Yun Fan, Yuelei Bai, Xiaodong He, Dong Chen, Zhaoxu Sun, Zhiyao Lu, Yuchen Liu, Bin Liu
{"title":"Revealing corrosion mechanisms and enabling predictive lifetime assessment of high-entropy rare-earth disilicates with superior CMAS corrosion resistance","authors":"Yun Fan, Yuelei Bai, Xiaodong He, Dong Chen, Zhaoxu Sun, Zhiyao Lu, Yuchen Liu, Bin Liu","doi":"10.26599/jac.2026.9221251","DOIUrl":"https://doi.org/10.26599/jac.2026.9221251","url":null,"abstract":"High-entropy rare earth disilicates are promising next-generation thermal/environmental barrier coating (T/EBC) materials. However, their resistance to calcium–magnesium–aluminosilicate (CMAS) corrosion and the underlying mechanisms remain insufficiently understood and require further improvement<strong>. </strong>This study aims to systematically investigate the CMAS corrosion behavior and predictive lifetime assessment of designed stoichiometric (Er<sub>1/4</sub>Y<sub>1/4</sub>Lu<sub>1/4</sub>Yb<sub>1/4</sub>)<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> and non-stoichiometric (Er<sub>1/6</sub>Tm<sub>1/6</sub>Y<sub>1/15</sub>Gd<sub>1/15</sub>Lu<sub>4/15</sub>Yb<sub>4/15</sub>)<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>. The incorporation of Tm and Gd, characterized by their distinct ionic radii, is designed to enhance its phase stability. Mechanistic analysis reveals that lattice distortion induced by multi-cation doping suppresses CMAS infiltration, while the introduction of larger-radius RE<sup>3+</sup> ions promotes Ca<sup>2+</sup> depletion in the CMAS melt, reducing its corrosive activity. A temperature-dependent transition in corrosion mechanisms is also elucidated. A thermodynamic-kinetic competition dominates at 1300 °C, whereas a dissolution-reprecipitation mechanism prevails at 1500 °C due to accelerated ion diffusion. Furthermore, an innovative Extended Kalman Filter (EKF) model is developed, enabling highly accurate prediction of long-term corrosion depth and rate at 1300 °C, with an error of less than 3%.<strong> </strong>Experimental results demonstrate that both materials exhibit exceptional CMAS corrosion resistance, reducing corrosion depth by approximately 70% compared to single-component RE<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>. This work does not only clarify the corrosion mechanisms and compositional design principles of high-entropy rare earth disilicates but also provides a novel methodology for predictive lifetime assessment, advancing the development of next-generation T/EBC systems.","PeriodicalId":502524,"journal":{"name":"Journal of Advanced Ceramics","volume":"15 3","pages":"9221251-9221251"},"PeriodicalIF":0.0,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciopen.com/local/article_pdf/10.26599/JAC.2026.9221251.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147919681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yi Xu, Guoping Wang, Bingbing Yang, Yitong Li, Le Chen, Ruibin Wang, Hongqing Wang, Linghua Jin
{"title":"La-doped Bi <sub>4</sub> Ti <sub>3</sub> O <sub>12</sub> nanosheets: Ferroelectric polarization-enhanced carrier dynamics for efficient tetracycline photodegradation","authors":"Yi Xu, Guoping Wang, Bingbing Yang, Yitong Li, Le Chen, Ruibin Wang, Hongqing Wang, Linghua Jin","doi":"10.26599/jac.2026.9221248","DOIUrl":"https://doi.org/10.26599/jac.2026.9221248","url":null,"abstract":"The development of high-performance photocatalysts is crucial for the efficient photodegradation of antibiotics. A key challenge in photocatalysis is charge recombination, which occurs both within the bulk and at the surface of semiconductor catalysts. In this study, charge recombination was suppressed by enhancing carrier dynamics through ferroelectric polarization in Bi<sub>4</sub>Ti<sub>3</sub>O<sub>12</sub> (BTO)-based materials, leading to a significant improvement in tetracycline (TC) degradation performance. Our results demonstrate that La doping strengthens ferroelectric polarization, improving charge carrier dynamics and emphasizing the critical role of polarization in photocatalysis. Differences in polarization led to varying effects on charge carrier dynamics, which directly influenced the photocatalytic degradation of TC. La doped BTO (La-BTO) exhibited the highest photocurrent density, the lowest charge transfer resistance, and a reduced photoluminescence (PL) lifetime compared to both pristine and depolarized BTO. Photocatalytic tests revealed that La-BTO achieved nearly complete TC degradation within 30 min under light irradiation, with •O<sub>2</sub><sup>−</sup> and •OH radicals identified as the primary oxidative species. Specifically, La-BTO achieved a 94.6% degradation rate, which is significantly higher than that of undoped BTO (70.7%), and depolarized BTO (40.7%). These findings demonstrate that polarization-driven carrier dynamics are crucial to optimizing photocatalytic antibiotic degradation, offering new insights into the rational design of high-performance photocatalysts for water purification. ","PeriodicalId":502524,"journal":{"name":"Journal of Advanced Ceramics","volume":"15 3","pages":"9221248-9221248"},"PeriodicalIF":0.0,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciopen.com/local/article_pdf/10.26599/JAC.2026.9221248.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High-strength anisotropic ZrC/YSZ composite foams achieved by <i>in situ</i> carbothermal reduction of ice-templated YSZ foams","authors":"Xiaohui Fan, Qianyu Yao, Na Ni, Xin Wang, Kolan Madhav Reddy, Fangwei Guo, Xiaofeng Zhao","doi":"10.26599/jac.2026.9221247","DOIUrl":"https://doi.org/10.26599/jac.2026.9221247","url":null,"abstract":"Achieving high strength in porous Zirconium Carbide (ZrC) based ceramics is notoriously challenging, primarily due to their high inherent porosity. Here, we present a creative, in-situ synthesis strategy that utilizes anisotropic 3 mol% yttria stabilized zirconia (YSZ) ice-templated foam as a reactive template. This novel approach yields a ZrC/YSZ composite foam with high average axial compressive strength of 61.5 MPa at a porosity of ~70.9% at room temperature. The product ZrC phase nucleates and grows for the first time within dense YSZ struts, not just on the surface. This unique reaction is intimately linked to the redistribution of Y³⁺ ions and the consequent tetragonal (<strong><em>t</em></strong>) to cubic (<strong><em>c</em></strong>) phase transformation in YSZ matrix. Phase transformation in the matrix is a critical internal lever governing the mechanical properties, in some cases exceeding the influence of geometric factors. This research not only offers a new route to fabricate high-strength ultra high temperature ceramic composite foams but also unveils the intricate interplay between their internal reaction chemistry and macroscopic mechanical strength.","PeriodicalId":502524,"journal":{"name":"Journal of Advanced Ceramics","volume":"15 3","pages":"9221247-9221247"},"PeriodicalIF":0.0,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciopen.com/local/article_pdf/10.26599/JAC.2026.9221247.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147881180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yang Xia, Ming-Xuan Wu, Jun-Tong Huang, Huang Luo, Dong-Hai Ding, Jie Yin, Chang-Ming Xu, Huiyong Yang, Qi-Fa Wan, L. Z. Wang, Bing-Liang Liang, Zi-Cui Lu, Rui-Ying Luo
{"title":"Facilitating structural strengthening and electromagnetic wave absorption functionalization of dual-phase SiC ceramics via MBNS-dominated multiphase reinforcement strategy","authors":"Yang Xia, Ming-Xuan Wu, Jun-Tong Huang, Huang Luo, Dong-Hai Ding, Jie Yin, Chang-Ming Xu, Huiyong Yang, Qi-Fa Wan, L. Z. Wang, Bing-Liang Liang, Zi-Cui Lu, Rui-Ying Luo","doi":"10.26599/jac.2025.9221234","DOIUrl":"https://doi.org/10.26599/jac.2025.9221234","url":null,"abstract":"Multilayer Boron nitride nanosheets (BNNS) are promising two-dimensional structure-function enhancers due to their structural and mechanical similarity to multilayer graphene (MLG). However, challenges in scalable synthesis/preparation techniques and effective interfacial integration approaches of BNNS have limited their application in ceramic-matrix composites. Herein, we reported the cost-effective, large-scale production of high-quality MBNS via three-roll milling, and their incorporation into a dual-phase SiC matrix through a tailored interfacial modification strategy. This MBNS-dominated microstructures activated multiple synergistical toughening mechanisms, yielding a ~95% increase in flexural strength and ~50% enhancement in fracture toughness. Additionally, the composite exhibited excellent electromagnetic absorption performance, achieving a minimum reflection loss (RL<sub>min</sub>) of −52.59 dB at 1.22 mm and a maximum effective absorption bandwidth (EAB<sub>max</sub>) of full Ku-band coverage (5.6 GHz) at 1.09 mm thickness. This work presents a scalable strategy for the fabrication of high-performance, structurally and functionally integrated composites, offering significant potential for advanced structural and electromagnetic applications.","PeriodicalId":502524,"journal":{"name":"Journal of Advanced Ceramics","volume":"15 2","pages":"9221234-9221234"},"PeriodicalIF":0.0,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciopen.com/local/article_pdf/10.26599/JAC.2025.9221234.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haoran Zou, Wen Zhang, Fangze Chen, Chao Zhang, Jinyong Zhang, Lin Ren, Weimin Wang, Fan Zhang, Zhengyi Fu
{"title":"Hydrothermal synthesis of MoSe <sub>2</sub> /Ni <sub>3</sub> Se <sub>4</sub> heterostructures anchored on high-entropy M <sub>4</sub> C <sub>3</sub> T <sub> <i>x</i> </sub> (M = Ti, V, Mo, Nb, Ta) with superior hydrogen evolution reaction activity","authors":"Haoran Zou, Wen Zhang, Fangze Chen, Chao Zhang, Jinyong Zhang, Lin Ren, Weimin Wang, Fan Zhang, Zhengyi Fu","doi":"10.26599/jac.2025.9221235","DOIUrl":"https://doi.org/10.26599/jac.2025.9221235","url":null,"abstract":"Developing HER electrocatalysts with high activity in both acidic and alkaline media is of great significance for adapting to diverse electrolytic environments. In this study, MoSe<sub>2</sub> and Ni<sub>3</sub>Se<sub>4</sub> nanosheets were successfully composited on high-entropy M<sub>4</sub>C<sub>3</sub>T<em><sub>x</sub></em> MXene (M = Ti, V, Mo, Nb, Ta) via a hydrothermal method, constructing a novel heterostructured catalyst. This design leverages the excellent conductivity and multi-element synergistic effect of high-entropy MXene, which not only facilitates electron transport but provides a robust platform for the uniform distribution of MoSe<sub>2</sub> and Ni<sub>3</sub>Se<sub>4</sub> nanosheets, thereby exposing abundant active sites. Electrochemical tests indicate that the catalyst exhibits excellent HER performance in both 0.5 M H<sub>2</sub>SO<sub>4</sub> and 1.0 M KOH electrolytes. Specifically, under acidic conditions, MoSe<sub>2</sub>/Ni<sub>3</sub>Se<sub>4</sub>/M<sub>4</sub>C<sub>3</sub>T<em><sub>x</sub></em> shows an overpotential of only 67 mV at a current density of 10 mA·cm⁻<sup>2</sup> with a Tafel slope of 68.7 mV·dec⁻<sup>1</sup>; while under alkaline conditions, the overpotential at 10 mA·cm⁻<sup>2</sup> is 73 mV with a Tafel slope of 77.8 mV·dec⁻<sup>1</sup>. Moreover, the catalyst demonstrates excellent long-term stability in both acidic and alkaline media. This work provides a new strategy for designing efficient and stable HER catalysts suitable for harsh acid–base environments.","PeriodicalId":502524,"journal":{"name":"Journal of Advanced Ceramics","volume":"15 2","pages":"9221235-9221235"},"PeriodicalIF":0.0,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciopen.com/local/article_pdf/10.26599/JAC.2025.9221235.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147895009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"CuO-decorated bismuth subcarbonate p–n heterostructured micro-flowers for high-selectivity VOC gas sensor arrays and cooked rice quality assessment","authors":"Zichen Zheng, Kewei Liu, Yiwen Zhou, Kaichun Xu, Changlong Wang, Marc Debliquy, Carla Bittencourt, Chao Zhang","doi":"10.26599/jac.2025.9221233","DOIUrl":"https://doi.org/10.26599/jac.2025.9221233","url":null,"abstract":"A gas sensor system with high sensitivity and excellent selectivity is essential for accurately evaluating the quality of cooked rice and optimizing agricultural storage conditions in real time. Detecting large molecular volatile organic compounds (VOCs) emitted from cooked rice presents several challenges, including low volatility, interference from complex sample matrices, and limited selectivity. In this study, we propose using CuO/Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> (Cu–BC) p–n heterostructure micro-flowers as a substrate to create a four-channel gas sensor array that converts voltage to resistance. The individual Cu<i>x</i>–BC sensors (<i>x</i> = 10, 20, 30, and 40) exhibit a strong response to nonanal, benzaldehyde, and 1-octen-3-ol at room temperature (25±2 °C), with detection specificity confirmed through principal component analysis (PCA). This integrated gas sensor array effectively identifies and distinguishes the quality of cooked rice, including both freshly prepared rice and rice stored for one to six weeks. The sensing mechanism relies on increased oxygen vacancies and improved electron mobility. Additionally, we explore the adsorption and diffusion mechanisms of the target gas molecules and oxygen on the surface of the materials using molecular dynamics (MD) simulations. Overall, the gas sensor array demonstrates significant potential in accurately assessing the quality of agricultural products at different storage stages.","PeriodicalId":502524,"journal":{"name":"Journal of Advanced Ceramics","volume":"15 2","pages":"9221233-9221233"},"PeriodicalIF":0.0,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciopen.com/local/article_pdf/10.26599/JAC.2025.9221233.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147892257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yang Hu, Jun Lu, Dewei Ni, Bowen Chen, Feiyan Cai, Yanmei Kan, Yusheng Ding, Shaoming Dong
{"title":"Bioinspired Bouligand structure for the synergistic enhancement of mechanical and thermal properties in 3D-printed C <sub>sf</sub> /ZrB <sub>2</sub> -SiC composites","authors":"Yang Hu, Jun Lu, Dewei Ni, Bowen Chen, Feiyan Cai, Yanmei Kan, Yusheng Ding, Shaoming Dong","doi":"10.26599/jac.2025.9221232","DOIUrl":"https://doi.org/10.26599/jac.2025.9221232","url":null,"abstract":"Short carbon fiber reinforced Ultra-high temperature ceramic matrix composites (C<sub>sf</sub>/UHTCMCs) are recognized as leading candidates for thermal structures owing to their precisely tailorable composition and enhanced tunability in structure and properties. Inspired by nature, the Bouligand structure - characterized by a gradual angular rotation between successive layers - exhibits remarkable load-bearing and thermal conductive capacity. In this study, the Bouligand structure was introduced into C<sub>sf</sub>/ZrB<sub>2</sub>-SiC by employing direct ink writing technology. Results indicate that composite with a 30° inter-layer Bouligand structure achieves a synergistic improvement in both mechanical performance and thermal diffusion uniformity. Specifically, enhancements of 42% in flexural strength and 35% in fracture toughness were achieved compared to the conventional C<sub>sf</sub>/ZrB<sub>2</sub>-SiC. Meanwhile, the Z-axis thermal conductivity increased by 24.5%, along with a notable enhancement of in-plane thermal diffusion. These improvements can be attributed to the smaller deflection angles and more frequent unidirectional deflections within the 30° Bouligand structure, which promote more pronounced crack deflection. Furthermore, the small-angle rotational design improves in-plane thermal diffusion uniformity by leveraging the high intrinsic radial thermal conductivity of the short carbon fibers. Hence, the bioinspired Bouligand structure design offers a promising strategy for the synergistic optimization of mechanical and thermal properties in C<sub>sf</sub>/UHTCMCs.","PeriodicalId":502524,"journal":{"name":"Journal of Advanced Ceramics","volume":"15 2","pages":"9221232-9221232"},"PeriodicalIF":0.0,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciopen.com/local/article_pdf/10.26599/JAC.2025.9221232.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147900236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xia Feng, Yixiang Lu, Fanqi Meng, Yi Hou, Xiaodong Feng, Haikui Zhu, Lixi Wang
{"title":"Defect-engineering-driven synergistic modulation of dual-phase (Fe <sub>0.5</sub> Mg <sub>0.5</sub> CoNiCuMn) <sub>3</sub> O <sub>4</sub> @CuO ceramics for superior microwave absorption","authors":"Xia Feng, Yixiang Lu, Fanqi Meng, Yi Hou, Xiaodong Feng, Haikui Zhu, Lixi Wang","doi":"10.26599/jac.2025.9221229","DOIUrl":"https://doi.org/10.26599/jac.2025.9221229","url":null,"abstract":"To overcome the challenge of insufficient loss strength in single-phase high-entropy ferrites, this work develops a novel defect-engineering-driven dual-phase strategy to fabricate spinel/rock-salt structured (Fe₀.₅Mg₀.₅CoNiCuMn)₃O₄@CuO composite ceramics. Combined experimental characterization and first-principles calculations demonstrate a strong positive correlation between defect concentration and microwave absorption performance. The optimized material achieves outstanding electromagnetic absorption with a minimum reflection loss of -48 dB and an effective absorption bandwidth of 3.9 GHz in the X-band. Remarkably, this work obtains 70% bandwidth retention after 1200 °C oxidation and a thermal conductivity of 2.154 W·m⁻¹·K⁻¹, demonstrating exceptional high-temperature stability and thermal management capability. This study pioneers a new pathway for the development of oxidation resistance and electromagnetic protection materials through defect-engineering-driven synergistic modulation.","PeriodicalId":502524,"journal":{"name":"Journal of Advanced Ceramics","volume":"15 2","pages":"9221229-9221229"},"PeriodicalIF":0.0,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciopen.com/article_pdf/10.26599/JAC.2025.9221229.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147899633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A mortise–tenon joint inspired interface structure design for synergistically enhancing the mechanical properties and thermal shock resistance of Cf/(HfNbTaTiZr)C–SiC composites","authors":"Tianzhan Shen, Cuiyan Li, Haibo Ouyang, Mengyao He, Sirui Wu, Leer Bao, Qiaoqiao Wang, Yulei Zhang, Jian Wei","doi":"10.26599/jac.2025.9221227","DOIUrl":"https://doi.org/10.26599/jac.2025.9221227","url":null,"abstract":"Carbon fiber-reinforced high-entropy carbide ceramics (Cf/HECs) are considered promising candidates for ultrahigh-temperature structural applications. The fiber–matrix interface plays a crucial role in determining the overall performance of these materials. This study proposes a novel interface design strategy inspired by the traditional Chinese mortise–tenon joint. In this design, microscale carbon spheres are deposited on the surface of carbon fibers to function as the “tenon”, while the matrix serves as the corresponding “mortise”. Furthermore, a TiC interfacial layer is introduced to improve the interfacial bonding through atomic diffusion. Owing to this distinctive interface structure, the resulting Cf/(TiZrHfNbTa)C–SiC composite exhibits excellent mechanical properties, with a flexural strength of 1053.33 MPa and a fracture toughness of 9.77 MPa·m1/2. Additionally, the composite demonstrates remarkable thermal shock resistance, with a critical thermal shock temperature difference (ΔTc) of 802 °C. It also displays superior ablation resistance, characterized by a linear ablation rate of 3.27 μm·s−1 and a mass ablation rate of 0.05 mg·s−1.","PeriodicalId":502524,"journal":{"name":"Journal of Advanced Ceramics","volume":"15 2","pages":"9221227-9221227"},"PeriodicalIF":0.0,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147912691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ziyu Liu, Zhaofan He, Huimin Liu, Qian Wang, Jin Liang, Zhen Yu, Ruizhe Xing, Jie Kong
{"title":"Hierarchical SiBCNFe composite ceramics enabling broadband electromagnetic wave absorption and corrosion resistance","authors":"Ziyu Liu, Zhaofan He, Huimin Liu, Qian Wang, Jin Liang, Zhen Yu, Ruizhe Xing, Jie Kong","doi":"10.26599/jac.2025.9221213","DOIUrl":"https://doi.org/10.26599/jac.2025.9221213","url":null,"abstract":"Electromagnetic wave (EMW) absorbers with broadband attenuation and long-term stability are important for applications in marine environments. Dielectric ceramics excel in thermal and chemical resistance but offer limited impedance matching, whereas magnetic materials provide strong absorption yet degrade rapidly due to corrosion. Herein, we present an engineering approach for polymer-derived ceramics that utilizes ferric crosslinking to integrate both magnetic functionality and hierarchical structure within a single system. By reacting iron (III) acetylacetonate with Si-H groups in polyborosilazane, the uniformly distributed ferric polymer network is formed. Subsequent pyrolysis drives carbon nanotube growth and Fe<sub>x</sub>Si<sub>y</sub> phase formation, yielding a distinctive hierarchical “mushroom-like” structure composed of SiBCN matrices, carbon nanotube stems, and carbon-encapsulated Fe<sub>x</sub>Si<sub>y</sub> caps. This structure promotes EMW absorption via magneto-dielectric synergy, rich interfaces, and multiple scattering, while carbon-encapsulated Fe<sub>x</sub>Si<sub>y</sub> in the SiBCN matrix provides corrosion resistance. The effective absorption bandwidth (EAB, defined as reflection loss less than -10 dB) of h-SiBCNFe reaches up to 8.16 GHz, while also exhibits a corrosion potential (<em>E</em><sub>corr</sub>) of 0.033 V and an ultralow corrosion current (<em>I</em><sub>corr</sub>) of 0.63 μA·cm<sup>-2</sup>. These features highlight a new design strategy for developing advanced EMW absorbers tailored for marine applications.","PeriodicalId":502524,"journal":{"name":"Journal of Advanced Ceramics","volume":"14 12","pages":"9221213-9221213"},"PeriodicalIF":0.0,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciopen.com/article_pdf/1989301573705584642.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147890025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}