced interface engineering of HEAs: improving the strong absorption peak and bandwidth of electromagnetic waves","authors":"Yang Xu , Benqiang Wang , Chaowen Deng , Qiubei Ye , Ruoyu Yang , Qinghui Shi , Tingdong Zhou","doi":"10.1016/j.ceramint.2026.02.016","DOIUrl":"10.1016/j.ceramint.2026.02.016","url":null,"abstract":"<div><div>High-entropy alloys (HEAs) present significant potential for electromagnetic wave (EMW) absorption. At present, most studies focus on the influence of composition and structure on electromagnetic wave absorption performance, in which the high proportion of metal components in HEAs leads to high conductivity, resulting in impedance mismatch and insufficient microwave absorption performance, and the excellent magnetic loss mechanism cannot be expressed. To address this issue, nickel-zinc ferrite is introduced on the surface of HEAs to optimize impedance matching and enrich the loss mechanism. The nickel-zinc ferrite was uniformly grown on the surface of HEAs by the in-situ growth method in hydrothermal method. It is worth mentioning that when the addition amount of Ni<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> reaches 30 wt%, the minimum reflection loss (<em>RL</em><sub><em>min</em></sub>) reaches −64.85 dB, and the effective absorption bandwidth (<em>EAB</em>) reaches 4.18 GHz at a thickness of 1.8 mm, almost covering the entire Ku band. This work demonstrates the great promise of HEA-based composites as high-performance EMW absorbers and provides a novel strategy for their development.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 10","pages":"Pages 13747-13755"},"PeriodicalIF":5.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636628","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

Bending strength increase of silicon carbide by density gradient structure design by direct ink writing 用密度梯度结构设计提高碳化硅的抗弯强度

IF 5.6 2区材料科学

Ceramics International Pub Date : 2026-04-01 Epub Date: 2026-02-06 DOI: 10.1016/j.ceramint.2026.02.018

Hiroki Kurita , Zhenjin Wang , Teppei Kudo , Teruyoshi Kanno , Tetsuya Uchimoto , Hiroyuki Noto , Laurent Gremillard , Sandrine Cottrino , Fumio Narita

{"title":"Bending strength increase of silicon carbide by density gradient structure design by direct ink writing","authors":"Hiroki Kurita , Zhenjin Wang , Teppei Kudo , Teruyoshi Kanno , Tetsuya Uchimoto , Hiroyuki Noto , Laurent Gremillard , Sandrine Cottrino , Fumio Narita","doi":"10.1016/j.ceramint.2026.02.018","DOIUrl":"10.1016/j.ceramint.2026.02.018","url":null,"abstract":"<div><div>In this study, density-gradient silicon carbide (SiC) was fabricated using direct ink writing with alumina and yttria as sintering additives. The structure in which a high-density layer is sandwiched between low-density layers exhibited a 48% increase in bending strength compared to a monolithic high-density structure. High-speed camera imaging revealed that cracks in all bending tests consistently initiated on the bottom surface of the specimen, where tensile stress is applied. In the structure in which a high-density layer is sandwiched between low-density layers, the compressive stress in the low-density layer suppressed crack initiation, and the residual stress was highest at the interface between high- and low-density layers. This design concept suggests that using a relatively low-density structure on the SiC surface, where cracks are likely to initiate, and minimizing the distance from the SiC surface to the interface between high- and low-density layers can enhance crack initiation suppression and improve bending strength.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 10","pages":"Pages 13766-13773"},"PeriodicalIF":5.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636630","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 barrier layers on the performance of triple-layer electrolyte supported reversible solid oxide cells 阻挡层对三层电解质支持的可逆固体氧化物电池性能的影响

IF 5.6 2区材料科学

Ceramics International Pub Date : 2026-04-01 Epub Date: 2026-02-03 DOI: 10.1016/j.ceramint.2026.02.022

Hajin Lee , Muhammad Pramaditya Garry Hanantyo , Junghyun Park , Saron Park , Jun-Young Park , Sun-Ju Song

{"title":"Effects of barrier layers on the performance of triple-layer electrolyte supported reversible solid oxide cells","authors":"Hajin Lee , Muhammad Pramaditya Garry Hanantyo , Junghyun Park , Saron Park , Jun-Young Park , Sun-Ju Song","doi":"10.1016/j.ceramint.2026.02.022","DOIUrl":"10.1016/j.ceramint.2026.02.022","url":null,"abstract":"<div><div>This study presents a high-performance triple-layer electrolyte architecture for electrolyte-supported reversible solid oxide cells (RSOCs). The structure consists of a highly conductive 1 mol% ceria-doped 10 mol% scandia-stabilized zirconia (1Ce10ScSZ) core electrolyte, sandwiched between two dense and functionally distinct barrier layers. This design addresses the major limitations of 1Ce10ScSZ, namely conductivity degradation under reducing conditions at the fuel electrode and interfacial reactions with Sr-based air electrodes. Through a comparative analysis of GDC- and YSZ-based degradation barrier layers, we found that highly dense Ce-based barriers induce interfacial instability and a pronounced low-frequency response associated with large chemical capacitance (2.49 F cm<sup>−2</sup>), as revealed by EIS and DRT analyses. In contrast, the optimized triple-layer configuration incorporating dense YSZ degradation barrier effectively suppresses Ce reduction by serving as an oxygen chemical potential (<em>μ</em>O<sub>2</sub>) buffer, thereby maintaining interfacial integrity under both fuel cell (FC) and electrolysis cell (EC) operating conditions. As a result, the optimized cell demonstrates record-high performance among electrolyte-supported RSOCs, achieving a power density of 1.29 W cm<sup>−2</sup> at 800 °C in FC mode and a current density of 1.26 A cm<sup>−2</sup> at 1.3 V and 800 °C in EC mode. Moreover, the cell exhibits approximately 30% improved long-term durability compared to the corresponding bi-layer electrolyte-supported cells.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 10","pages":"Pages 13790-13799"},"PeriodicalIF":5.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636632","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

Geopolymerization of halloysite clay nanotubes mixed with hydroxypropyl cellulose for development of composite films with flame resistance properties 高岭土粘土纳米管与羟丙基纤维素的地聚合制备阻燃复合薄膜

IF 5.6 2区材料科学

Ceramics International Pub Date : 2026-04-01 Epub Date: 2025-06-18 DOI: 10.1016/j.ceramint.2025.06.260

Alessandro Lo Bianco, Martina Maria Calvino, Giuseppe Lazzara, Stefana Milioto, Giuseppe Cavallaro

{"title":"Geopolymerization of halloysite clay nanotubes mixed with hydroxypropyl cellulose for development of composite films with flame resistance properties","authors":"Alessandro Lo Bianco, Martina Maria Calvino, Giuseppe Lazzara, Stefana Milioto, Giuseppe Cavallaro","doi":"10.1016/j.ceramint.2025.06.260","DOIUrl":"10.1016/j.ceramint.2025.06.260","url":null,"abstract":"<div><div>The growing demand for sustainable and high-performant materials has driven interest in geopolymers, which are known for their outstanding thermal stability and fire resistance. This study focuses on the conversion of hydroxypropyl cellulose/halloysite composite film (containing 70 wt% of clay nanofiller) to geopolymer with flame retardant action and high thermal stability. The effects of the geopolymerization on the structural, mechanical and thermal properties of the film have been investigated. The geopolymeric material possesses superior tensile resistance and higher thermal stability as compared with those of the composite film. According to non-isothermal thermogravimetric analysis, the presence of clay nanotubes and their consequent geopolymerization reduce the activation energy of hydroxypropyl cellulose degradation, while wettability experiments highlighted that both composite film and geopolymer are hydrophilic materials as evidenced by their initial water contact angle (ca.15°). Remarkably, the composite geopolymer immediately stops the flame propagation due to the presence of heat barrier layers. On the other hand, the addition of halloysite within hydroxypropyl cellulose film generates a reduction of the burning rate (from 0.5 to 0.08 cm<sup>2</sup>/s) evidencing that clay nanotubes (before geopolymerization) act as flame retardant fillers.</div><div>This work demonstrates that the combination of hydroxylpropylcellulose and halloysite clay nanotubes is promising to obtain sustainable geopolymeric materials with specific functionalities, such as fire resistance, useful for various technological and engineering applications.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 10","pages":"Pages 15130-15138"},"PeriodicalIF":5.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636647","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

Valorisation of wood biomass wastes in alkali-activated mortar with hybrid activator 混合活化剂在碱活化砂浆中活化木材生物质废弃物的研究

IF 5.6 2区材料科学

Ceramics International Pub Date : 2026-04-01 Epub Date: 2025-07-16 DOI: 10.1016/j.ceramint.2025.07.165

Yiying Du, Ina Pundienė, Jolanta Pranckevičienė

{"title":"Valorisation of wood biomass wastes in alkali-activated mortar with hybrid activator","authors":"Yiying Du, Ina Pundienė, Jolanta Pranckevičienė","doi":"10.1016/j.ceramint.2025.07.165","DOIUrl":"10.1016/j.ceramint.2025.07.165","url":null,"abstract":"<div><div>The application of wood biomass for energy production as a clean renewable source is increasingly welcomed, which brings forth the problem of biomass waste management. Besides the possible usage in cement-based materials, a more sustainable alternative is to incorporate them in alkali-activated materials which have less greenhouse gas emissions. In this background, this study focuses on the development of alkali-activated mortar with wood biomass ash (WBA), recycled sand (RS) and hybrid activators, consisting of sodium hydroxide (SH) and calcium hydroxide (CH) up to 20 % by precursor mass. Test specimens were evaluated regarding physical and mechanical properties, microstructural development, and environmental impacts. The outcomes demonstrated considerable enhancement in mechanical strength by 230 and 290 %, respectively, after the hybrid addition of 10 % CH and heat treatment at 60 °C for 24 h, which increased activation degree and densified the microstructure. The highest mechanical strength was achieved when 50 % of biomass bottom ash was incorporated with 50 % biomass fly ash. Based on the lifecycle assessment, the valorisaton of wood biomass wastes significantly improved eco-efficiency, and the hybrid incorporation of CH was more sustainable than the sole use of SH.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 10","pages":"Pages 15172-15187"},"PeriodicalIF":5.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636651","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

Temperature-dependent highly efficient sensitivity and stable white emission of NaLn(WO4)2 (Ln = Y, Yb, Er, Ho, Tm) sub-micron particle NaLn(WO4)2 （Ln = Y, Yb, Er, Ho, Tm）亚微米粒子的温度依赖高效灵敏度和稳定白光发射

IF 5.6 2区材料科学

Ceramics International Pub Date : 2026-04-01 Epub Date: 2026-02-04 DOI: 10.1016/j.ceramint.2026.02.037

Xinyu Cheng, Bo Zhang, Zhengwei Wang, Hao Zhang, Qi Han

{"title":"Temperature-dependent highly efficient sensitivity and stable white emission of NaLn(WO4)2 (Ln = Y, Yb, Er, Ho, Tm) sub-micron particle","authors":"Xinyu Cheng, Bo Zhang, Zhengwei Wang, Hao Zhang, Qi Han","doi":"10.1016/j.ceramint.2026.02.037","DOIUrl":"10.1016/j.ceramint.2026.02.037","url":null,"abstract":"<div><div>Single/dual(Er<sup>3+</sup>/Yb<sup>3+</sup>, Tm<sup>3+</sup>/Ho<sup>3+</sup>/Yb<sup>3+</sup>) activator systems doped NaLn(WO<sub>4</sub>)<sub>2</sub> up-conversion luminescence sub-micron particles are successfully synthesized via the sol-gel method. The effects of the molar ratio of citric acid to rare-earth ions, pH value and dopant concentration on the luminescence properties are systematically investigated, ultimately determining the optimal conditions for maximum emission intensity. Under 980 nm laser excitation, luminescence color modulation and high-quality white emission in single/dual activator sub-micron particles are investigated by varying the excitation power and temperature. The thermal stability of white emission is analyzed under multiple cycles. Finally, the temperature sensing properties of the single/dual activator doped systems are evaluated based on the non-thermal coupling energy levels. The change of absolute and relative sensitivities is discussed as the Yb<sup>3+</sup> doping concentration increases within the range of 303-503 K. This study systematically investigates the up-conversion luminescence color modulation, white emission generation and high sensitivity of the NaLn(WO<sub>4</sub>)<sub>2</sub> sub-micron particle, providing the experimental foundation for its applications in multi-mode optical displays and high-sensitivity optical temperature sensing.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 10","pages":"Pages 13971-13984"},"PeriodicalIF":5.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636716","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

Low temperature sintering of B4C-YAS: Microstructure and mechanical properties 低温烧结B4C-YAS的显微组织和力学性能

IF 5.6 2区材料科学

Ceramics International Pub Date : 2026-04-01 Epub Date: 2026-02-04 DOI: 10.1016/j.ceramint.2026.02.039

Meijing Wang , Haoyi Wang , Zhongkan Ren , Jiazhu Li , Zhuhui Qiao

{"title":"Low temperature sintering of B4C-YAS: Microstructure and mechanical properties","authors":"Meijing Wang , Haoyi Wang , Zhongkan Ren , Jiazhu Li , Zhuhui Qiao","doi":"10.1016/j.ceramint.2026.02.039","DOIUrl":"10.1016/j.ceramint.2026.02.039","url":null,"abstract":"<div><div>To address the challenges of high sintering temperature, grain coarsening, and low fracture toughness in traditional B<sub>4</sub>C ceramics, low temperature sintering of B<sub>4</sub>C-YAS ceramics was achieved at 1700 °C using SPS technology in this study, with Y<sub>2</sub>O<sub>3</sub>-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> (YAS) as an effective sintering aid. The effects of YAS composition (Y<sub>2</sub>O<sub>3</sub> content) and sintering temperature on the densification behavior, phase composition, microstructure, and mechanical properties of the ceramics were systematically investigated. The results demonstrate that with a sintering aid composition of 8 wt% Y<sub>2</sub>O<sub>3</sub>, 5.675 wt% Al<sub>2</sub>O<sub>3</sub>, and 11.325 wt% SiO<sub>2</sub>, effective sintering of B<sub>4</sub>C-YAS ceramics occurs when the temperature reaches 1700 °C, at which point the YAS forms a quasi-continuous network phase, enabling enhanced densification through liquid-phase sintering. XRD and microstructural analyses revealed the formation of an amorphous YAS phase in the material, along with the in-situ formation of SiC phases. The B<sub>4</sub>C-YAS ceramics primarily fracture in a transgranular mode, exhibiting rough fracture surfaces along with observed crack deflection. The Vickers hardness, flexural strength, and fracture toughness of B<sub>4</sub>C-YAS ceramics sintered at 1700 °C can reach 20.13 GPa, 280.10 MPa, and 3.64 MPa m<sup>1/2</sup>, respectively. This work demonstrates that the YAS system is a promising sintering aid for low-temperature fabrication of high-performance B<sub>4</sub>C ceramics, providing a feasible pathway towards energy-efficient production.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 10","pages":"Pages 13996-14004"},"PeriodicalIF":5.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636764","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 and properties of an innovative 3D-printed porous carbon nanotube/fly ash–slag–based geopolymer composite and its crystallization 新型3d打印多孔碳纳米管/粉煤灰-矿渣基地聚合物复合材料的制备、性能及结晶

IF 5.6 2区材料科学

Ceramics International Pub Date : 2026-04-01 Epub Date: 2026-02-04 DOI: 10.1016/j.ceramint.2026.02.047

Shu Yan , Shengwei Wang , Daxue Fu , Xuexin Gai , Xupeng Zhai

{"title":"Preparation and properties of an innovative 3D-printed porous carbon nanotube/fly ash–slag–based geopolymer composite and its crystallization","authors":"Shu Yan , Shengwei Wang , Daxue Fu , Xuexin Gai , Xupeng Zhai","doi":"10.1016/j.ceramint.2026.02.047","DOIUrl":"10.1016/j.ceramint.2026.02.047","url":null,"abstract":"<div><div>In this study, an ‌innovative approach to the 3D printing of porous carbon nanotube/fly ash–slag-based geopolymer (CNT/FSG) composite and its crystallization behavior was proposed. The effects of rheological properties, the printing process and high-temperature (800–1100 °C) treatment on the microstructural characteristics and properties of the 3D-printed CNT/FSG composites were systematically investigated. The rheological properties and printable performance of the slurry were determined by adjusting sodium carboxymethylcellulose and the CNTs (0–4.5 wt%). Porous CNT/FSG composites were obtained via simultaneous geopolymerization, foaming, and printing processes. The phase composition of the CNT/FSG composites was primarily amorphous, transforming into a CNT/ceramic composite comprising primarily leucite after high-temperature treatment above 900 °C. The crystallization of the ceramic matrix, the effective interface bonding between CNTs and the matrix, and CNT pulling out were responsible for the increase in the flexural strength and subsequent reduction of samples as the temperature increased, subsequently reaching a maximum strength of 51.89 MPa at 1000 °C. The remarkable mechanical properties of the 3D-printed porous CNT/FSG composites offered innovative insights into the production of advanced ceramic composites as well as the recycling of solid waste.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 10","pages":"Pages 14074-14091"},"PeriodicalIF":5.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636771","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

Tailoring microstructure and properties of hafnium-carbon films via carbon content modulation for advanced protective coatings 利用碳含量调节先进防护涂层的铪碳膜的微观结构和性能

IF 5.6 2区材料科学

Ceramics International Pub Date : 2026-04-01 Epub Date: 2026-02-04 DOI: 10.1016/j.ceramint.2026.02.033

Wang Lan , Liu Yan , Qu Lin , Shunuo Bian , Wenqiang Lu

{"title":"Tailoring microstructure and properties of hafnium-carbon films via carbon content modulation for advanced protective coatings","authors":"Wang Lan , Liu Yan , Qu Lin , Shunuo Bian , Wenqiang Lu","doi":"10.1016/j.ceramint.2026.02.033","DOIUrl":"10.1016/j.ceramint.2026.02.033","url":null,"abstract":"<div><div>In this investigation, hafnium-carbon films with varying carbon concentrations were synthesized using radio frequency magnetron sputtering technology. The primary objective was to comprehensively examine the influence of carbon content on the microstructural characteristics and properties of binary hafnium carbide films. With increasing carbon content, the films’ microstructure transitions into a composite state comprising both an amorphous carbon phase and a nanocrystalline phase, accompanied by enhanced film density. Concerning the mechanical properties, both the hardness and elastic modulus initially increase with rising carbon content, reaching maximum values of 29.4 GPa and 318.5 GPa, respectively, before subsequently declining. Notably, after the formation of the amorphous carbon phase, although both properties decrease, the ratios of hardness to elastic modulus (H/E) as well as hardness cubed to elastic modulus squared (H<sup>3</sup>/E<sup>2</sup>) remain relatively high. This confers the high-carbon-content films with superior resistance to crack propagation and strong interfacial bonding. Furthermore, these films exhibit outstanding thermal stability, along with notable oxidation and corrosion resistance. Collectively, these results provide a promising pathway for the design of advanced high-performance coating materials.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 10","pages":"Pages 13916-13925"},"PeriodicalIF":5.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636775","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