检索结果-内蒙古大学图书馆

Refined platelet size: Unlocking enhanced mechanics in nacre-mimetic mineralized materials

Nano Today 2025年 62卷

作者： Chen, Wei Ma, Yuanyuan Xu, Shiqing Wang, Yang Zhang, Pengchao Meng, Jingxin Fu, Zhengyi Wang, Shutao CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing100190 China Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China University of Chinese Academy of Sciences Beijing100049 China

Nacre-mimetic mineralized (NMM) materials with outstanding mechanical properties have been considered as future structural materials. However, replicating nacre's characteristics into artificial ones in mild conditions has been challenging, particularly in controlling the platelet size, which is crucial for mechanical performance. Here, inspired by mollusk biomineralization, we achieve the unprecedented regulation of aragonite platelet sizes (ranging from 76 to 5800 μm2) at the micrometer scale by manipulating amorphous nano calcium carbonate content, thereby enhancing the mechanical properties of NMM materials. Experimental and simulation results demonstrate that merely decreasing the aragonite platelets' sizes can significantly increase the flexural strength and modulus by 2.8 and 9.9 times, respectively. Notably, the proposed strategy not only has the potential for large-scale production but also produces refined NMM material that closely resembles natural nacre in terms of microstructure and mechanical properties, showing ca. 26 % improvement in specific strength over previously reported NMM materials. Consequently, this work provides a feasible way for developing advanced biomimetic structural materials with specific functions, such as protective gear and artificial bone grafts. © 2025 Elsevier Ltd

关键词： Biomimetic mineralization Mechanical property Nacre-mimetic materials Platelet size

来源：评论

学校读者我要写书评

暂无评论

Construction of an Anti-Anionic-Depletion Layer to Mitigate the Tip Deposition Effect for Dendrite-Free Zinc Anode

SSRN

引用

SSRN 2024年

作者： Li, Xiaohui Qiu, Dan Zhou, Qiancheng Yang, Ze Zhou, Xing Wang, Wenping Wei, Chenchen Zou, Ting Yu, Ying Institute of Nanoscience and Nanotechnology College of Physical Science and Technology Central China Normal University Wuhan430079 China State Key Laboratory of Advanced Technology for Materials Synthesis and processing Wuhan University of Technology Wuhan430070 China

Rechargeable aqueous zinc-ion batteries have been plagued by the well-known problem of zinc dendrite formation. This issue mainly arises from the inherent depletion of anions in the vicinity of the zinc anode during deposition process, leading to a strong spatial electric field that influences Zn2+ cations deposition and triggers dendrite growth. Herein, the anti-anionic-depletion strategy is proposed that involves anions anchored in the surface region of zinc anode to mitigate the adverse effects of the spatial electric field and inhibit dendrite growth. By theoretical calculations and experimental verification, layered double hydroxides (LDHs) materials were selected to immobilize SO42- anions and construct a protective coating layer against anion depletion (anti-anionic-depletion layer). Furthermore, the deposition flux of Zn2+ cations was also regulated by in-situ growing LDH nanosheets. Benefiting from these modifications, the in-situ grown ZnAl-LDH modified electrode (Zn@ZnAl) exhibits outstanding stability (5500 cycles at 40 mA cm-2), and shows negligible capacity degradation in both Zn-Mn full cells and zinc hybrid capacitors. © 2024, The Authors. All rights reserved.

关键词： Positive ions

来源：评论

学校读者我要写书评

暂无评论

Microwave synthesis and enhancement of thermoelectric performance in Hf_(x)Ti_(1-x)NiSn_(0.97)Sb_(0.03)half-Heusler bulks

引用

Rare Metals 2023年第11期42卷 3780-3786页

作者： Ying Lei Yu Li Run-Dong Wan Wen Chen Hong-Wei Zhou School of Metallurgical Engineering Anhui University of TechnologyMaxiang RoadMa’anshan243032China College of Materials Science and Engineering Kunming University of Science and TechnologyKunming650093China Institute of Mineral Resources Development and Utilization Changsha Research Institute of Mining and Metallurgy Co.LtdChangsha410012China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of TechnologyLanzhou730050China Department of Mechanical Engineering Blekinge Institute of Technology37179KarlskronaSweden

We obtained TiNiSn-based half-Heusler Hf_(x)Ti_(1-x)NiSn_(0.97)Sb_(0.03)bulks with 85%-96%relative densities via 5-min microwave synthesis and 20-min microwave sintering in sealed *** phase composition and microstructure of samples were characterized by X-ray diffractometer(XRD)and scanning electron microscopy(SEM).Thermoelectric(TE)properties were measured,i.e.,Seebeck coefficient(S),electrical resistivity(ρ),and thermal conductivity(κ)through Seebeck coefficient/resistance analysis system(S/RAs)and laser flash thermal analyzer(LFT).The results show that the nearly single phase exists after microwave *** grain sizes and the number of grain boundaries decrease with increase in Hf-doping amount due to an increase in point *** matrix grains for Hf_(0.1)Ti_(0.9)NiSn_(0.97)Sb_(0.03)are~10μ*** nanoscle pores and precipitates are present as second phases in matrix *** real composition for Hf_(0.1)Ti_(0.9)NiSn_(0.97)Sb_(0.03)matrix grain is Hf_(3.51)Ti_(28.76)-Ni_(34.76)Sn_(31.55)Sb_(1.43).The variation trends of electrical resistivity,Seebeck coefficient,power factor,and thermal conductivity were analyzed in *** maximum figure of merit(ZT)of 0.46 is obtained for Hf_(0.1)Ti_(0.9-)NiSnSn_(0.97)Sb_(0.03)at 723 *** innovation route exhibits advantages for predation of TE bulks when compared to the conventional methods,especially in terms of efficiency while it still maintains TE performance.

关键词： Half-Heusler alloys Microwave synthesis Hf doping Thermoelectric figure of merit

来源：评论

学校读者我要写书评

暂无评论

Magnetic field intensity dependent microstructure evolution and recrystallization behavior in a Co-B eutectic alloy

引用

Journal of materials Science & technology 2023年第7期138卷 93-107页

作者： Fan Bu Yiyuan Zhang Haoxiang Liu Jun Wang Eric Beaugnon Jinshan Li Yixuan He State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Center of Advanced Lubrication and Seal Materials Northwestern Polytechnical UniversityXi’an 710072China Collaborative Innovation Center of NPU Shanghai 201108China Institute of Superconducting Materials and Applied Technology Northwestern Polytechnical UniversityXi’an 710072China Univ.Grenoble Alpes INSA ToulouseUniversity Toulouse Paul SabatierEMFLCNRSLNCMIGrenoble 38000France

Systematic understanding on the magnetic field intensity dependent microstructure evolution and re-crystallization behavior in a Co-B eutectic alloy under a constant undercooling(ΔT≈100 K)were carried *** of the magnetic field,the comparable size of divorced FCC-Co and Co_(3)B eutectic ellipsoidal grains coexist with a few regular *** the magnetic field is less than 15 T,the elongated primary FCC-Co dendrites parallel to the magnetic field with the dispersed FCC-Co nano-particles em-bedded within the Co_(3)B matrix occupy the inter-dendrite *** the magnetic field increases to 20 T,the FCC-Co/Co_(2)B anomalous eutectic colonies *** formation mechanism of Co_(2)B phase is discussed from several aspects of the competitive nucleation,the chemical redistribution induced by the thermomagnetic-induced convection and magnetic dipole interaction,and the strain-induced ***,the application of magnetic field is found to promote recrystallization,proved by the lower density of misorientation,the appearance of FCC-Co annealed twins and more Co_(3)B *** work could further enrich our knowledge about the magnetic-dependent microstructure evolution and recrystallization process in the undercooled Co-B system and provide guidance for controlling the microstructures and properties under extreme conditions.

关键词： Magnetic field Undercooled solidification Microstructure evolution Recrystallization Co-B alloy

来源：评论

学校读者我要写书评

暂无评论

Tribological properties of plasma-sprayed nickel alloy matrix self-lubricating coating at elevated temperatures

引用

Rare Metals 2021年第7期40卷 1844-1850页

作者： Wen-Sheng Li Yang Sun Wei Hu Sheng-Yu Zhu Hai-Min Zhai Jun Yang Xiang-Juan Fan Wei-Min Liu State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals School of Materials Science and EngineeringLanzhou University of TechnologyLanzhou 730050China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

A nickel alloy matrix high-temperature self-lubricating coating(77.5 wt%(Ni-Cr-Mo-Al)-12.5 wt%Ag-10 wt%BaF2/CaF2)was prepared by plasma spraying *** show that the Vickers microhardness of coating is(2.9±0.5)GPa,and the average bonding strength is about(35.6±0.5)*** coating rubbing against Inconel 718 superalloy pin exhibits superior tribological performance with coefficient of friction(COF)of below 0.25 and wear rate of 8.2×10^(-5)-15.2×10^(-5)mm^(3)·N^(-1)·m^(-1)at a wide temperature range from 25 to 800℃,and the COF and the wear rate are slightly reduced with temperature *** low COF and wear rate were attributed to the synergistic effects of Ag,BaF_(2)/CaF_(2),Ag2MoO_(4)and BaMoO_(4).

关键词： Coating Tribological behavior High temperature Self-lubricating

来源：评论

学校读者我要写书评

暂无评论

Intrinsic ion migration-induced susceptible two-dimensional phase-transition memristor with ultralow power consumption

引用

Science Bulletin 2025年

作者： Qin, Lanhao Yu, Yimeng Fang, Cheng Liu, Yujie Zhu, Kaichen Ouyang, Decai Liu, Shenghong Song, Bailing Zhou, Ruochen Lanza, Mario Hu, Wenhua Wu, Jinsong Li, Yuan Zhai, Tianyou State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Center of Hydrogen Science State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Innovation Center for Future Materials Shanghai Jiao Tong University Shanghai200240 China Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia School of Computer Science and Artificial Intelligence Wuhan University of Technology Wuhan430070 China

Two-dimensional (2D) phase-transition memristors have demonstrated transformative potential for neuromorphic computing, yet challenges like high power consumption, limited endurance, and crystal damage from external ion intercalation persist. Here, we introduce a novel 2D phase-transition memristor leveraging a paradigm-shifting mechanism by exploiting the ultrafast intrinsic Cu+ ion migration within Cu2S. This approach eliminates the need for external ion insertion, significantly reducing crystal damage and enabling exceptional cycling stability with over 400 DC cycles and 500 pulse cycles. The susceptible monoclinic-tetragonal phase-transition induced by intrinsic Cu+ migration achieves an unprecedented SET power consumption of 1 μW at 100 mV, significantly lower in currently reported phase-transition memristors. To further demonstrate the potential of intrinsic ion migration-induced (IIM) memristor, we simulated an IIM memristor crossbar array for image preprocessing in gesture recognition with a high SSIM value of 0.94, showcasing its potential for scalable neuromorphic hardware. This work establishes a new paradigm in low-power, high-performance phase-transition memristors, advancing their practical application in next-generation computing. © 2025 Science China Press

关键词： Memristor Neuromorphic device Two-dimensional materials

来源：评论

学校读者我要写书评

暂无评论

Screen and discovery of 10-component high-entropy borides composed of IV-VI group transition metals and rare earth elements

引用

Journal of materials Science & technology 2026年 242卷 226-237页

作者： Zifan Zou Liang Xu Ji Zou Shuaihang Qiu Jingjing Liu Wei Ji Wenwen Wu Zhenhao Han Weimin Wang Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration Zone Xiangyang 441000 China School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China School of Physics and Information Technology Shaanxi Normal University Xi’an 710062 China

High-entropy borides (HEBs) are emerging as promising candidates for extreme environmental applications due to their exceptional thermal stability, mechanical properties, and tunable electromagnetic properties. This study presents the first systematic investigation of rare-earth-doped deca-component high-entropy borides, (TM 0.9 RE 0.1 )B 2 , (TM = Zr, Hf, Nb, Ta, Ti, W, Cr, V, Mo and RE = Sc, Y, Gd, Dy, Ho, Er, Lu, Sm, Eu, Tm, Tb, Pr, Yb). Evaluations of multiple descriptors, including electron work function and mixing enthalpy, revealed that Sc-containing decaboride (HEB10-Sc) exhibits superior single-phase formation capability. In contrast, the widely used valence electron concentration parameter proved inapplicable due to identical outer-electron counts across rare-earth elements. Boro/carbothermal reduction (BCTR) experiments at 1650 °C, employing transition metal oxides, rare-earth oxides, and B 4 C as precursors, demonstrated that Sc uniquely enables the formation of a single-phase diboride with nine Group IVB-VIB transition metals, unlike other rare-earth dopants. The phase evolution mechanism during the BCTR process was elucidated: ScBO 3 , formed in situ during BCTR, exhibits greater reducibility resistance than the most refractory HfO 2 , thereby suppressing polyboride formation (common in other rare-earth systems) and facilitating single-phase HEB10 formation. The resulting HEB10-Sc displays outstanding electromagnetic wave absorption performance, achieving a reflection loss (RL) of −35.3 dB at 10.6 GHz (3 mm thickness) and an effective absorption bandwidth of 4.7 GHz in the X and Ku bands. These findings underscore the critical role of rare-earth doping in tailoring the structural and functional properties of high-entropy borides, offering a pathway to design advanced multifunctional materials for extreme environments such as thermal protection and high-temperature electromagnetic absorption in aerospace and electronic applications.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Cu(OAc)_(2)-Mediated synthesis of Fullerodihydropyridine-3-ones via the Reaction ofFullerene with β-Substituted Ethylamines in the Absence or Presence of Arylacetaldehydes

引用

Chinese Journal of Chemistry 2023年第13期41卷 1557-1565页

作者： Xiu-Shan Liu Hui-Juan Wang Fei-Lun Wu Jing-Wen Huo Xing-Yu Wang Fa-Bao Li Rui Sun Li Liu Chao-Yang Liu State Key Laboratory of Biocatalysis and Enzyme Engineering School of Life SciencesHubei UniversityWuhanHubei430062 China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Center for Magnetic ResonanceWuhan Institute of Physics and MathematicsInnovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhanHubei430071 China Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional MoleculesCollege of Chemistry and Chemical EngineeringHubei UniversityWuhanHubei430062 China

A series of unreported fullerodihydropyridine-3-ones were synthesized as a new family of fullerene derivatives in moderate to good yields by a simple one-step reaction of[60]fullerene with cheap and readily available β-substituted ethylamines in the absence or presence of arylacetaldehydes under the assistance of Cu(OAc)_(2).The in situ generation of arylacetaldehydes by the C—N bond cleavage of arylethylamines avoided their complex synthesis in advance and realized the preparation of fullerodihydropyridine-3-ones with structural and functional diversities,which may have promising applications in perovskite solar cells to improve the performance of photovoltaic devices due to the existence of a largeπ-conjugated system on the dihydropyridine-3-one ring.

关键词： Fullerenes Copper β-Substituted ethylamines Arylacetaldehydes Fullerodihyd ropyridine-3-ones Radical reactions

来源：评论

学校读者我要写书评

暂无评论

Effect of Hot-Rolled Oxide Scale on Dry/ Wet Cyclic Corrosion Behavior of Q370qNH Steel in Simulated Industrial Atmosphere Environment

引用

Journal of Wuhan University of technology(materials Science) 2022年第6期37卷 1216-1227页

作者： REN Yuxia GUO Tieming XU Xiujie LI Guangming TANG Jian NAN Xueli JIA Jiangang State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of TechnologyLanzhou 730050China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China Gansu Province Transportation Planning Surveydesign Institute Co.LtdLanzhou 730050China

The corrosion behavior of Q370qNH steel in the presence and absence of hot-rolled oxide scale in simulated industrial atmospheric environment was studied by dry/wet cycle accelerated corrosion *** experimental results show that the corrosion type of bare steel is uneven overall corrosion and large size pitting corrosion in small areas;that of oxide scale sample is local dissolution corrosion and small size pitting corrosion in large areas,and corrosion rate is much smaller than that of bare *** corrosion products of both steels are composed ofα-FeOOH,γ-FeOOH,Fe_(2)O_(3),and Fe_(3)O_(4),but the formation mechanism is *** bare steel generatesα-FeOOH andγ-FeOOH through“acid regeneration cycle mechanism”;the oxide scale sample generates hydroxides mainly through the gradual dissolution of the oxide film,and then through“the acid regeneration cycle mechanism”.With the extension of corrosion time,the electrochemical stability of the sample with oxide scale increases,but the change of tafel curve of bare steel sample is not *** simulated industrial atmosphere,the existence of hot-rolled oxide scale can facilitate the formation of dense rust layer on the surface of Q370qNH steel,which is more protective than bare steel.

关键词： Q370qNH steel oxide scale NaHSO3 corrosion behavior

来源：评论

学校读者我要写书评

暂无评论

原位渗硼激光熔覆FeCoCrNiMn涂层的摩擦学性能研究及其在齿轮修复中的应用

引用

表面工程与再制造 2024年第3期24卷 65-67页

作者： Dongya Zhang Xiaoyu Suo JinYuan Liu Zhongwei Li Yanchao Zhang Hongxing Wu Key Laboratory of Manufacturing Equipment of the Shaanxi Province School of Mechanical and Precision Instrument Engineering Xi’an University of Technology Xi’an PR China State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal Materials Northwestern Polytechnical University 710072 Xi’an China

高速重载的机械作业中,齿轮易发生点蚀、粘着和磨损,从而导致轮齿断裂和磨损失效。本文通过激光熔覆与渗硼集成的方式对失效齿轮进行修复实验,并对其摩擦学性能和修复后振动特性进行了系统研究。与母材相比,硼化物表面的平均硬度提高了8... 详细信息

高速重载的机械作业中,齿轮易发生点蚀、粘着和磨损,从而导致轮齿断裂和磨损失效。本文通过激光熔覆与渗硼集成的方式对失效齿轮进行修复实验,并对其摩擦学性能和修复后振动特性进行了系统研究。与母材相比,硼化物表面的平均硬度提高了8.37倍,耐磨性提高了15.60倍。

关键词：激光熔覆平均硬度渗硼硼化物机械作业摩擦学性能磨损失效高速重载

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：