Composites Part B: Engineering最新文献_第5页

Difference in initial capacity loss between single-crystal and polycrystalline Ni-rich layered cathodes 单晶和多晶富镍层状阴极初始容量损失的差异

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-04-25 DOI: 10.1016/j.compositesb.2025.112563

Jeongwoo Lee , Seongeun Lee , Minji Kim , Jae-Uk Kim , Minsun Kong , Dae Beom Lee , Won-Sub Yoon

{"title":"Difference in initial capacity loss between single-crystal and polycrystalline Ni-rich layered cathodes","authors":"Jeongwoo Lee , Seongeun Lee , Minji Kim , Jae-Uk Kim , Minsun Kong , Dae Beom Lee , Won-Sub Yoon","doi":"10.1016/j.compositesb.2025.112563","DOIUrl":"10.1016/j.compositesb.2025.112563","url":null,"abstract":"<div><div>Ni-rich layered cathodes are promising candidates for high-energy-density lithium-ion batteries (LIBs). However, they experience substantial initial capacity loss (ICL) of 10–20 % during the first cycle. Single-crystal materials particularly exhibit even greater ICL than polycrystalline materials. This increased ICL poses significant challenges as it directly reduces overall capacity and efficiency. Despite its importance, the pronounced ICL in single-crystal Ni-rich cathodes remains underexplored, as most studies have focused on polycrystalline materials. Here, we elucidate the difference in ICL between single-crystal LiNi<sub>0</sub><sub>·</sub><sub>90</sub>Co<sub>0</sub><sub>·</sub><sub>08</sub>Al<sub>0</sub><sub>·</sub><sub>02</sub>O<sub>2</sub> (S-NCA) and polycrystalline LiNi<sub>0</sub><sub>·</sub><sub>90</sub>Co<sub>0</sub><sub>·</sub><sub>08</sub>Al<sub>0</sub><sub>·</sub><sub>02</sub>O<sub>2</sub> (P-NCA). Electrochemical analyses reveal that S-NCA exhibits lower discharge capacity due to the absence of a kinetic plateau near the 3.5 V region. Furthermore, it presents higher proportions of both recoverable and irrecoverable ICL. X-ray analyses further demonstrate that S-NCA contains more residual lithium compounds and NiO-like rock-salt phases on its surface. It also has longer Li<sup>+</sup> diffusion pathways due to its larger particle size. These features hinder lithium insertion and increase recoverable ICL. Additionally, greater cation mixing in the bulk of S-NCA induces irreversible structural changes, contributing to both irrecoverable and recoverable ICL. This comprehensive understanding of mechanisms underlying the intensified ICL in S-NCA provides valuable insights for designing high-capacity, stable Ni-rich cathodes.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"302 ","pages":"Article 112563"},"PeriodicalIF":12.7,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Evaluation of the mechanical properties of 3D printed Nylon 11-continuous stainless steel fibre reinforced composites 3D打印尼龙11-连续不锈钢纤维增强复合材料力学性能评价

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-04-24 DOI: 10.1016/j.compositesb.2025.112484

Alison Clarke , Hui Zhang , Andrew Dickson , Budi Zhao , Ben L. Jones , Denis P. Dowling

{"title":"Evaluation of the mechanical properties of 3D printed Nylon 11-continuous stainless steel fibre reinforced composites","authors":"Alison Clarke , Hui Zhang , Andrew Dickson , Budi Zhao , Ben L. Jones , Denis P. Dowling","doi":"10.1016/j.compositesb.2025.112484","DOIUrl":"10.1016/j.compositesb.2025.112484","url":null,"abstract":"<div><div>This paper reports for the first time, on the 3D printing of Nylon 11 (PA11) composites reinforced with continuous stainless steel fibre (SSF) bundles. The mechanical properties of the composites were evaluated by short beam shear (SBS) testing to evaluate the interlaminar shear strength (<span><math><mi>τ</mi></math></span>ILSS), along with Charpy impact testing. For both mechanical tests, two print orientations were examined: the flat, loaded perpendicularly to the printed layers, and the on-edge, loaded parallel to the printed layers. The PA11-SSF’s Charpy impact values were up to 83.9 and 73.1 <span><math><mrow><mi>kJ</mi><mo>/</mo><msup><mrow><mi>m</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span> for the on-edge and flat orientation 3D-printed orientations, respectively. The on-edge SBS testing also demonstrated higher <span><math><mi>τ</mi></math></span>ILSS of 24.9 MPa, compared with the 18.25 MPa obtained than the flat orientation. This difference in performance is associated with fibre distribution in the transverse versus the vertical (layer) directions. Thus demonstrating that to maximise the composite’s impact resistance, the continuous fibre orientation (on-edge or flat) needs to be considered in conjunction with the anticipated impact direction during a component design and printing. Studies carried out using an SBS system mounted inside an X-ray computed tomography system, facilitating the monitoring of the steel fibre deformation within the composite during loading. In addition, PA11-SSF composites, comparison mechanical testing was carried out on MEX 3D-printed Nylon 11, Nylon with short carbon fibre, and composites that combine short and continuous carbon.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"303 ","pages":"Article 112484"},"PeriodicalIF":12.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Towards ultrasonic welding of robust thermoplastic composite joints without the use of energy directors 不使用能量剂的热塑性复合材料坚固接头超声焊接研究

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-04-24 DOI: 10.1016/j.compositesb.2025.112561

Xuemin Wang , Dong Quan , Jiaming Liu , Dongsheng Yue , Jiaying Pan , Guoqun Zhao

{"title":"Towards ultrasonic welding of robust thermoplastic composite joints without the use of energy directors","authors":"Xuemin Wang , Dong Quan , Jiaming Liu , Dongsheng Yue , Jiaying Pan , Guoqun Zhao","doi":"10.1016/j.compositesb.2025.112561","DOIUrl":"10.1016/j.compositesb.2025.112561","url":null,"abstract":"<div><div>The development of an advanced ultrasonic welding process for thermoplastic composites (TPCs) without the usage of energy directors (EDs) represents a significant challenge and a highly desirable innovation for aerospace applications. A major obstacle in ED-less ultrasonic welding is the non-uniform heat generation and distribution at the welding interface, leading to inconsistent weld quality. This study addressed this challenge by introducing a novel strategy of co-consolidating an extra resin layer (eRL) onto the CF/PEI surfaces prior to the welding. The results demonstrated that applying eRLs with an optimal thickness on the CF/PEI adherends enhanced heat generation efficiency and ensured sufficient melt flow at the welding interface, while effectively eliminating carbon fibre squeeze-out. This approach significantly improves weld uniformity and mechanical performance, achieving a maximum lap-shear strength of 43.2 MPa. Overall, the incorporation of eRLs offers a promising pathway for the cost-effective, high-quality ultrasonic welding of large-scale and complex TPC structures without the usage of EDs.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"302 ","pages":"Article 112561"},"PeriodicalIF":12.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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-entropy enhanced microwave dielectric performance 高熵增强微波介电性能

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-04-23 DOI: 10.1016/j.compositesb.2025.112545

Linzhao Ma, Jianhong Duan, Longxiang Jiang, Qianbiao Du, Kun Wei, Tian Liu, Hao Li

{"title":"High-entropy enhanced microwave dielectric performance","authors":"Linzhao Ma, Jianhong Duan, Longxiang Jiang, Qianbiao Du, Kun Wei, Tian Liu, Hao Li","doi":"10.1016/j.compositesb.2025.112545","DOIUrl":"10.1016/j.compositesb.2025.112545","url":null,"abstract":"<div><div>Microwave dielectric ceramics with excellent dielectric properties are essential for microwave devices. However, developing microwave dielectric ceramics with optimal permittivity (<em>ε</em><sub><em>r</em></sub>), a high quality factor (<em>Q×f</em>), and a near-zero temperature coefficient of resonant frequency (<em>τ</em><sub><em>f</em></sub>) remains a significant challenge. We propose a high-entropy design with local disordered ionic displacement in spinel-structural ceramics. This strategy stabilizes the phase structure by lowering the Gibbs free energy and enhances the performance of ceramics through lattice distortion, sluggish diffusion kinetics, and multi-component synergy. Benefiting from the synergistic effect, we achieved excellent properties in high-entropy spinel ceramics, including a <em>ε</em><sub><em>r</em></sub> of 10.33, a high <em>Q×f</em> of 120,545 GHz, a near-zero <em>τ</em><sub><em>f</em></sub> of −10.7 ppm/°C, as well as a Vickers hardness of 9.98 GPa and a flexural strength of 134.1 MPa. Furthermore, the resonant antenna designed based on high-entropy ceramics satisfies the application requirements for 5G/6G communications. This work demonstrates that the high-entropy strategy is an advanced method for the development of high-performance microwave dielectric ceramics and antennas.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"303 ","pages":"Article 112545"},"PeriodicalIF":12.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Toward sustainable magnesium phosphate cement: Deciphering the dissolution and reaction mechanisms of magnesium hydroxide in acid phosphate systems 走向可持续的磷酸镁水泥：解读氢氧化镁在酸性磷酸盐体系中的溶解和反应机理

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-04-23 DOI: 10.1016/j.compositesb.2025.112542

Yue Li, Shiru Long, Nan Wang, Hui Lin, Zigeng Wang

{"title":"Toward sustainable magnesium phosphate cement: Deciphering the dissolution and reaction mechanisms of magnesium hydroxide in acid phosphate systems","authors":"Yue Li, Shiru Long, Nan Wang, Hui Lin, Zigeng Wang","doi":"10.1016/j.compositesb.2025.112542","DOIUrl":"10.1016/j.compositesb.2025.112542","url":null,"abstract":"<div><div>Magnesium phosphate cement (MPC) is an inorganic cementitious material formed by the reaction of magnesium raw materials with phosphates, characterized by high early strength and excellent durability. However, conventional MPC relies on dead-burned MgO, which is calcined above 1500 °C, resulting in high carbon emissions (exceeding 1500 kg/t). To reduce the carbon footprint of MPC, the dead-burned MgO was replaced by Mg(OH)<sub>2</sub>, the main component of natural brucite, to prepare low-carbon MPC and the reaction mechanisms of Mg(OH)<sub>2</sub> in ammonium dihydrogen phosphate (ADP) and potassium dihydrogen phosphate (KDP) solutions was investigated. The results indicated that low-carbon MPC exhibited faster setting and solidification than traditional MPC. The contact efficiency of Mg(OH)<sub>2</sub> with ADP solution was significantly higher than with KDP solution, leading to a primarily surface reaction in ADP solution. Compared to the KDP solution, ADP solution exhibited a lower kinetic parameter N and a higher K in the early stage of the reaction, resulting in the rapid formation of reaction products such as MgNH<sub>4</sub>PO<sub>4</sub>·6H<sub>2</sub>O and MgHPO<sub>4</sub>·3H<sub>2</sub>O that coated the Mg(OH)<sub>2</sub> surface and hindered further reaction, leaving substantial residual Mg(OH)<sub>2</sub> and ADP. In contrast, Mg(OH)<sub>2</sub> in KDP solution underwent both surface and solution reactions, where lamellar products, Mg<sub>2</sub>KH(PO<sub>4</sub>)<sub>2</sub>·15H<sub>2</sub>O and MgHPO<sub>4</sub>·7H<sub>2</sub>O, gradually transformed into prismatic MgKPO<sub>4</sub>·6H<sub>2</sub>O as the reaction progressed, leading to near-complete consumption of KDP and a higher reaction extent of Mg(OH)<sub>2</sub> compared to ADP solution. This study provided new insights into the synthesis of low-carbon MPC and established a theoretical foundation for optimizing reaction conditions.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"302 ","pages":"Article 112542"},"PeriodicalIF":12.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Deciphering the solidification mechanisms of multi-scaled TiCN particles tailoring the abnormal grain coarsening during fast cooling 揭示了多尺度TiCN颗粒在快速冷却过程中晶粒异常粗化的凝固机理

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-04-23 DOI: 10.1016/j.compositesb.2025.112546

Qiang Li , Mei-Ling Zhu , Shuo Yu , Feng Qiu , Xing-Ran Li , Peng-Fei Jiang , Bai-Xin Dong , Shi-Li Shu , Zhi-Hui Zhang

{"title":"Deciphering the solidification mechanisms of multi-scaled TiCN particles tailoring the abnormal grain coarsening during fast cooling","authors":"Qiang Li , Mei-Ling Zhu , Shuo Yu , Feng Qiu , Xing-Ran Li , Peng-Fei Jiang , Bai-Xin Dong , Shi-Li Shu , Zhi-Hui Zhang","doi":"10.1016/j.compositesb.2025.112546","DOIUrl":"10.1016/j.compositesb.2025.112546","url":null,"abstract":"<div><div>Well-tuned microstructure often grants a fairly predictable performance. Wherein, fast cooling is a universally acknowledged tuning approach to deliver a fine and equiaxed solidification microstructure. Conversely, abnormal coarsening and equiaxed-to-columnar transition were triggered with increased cooling rates in this work. To tailor this counterintuitive response, we proposed a facile, economical yet sustainable method, i.e., inoculant-aided solidification by self-incorporation of nucleating particles assisted ultrasonic vibration. Micro-scaled, nano-scaled, and hybrid-scaled TiCN particles (TiCN<sub><em>p</em></sub>), i.e., TiCN<sub><em>mp</em></sub>, TiCN<sub><em>np</em></sub>, and TiCN<sub><em>bp</em></sub>, were leveraged to tailor the solidification behaviors under various solidification conditions. Compared with the TiCN<sub><em>mp</em></sub>, both TiCN<sub><em>np</em></sub> and TiCN<sub><em>bp</em></sub> not only manifested far superior resistance to the grain coarsening but conferred more isotropic and equiaxed solidification, which therefore enabled a substantial transition from coarse and directionally oriented columnar to wholly fine and randomly oriented equiaxed grains. Specially, solidification thermodynamics and kinetics behaviors, over a wide range of local temperature fields and inoculating conditions, were thoroughly investigated to uncover the nature of abnormal coarsening at high cooling rates. This work offers promise to deliver a controllable solidification microstructure and hence broaden the application prospects of Al alloys.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"302 ","pages":"Article 112546"},"PeriodicalIF":12.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Synergistic optimization of multifunctionality in composite through continuous manufacturing of honeycomb-structured carbon fiber@ZIF-67 蜂窝结构碳连续制造复合材料多功能性协同优化fiber@ZIF-67

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-04-23 DOI: 10.1016/j.compositesb.2025.112548

Jiaqi Zhou , Xiumei Zhang , Ye Zhang , Jialin Li , Bo Zhu , Xun Cai

{"title":"Synergistic optimization of multifunctionality in composite through continuous manufacturing of honeycomb-structured carbon fiber@ZIF-67","authors":"Jiaqi Zhou , Xiumei Zhang , Ye Zhang , Jialin Li , Bo Zhu , Xun Cai","doi":"10.1016/j.compositesb.2025.112548","DOIUrl":"10.1016/j.compositesb.2025.112548","url":null,"abstract":"<div><div>Carbon fiber reinforced polyether ether ketone (CF/PEEK) composites possess significant potential in the electronic information sector, where high demands for the integration of structural functionality are placed. This requirement endows the composites with not only superior interfacial structural properties but also excellent electromagnetic protection and thermal conductivity (TC). However, achieving synergistic optimization of structure and multifunctionality in composites is challenging. In this study, we fabricated CF@ZIF-67 through continuous manufacturing, leveraging its unique honeycomb structure to penetrate the resin matrix and enhance interfacial performance. The interlaminar shear strength (ILSS) of the CF@ZIF-67-3/PEEK composite reached a remarkable 101.96 MPa. Due to its high electrical conductivity, CF@ZIF-67 is an ideal candidate for constructing an efficient conductive network in electromagnetic protection. It enhances the transport efficiency of electrons and phonons within the matrix, thereby establishing a robust TC network. This enhancement led to a 68.52 % increase in the TC and a 28.39 % improvement in electromagnetic interference (EMI) shielding performance. Moreover, CF@ZIF-67 exhibited remarkable electromagnetic wave (EMW) absorption capabilities, achieving a minimum reflection loss (RL<sub>min</sub>) of −69.40 dB and an effective absorption bandwidth (EAB) of 4.88 GHz. The approach of creating interfacial/thermal/electrical pathways presents a highly potential direction for the advancement of high-performance multifunctional materials in electronic applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"302 ","pages":"Article 112548"},"PeriodicalIF":12.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Physically constrained 3D diffusion for inverse design of fiber-reinforced polymer composite materials 基于物理约束的三维扩散纤维增强聚合物复合材料逆向设计

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-04-23 DOI: 10.1016/j.compositesb.2025.112515

Pei Xu , Yunpeng Wu , Alireza Zarei , Shahriar Ahmed , Srikanth Pilla , Gang Li , Feng Luo

{"title":"Physically constrained 3D diffusion for inverse design of fiber-reinforced polymer composite materials","authors":"Pei Xu , Yunpeng Wu , Alireza Zarei , Shahriar Ahmed , Srikanth Pilla , Gang Li , Feng Luo","doi":"10.1016/j.compositesb.2025.112515","DOIUrl":"10.1016/j.compositesb.2025.112515","url":null,"abstract":"<div><div>Designing fiber-reinforced polymer composites (FRPCs) with a tailored nonlinear stress-strain response is crucial for applications such as energy absorption in crash structures, flexible robotics, and impact-resistant protective gear. However, the inherent complexities of composite materials and the multitude of parameters involved, render traditional design and optimization methods inadequate for achieving effective inverse design of composites. In this paper, we present an AI-based inverse design framework that effectively and efficiently generates FRPCs with targeted nonlinear stress-strain responses. We introduce a physically constrained diffusion model (PC3D_Diffusion) capable of managing the complexities of composite materials and producing detailed, high-quality designs. We propose a loss-guided, learning-free approach to generate physically feasible microstructure designs by explicitly enforcing physical constraints during the generation process. For training purposes, 1.35 million FRPC samples were created, and their corresponding stress-strain curves were computed using established physics-based computational models. The results show that PC3D_Diffusion consistently generates high-quality designs with tailored mechanical behaviors, while guaranteeing compliance with the physical constraints. PC3D_Diffusion advances FRPC inverse design and may facilitate the inverse design of other 3D materials, offering potential applications in industries reliant on materials with custom mechanical properties.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"303 ","pages":"Article 112515"},"PeriodicalIF":12.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 oxidation/ablation differences of multi-phase carbide ceramics evaluated by atomic simulations and performance data validation 通过原子模拟和性能数据验证，评价了多相碳化物陶瓷的氧化/烧蚀差异

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-04-23 DOI: 10.1016/j.compositesb.2025.112552

Jiachen Li , Fanyu Lu , Yanqin Fu , Tao Li , Yi Cao , Xue Li , Junshuai Lv , Yulei Zhang

{"title":"The oxidation/ablation differences of multi-phase carbide ceramics evaluated by atomic simulations and performance data validation","authors":"Jiachen Li , Fanyu Lu , Yanqin Fu , Tao Li , Yi Cao , Xue Li , Junshuai Lv , Yulei Zhang","doi":"10.1016/j.compositesb.2025.112552","DOIUrl":"10.1016/j.compositesb.2025.112552","url":null,"abstract":"<div><div>Composition design of ultra-high temperature ceramic (UHTC)-coated carbon/carbon composites gradually becomes a critical issue for aerospace applications, particularly for hot-end components exposed to severe thermal environments exceeding 2000 °C, where high-temperature oxidation and mechanical denudation prevail. This study combined atomic simulations and experimental validation to investigate the oxidation behavior of multi-phase carbides (HfC, ZrC, TaC and TiC), as well as multicomponent oxidation products’ solid solution behavior and ablation mechanism (Ta/Ti-doped (Hf, Zr)O<sub>2</sub>). The simulations displayed a higher oxidation sensitivity of Ta-doped (Hf, Zr)O<sub>2</sub> (HfC-ZrC-TaC), due to higher O-migration of 2.52 Å at 25 °C and 5.86 Å at 2000 °C than those of 2.39 Å at 25 °C and 5.02 Å at 2000 °C for Ti-doped (Hf, Zr)O<sub>2</sub> (HfC-ZrC-TiC). The thermogravimetric static oxidation and ablation tests demonstrated the inferior oxidation resistance of HfC-ZrC-TaC. It had a smaller onset oxidation temperature (440 °C) than HfC-ZrC-TiC (475 °C). Additionally, HfC-ZrC-TaC coating failed after 120 s with linear and mass ablation rates of 0.565 μm/s and 2.653 mg/s, respectively, while the HfC-ZrC-TiC coating expired after 180 s with 0.321 μm/s and 1.262 mg/s. These findings provided valuable insights into the inverse compositional optimization for UHTC systems including multi-phase monocarbides and medium-/high-entropy carbides, thus expanding the design space for advanced high-temperature structural materials.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"302 ","pages":"Article 112552"},"PeriodicalIF":12.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Multi-scale thermal runaway analysis of sodium-ion batteries and comparative safety assessment with lithium-ion batteries 钠离子电池多尺度热失控分析及与锂离子电池的安全性比较评价

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-04-22 DOI: 10.1016/j.compositesb.2025.112532

Ping Ping , Xiantong Ren , Depeng Kong , Wei Gao , Yue Zhang , Can Yang , Gongquan Wang , Zhenkai Feng , Jiaxin Guo , Jinyong Ren

{"title":"Multi-scale thermal runaway analysis of sodium-ion batteries and comparative safety assessment with lithium-ion batteries","authors":"Ping Ping , Xiantong Ren , Depeng Kong , Wei Gao , Yue Zhang , Can Yang , Gongquan Wang , Zhenkai Feng , Jiaxin Guo , Jinyong Ren","doi":"10.1016/j.compositesb.2025.112532","DOIUrl":"10.1016/j.compositesb.2025.112532","url":null,"abstract":"<div><div>As a burgeoning alternative to traditional energy storage, sodium-ion batteries (SIBs) offer distinct advantages for large-scale energy storage due to their cost-effectiveness. However, knowledge gaps of the safety of SIBs still remain. This paper addresses these gaps by providing a comprehensive analysis of the thermal and explosion hazards of SIBs with Na<sub>x</sub>NiFeMnO<sub>2</sub> (NFM) cathodes, compared with similar capacity lithium-ion batteries (LIBs), LiFePO<sub>4</sub> (LFP) and LiNi<sub>x</sub>Co<sub>y</sub>Mn<sub>1-x-y</sub>O<sub>2</sub> (NCM) batteries, using an accelerated calorimeter. Additionally, differential scanning calorimetry is employed to probe the heat sources in the thermal runaway (TR) processes of SIBs. Results indicate that the self-heating temperature and TR occurrence temperature of the NFM cell are 55.02 °C and 215.81 °C, respectively, with a mass loss ratio is close to that of NCM cell, posing a high explosion severity. Gas chromatography revealed similar gas compositions to LIBs, with a notable CH<sub>4</sub> concentration. The lower and upper explosive limits for NFM cells are calculated to be 5.18 % and 30.48 %, respectively. The explosion limit range for NFM cells falls between those of NCM and LFP cells. Eight key parameters corresponding to the likelihood and severity of the thermal and explosive hazards are considered, to establish multiscale safety assessment. The overall risk of TR can be ranked as: NCM > NFM > LFP cells. However, the NFM cells showed lower tolerance to side reactions and slightly lower explosive hazards compared to NCM cells. This study provides guidance for designing high-safety SIBs and offers a novel safety assessment framework for secondary batteries.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"302 ","pages":"Article 112532"},"PeriodicalIF":12.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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