检索结果-内蒙古大学图书馆

SSRN 2025年

作者： Luo, Xuan Li, Yuhao Yang, Chao Zhao, Chao Ma, Hongwei Song, Tao Sun, Minghan Liu, Xiaotao Li, Dongdong Li, Ning State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan430074 China National Engineering Research Center of Near-net-shape Forming for Metallic Materials Guangdong Provincial Key Laboratory for Processing Forming of Advanced Metallic Materials South China University of Technology Guangzhou510640 China Ningbo University China School of Materials Science and Engineering

The systematic evaluation of corrosion resistance and wear behavior represents a critical imperative for advancing biomedical titanium alloys in implant applications. This study systematically examines the corrosion-wear characteristics of laser powder bed fusion (LPBF)-fabricated β-type Ti-34.5Nb-6.9Zr-4.9Ta-1.4Si (TNZTS) alloy after post heat treatment, comparing with LPBF-processed Ti-35Nb-7Zr-5Ta (TNZT) and Ti-6Al-4V counterparts. Electrochemical analysis reveals the TNZTS system's excellent corrosion resistance, stemming primarily from reduced porosity and stabilized passivation film formation. The incorporation of Si effectively addressed the inherent limitation of TNZT alloy in forming defective passivation films under high-potential conditions, thereby enhancing their corrosion resistance. In addition, the TNZTS alloy with hard S2 phase also showed a significant improvement in wear resistance, as manifested by shallower and narrower wear tracks and a lower specific wear rate. This study provides foundational insights into the novel β-type Ti-Nb-Zr-Ta-Si alloy with excellent corrosion resistance and wear properties, positioning it as a promising candidate for load-bearing orthopedic implant applications. © 2025, The Authors. All rights reserved.

关键词： Passivation

来源：评论

学校读者我要写书评

暂无评论

Interaction of the Initial β-Mg17Al12 Phase with α-Matrix Grains in the AZ91 Magnesium Alloy During Hot Extrusion

SSRN

引用

SSRN 2025年

作者： Zhao, Dijia Shao, Yuman Lü, Shulin Yan, Zhaoxiang Guo, Wenbo Li, Shilong Li, Jianyu Xu, Shiwei Wu, Shusen Nie, Jianfeng State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University Changsha410082 China Department of Materials Science and Engineering Monash University VIC3800 Australia

Secondary phase particles in magnesium alloys can facilitate particle-stimulated nucleation and pinning the grain boundary migration during the dynamic recrystallization (DRX) process. But a conflict exists between these two effects. By optimizing the hot extrusion process and preserving the irregular island-shaped β-Mg17Al12 phase (β-phase) derived from the eutectic reaction in the AZ91 magnesium alloy billet, we revealed the interaction of the initial β-phase with the α-matrix during extrusion. In the early stages of extrusion, the irregular, island-shaped, coarse β-phase causes significant dislocation accumulation in the adjacent α-matrix due to the hardness difference. As dislocations accumulate, the β-phase fragments and transforms into spindly fibrous bands, effectively illustrating a pinning effect. The morphological change of the β-phase not only promotes the DRX process but also inhibits the growth of DRXed grains, thereby refining the grain size. This research helps to expand the design strategies for extruded magnesium alloys. © 2025, The Authors. All rights reserved.

关键词： Magnesium alloys

来源：评论

学校读者我要写书评

暂无评论

Long lifespan Li-Se battery: Advances, challenges and prospects

引用

Journal of Energy Chemistry 2025年 102卷 712-733页

作者： Hongyan Li Thomas L. Madanu Tarek Barakat Wen-Da Dong Alexandru Vlad Xikun Zhang Cheng-Bin Jin Yu Li Bao-Lian Su College of Materials and Chemistry China Jiliang University Hangzhou 310018 Zhejiang China Laboratory of Inorganic Materials Chemistry (CMI) Namur Institute of Structured Matter (NISM) University of Namur 61 rue de Bruxelles B-5000 Namur Belgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430074 Hubei China Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Université catholique de Louvain Louvain-la-Neuve Belgium

Lithium-selenium (Li-Se) batteries have attracted increasing attention as one of the next-generation battery systems due to much higher electronic conductivity and comparable volumetric capacity of Se compared to the popular sulfur cathode. However, its practical application still faces great challenges, especially the rapid capacity decay triggered by the loss of active Se species. A comprehensive review to uncover the in-depth failure mechanism and provide targeted solutions to promote the stable operation of Li-Se batteries is urgently needed. This review systematically summarizes the strategies in the new perspective, focusing on the optimization of Se utilization in Li-Se batteries by keeping a high Se maintenance in the cathode and accelerating the electrochemical kinetics of lithium polyselenides (LiPSe) conversion. On the basis of structural design and Li 2 Se active material introduction to accommodate volume expansion, blocking shuttle transport of LiPSe by physical/chemical adsorption, bonding Se with polymers or cathode electrolyte interphase (CEI) construction, and catalytic design to accelerate the conversion of LiPSe, different strategies for improving the utilization of Se have been evaluated and discussed. To address the inevitable loss of Se, prospects on inactive Se reactivation and Li protection are detailedly proposed and analyzed referring to the chemistry and corrosion science. Additionally, the perspectives on the future design and comprehensive parameter evaluations for the optimization of Li-Se batteries are recommended. This review comprehensively explains the causes and solutions of capacity fading and provides potential efforts for lifespan expansion of batteries, shedding light on the future development of Li-Se batteries.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Revealing Effect of Aggregation Structure of Plant Precursors on Rate Performance of Carbon Anode for Sodium-Ion Batteries

引用

advanced Functional materials 2025年

作者： Zhang, Tianyun Zhang, Tian Zhao, Changhong Wang, Fujuan Zhang, Lirong Li, Yu Zhang, Liyu Ran, Fen School of Mechanical and Electronical Engineering Lanzhou University of Technology Lanzhou730050 China State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals School of Materials Science and Engineering Lanzhou University of Technology Lanzhou730500 China

Plant-based hard carbon is a highly promising anode material for sodium-ion batteries. Numerous studies have dedicated significant effort to the selection of precursors;however, there has been limited comprehensive research on the low-rate performance of plant-based hard carbon. Indeed, the aggregated structure of cellulose and hemicellulose in precursors has been underestimated regarding its influence on the material properties. In this study, the inherent aggregated structure of kapok fiber is optimized. It has been observed that the aggregation structure of the precursor significantly influences the content of highly disordered carbon post-carbonization, consequently impacting the rate performance of the derived anode material. To address the problems, aluminum ions innovatively are used to support the crushed cellulose-hemicellulose arrays, and the prepared carbon anode has a capacity retention rate of up to≈70% at a current density increased from 0.05 to 3.2 A g−1. This research not only clarifies the mechanism by which the structure leads to the decline of rate performance but also innovatively introduces the ion coupling method to repair the structure, thereby achieving the optimization of rate performance. © 2025 Wiley-VCH GmbH.

关键词： aggregation structure kapok fibers plant precursors rate performance sodium-ion batteries

来源：评论

学校读者我要写书评

暂无评论

Fuel Cell Performance Degradation Prediction Method Based on Hybrid Probabilistic Data-driven Model

引用

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering 2025年第10期45卷 3892-3901页

作者： Guo, Bingxin Xie, Changjun Zhu, Wenchao Yang, Yang Du, Banghua Wuhan University of Technology Hubei Province Wuhan430000 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Province Wuhan430000 China

Accurately predicting the degradation characteristics of fuel cells can provide a solid basis for control and diagnosis decisions. However, mainstream data-driven methods often do not take into account uncertainty factors such as measurement errors caused by experimental conditions and the model's dependence on the data during the modeling phase. Therefore, only a single point estimate can be provided, resulting in a lack of sufficient credibility in the performance degradation results. This paper proposes a mixed-probability data-driven model (MPDD) that combines the characteristics of multiple data-driven models using Bayesian theory, which could quantify the uncertainty of the model's dependence on the data and provide prediction results for fuel cell performance degradation trends in both point estimates and interval estimates. Based on the full operating condition data in fuel cell dynamic load cycle (FC-DLC), the point estimate results of the MPDD model outperform those of a single data-driven model. Furthermore, based on the steady-state data in FC-DLC, the MPDD model achieves up to a 33% improvement in the concentration rate of interval estimates compared to Gaussian process regression (GPR). The prediction results indicate that this forecasting method possesses excellent uncertainty quantification capabilities and could provide more practical decision recommendations for the operation of electrohydrogen coupling devices. ©2025 *** ***.

关键词： Gaussian distribution

来源：评论

学校读者我要写书评

暂无评论

NiTi alloys with simultaneous equiaxed-grain strength and columnar-grain ductility manipulated by direct energy deposition

引用

Journal of Alloys and Compounds 2025年 1028卷

作者： Lu, Jiaqi Zhang, Chi Liu, Yang Huang, Zhifeng Hou, Huilong Huang, Aijun Chen, Fei State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China International School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China Hubei Longzhong Laboratory Xiangyang441106 China Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory Chaozhou521000 China School of Materials Science and Engineering Beihang University Beijing100191 China Hangzhou310023 China Monash University Notting HillVIC3168 Australia

NiTi alloys prepared by additive manufacturing (AM) often have coarse columnar grains showing poor tensile superelasticity, strength, and ductility, significantly impairing part qualification and targeted applications. In this work, we used laser-engineered net shaping (LENS) to fabricate NiTi alloys with lamellar structures which consist of fine nearly equiaxed grains, columnar grains, and high-density dislocations, through periodically alternating processing parameters. This strategy can partially keep the equiaxed grains produced by the transformation from columnar grains to equiaxed grains (CET) at the top of the deposited layer, and interrupt the epitaxial growth of columnar grains in AM-ed NiTi alloys. The results show that NiTi alloys with lamellar structures exhibit an excellent combination of strength and ductility with a tensile strength of 649 MPa strain of 17.5 %, a maximum recovery strain of 5.3 %, and a stable recovery strain of 3.1 % after 20 cycles. Our findings may increase the range of adjustable microstructures and combinations of properties in NiTi alloys and provide a new idea for microstructure modification and reinforcement of AM shape memory alloy. © 2025 Elsevier B.V.

关键词： Tensile strain

来源：评论

学校读者我要写书评

暂无评论

A strong and plastic Fe-based composite alloy with extremely high saturation magnetic flux density by constructing multiscale heterogeneous structure

引用

Journal of materials Science & technology 2026年 240卷 156-165页

作者： Zhilin Wen Xiao Liu Siyi Di Lichen Liu Liliang Shao Yuqiang Yan Zhengwu Peng Jing Zhou Haibo Ke Liejun Li Weihua Wang Guangdong Key Laboratory for Advanced Metallic Materials Processing South China University of Technology Guangzhou 510640 China Songshan Lake Materials Laboratory Dongguan 523808 China Xinjiang Key Laboratory of Solid State Physics and Devices Xinjiang University Urumqi 830046 China Department of Materials Science Engineering College of Science and Engineering City University of Hong Kong Hong Kong 999077 China

For power electronic devices in high-energy-density and under mechanically demanding loading conditions, soft magnetic materials with high saturation magnetic flux density ( B s ) and superior mechanical properties are needed. Yet, conventional Fe-based metallic glass is often constrained by poor formability, limited plasticity and relatively low B s . This work introduces an innovative approach to fabricating amorphous-crystalline composites, achieved by ball milling hybridizing amorphous and crystalline powders, followed by spark plasma sintering. Through controlled elemental diffusion during sintering, the composite evolves into a phase-separated structure with densely packed interfaces composed of dual nanoscale grains. The resultant material not only exhibits remarkable compressive strength (i.e., a yield strength close to 1.4 GPa) and exceptional plasticity (17.1 %) but also attains a sufficiently high B s (2.0 T) with a low coercivity (245 A/m). Within our composites, deformation is deftly managed by diverse heterogeneous structures, where the synergistic effects of dislocation slip and nanotwinning effectively forestall catastrophic fracture. This research aspires to harmonize mechanical and magnetic properties by strategically constructing multiscale architectures.

关键词： Fe-based metallic glass Mechanical property High saturation magnetic flux density Saturation magnetic flux density

来源：评论

学校读者我要写书评

暂无评论

ZrO2-CPS/ZrO2 graded composite ceramics with high osteoinductivity for dental implants fabricated by stereolithography

引用

Ceramics International 2025年

作者： Wu, Jiaxin Li, Zhi Meng, Xingliang Cheng, Bo Yang, Jing Li, Binbin Wang, Xinyu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen Valley Foshan528200 China Hainan Institute Wuhan University of Technology Sanya572000 China Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of Technology Wuhan430070 China School of Foreign Languages Wuhan University of Technology Wuhan430070 China Department of Stomatology Zhongnan Hospital of Wuhan University Wuhan430060 China

Promoting mechanical strength and osteoinductivity properties is crucial for dental implants materials. Herein, we synthesized silicocarnotite (CPS) powder via a hydrothermal method, and mixed it with zirconia to create a composite material for preparing four slurries: xCPS-(1−x)ZrO2 (x = 0, 1/6, 1/3, and 1/2 vol%). The optimal printing parameters for each slurry were investigated. Following the printing of the slurries, debinding was performed on them in the temperature range of 25 °C–600 °C in nitrogen atmosphere and 600 °C–1000 °C in air atmosphere, respectively, followed by sintering at 1350 °C for 2 h. The graded zirconia-based composite ceramics prepared using stereolithography (SLA) exhibited excellent mechanical properties, including a flexural strength of 742.37 ± 22.52 MPa, Vickers hardness of 7.29 ± 0.15 GPa, fracture toughness of 5.34 ± 0.29 MPa m1/2, and a relative density of 96.3 %. Compared with zirconia ceramics, the graded composite ceramics displayed higher surface roughness. The graded composite ceramics degraded and released Ca, Si, and P ions, promoting MC3T3-E1 cells proliferation, adhesion, and osteogenic differentiation. These findings suggest that ZrO2-CPS/ZrO2 graded composite ceramics synthesized via SLA holds great potential as dental implants with high osteoinductivity. © 2025

关键词： Fracture toughness

来源：评论

学校读者我要写书评

暂无评论

Full-Scaling Friction and Wear Laws of Nanotwinned Metals

引用

Physical Review Letters 2025年第16期134卷 166201-166201页

作者： Yan Lin Ziyue Zhang Fenghui Duan Fangming Wang Fei Liang Qicheng Zhang Yong Li Jie Pan Keke Chang Yonghao Zhao Yuntian Zhu Xiang Chen Nano and Heterogeneous Materials Center School of Materials Science and Engineering Nanjing University of Science and Technology Nanjing China Department of Materials Science and Engineering City University of Hong Kong Hong Kong China State Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo China State Key Laboratory of Material Processing and Die and Mould Technology and School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan China School of Materials Science and Engineering Hohai University Changzhou China

Ultrastrong nanotwinned (NT) metals hold promise for mitigating friction and wear—essential for enhancing the energy efficiency and longevity of all moving systems. However, optimizing their tribological performance has long suffered from the absence of friction and wear laws across varying tribological loading scales. Here, we have discovered full-scaling twin lamella spacing (λ)-dependent friction and wear laws in NT pure nickel and identified critical deformation mechanisms for reducing friction and wear. Nanoscale friction initially increases with decreasing λ, peaking at 20 nm, and then decreases due to a transition from dislocation-twin boundary interactions to detwinning. Under microscale loading, friction and wear reduce linearly with decreasing λ, attributed to an unforeseen phase transition from face-centered cubic to hexagonal close-packed structures. Furthermore, under macroscale loading, the formation of a durable oxide layer and a stable gradient nanostructure in nanotwinned nickel with λ exceeding 20 nm aids in mitigating wear loss.

关键词： Nickel

来源：评论

学校读者我要写书评

暂无评论

Ionic Liquid-Grafted Mxene Composite Polymer Electrolytes for High-Performance Solid-state Batteries

SSRN

引用

SSRN 2025年

作者： Li, Yu Qian, Zhi Qiu, Zhao-Dong Wang, Rui-Qing Wei, Mei-Tong Fei, An-Min Hu, Zhi-Yi Mohamed, Hemdan S.H. Chen, Li-Hua Su, Bao-Lian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Wuhan University of Technology Wuhan430070 China Physics Department Faculty of Science Fayoum University El Gomhoria Street Fayoum63514 Egypt University of Namur NamurB-5000 Belgium

All-solid-state batteries (ASSBs) have obtained much attention due to the high energy density and security. At present, PEO-based solid-state batteries are considered to be one of the most promising candidates for high-performance ASSBs due to the excellent processability and good interfacial stability. However, low ionic conductivity and Li+ transference number seriously hinder their progress in practical applications. Here, a novel filler is developed by embedding ionic liquid (IL) grafted onto the surface of MXene to improve the electrochemical performance of PEO-based solid composite polymer electrolyte (MXene-IL-SPE) for ASSBs. The 2D MXene can significantly reduce the crystallinity of PEO, and the presence of IL not only enhances the dispersion of MXene in the polymer matrix, but also promotes the dissociation of lithium salts and anchors anions. As a result, the MXene-IL-SPE possesses high ionic conductivity (7.19 × 10-4 S cm-1) and Li+ transference number (0.51), together with wide electrochemical window (5.2 V) at 60 °C. The assembled LiFePO4|MXene-IL-SPE|Li full cell exhibits remarkable rate capability and exceptional capacity of 154.8 mAh g-1 over 120 cycles with an impressive 95.3% capacity retention at 0.5 C. This design opens up a new way to prepare high performance CPEs for ASSBs. © 2025, The Authors. All rights reserved.

关键词： Solid-state Batteries

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：