检索结果-内蒙古大学图书馆

Ductile and high strength Cu fabricated by solid-state cold spray additive manufacturing

Journal of materials Science & technology 2023年第3期134卷 234-243页

作者： Chaoyue Chen Yingchun Xie Shuo Yin Wenya Li Xiaotao Luo Xinliang Xie Ruixin Zhao Chunming Deng Jiang Wang Hanlin Liao Min Liu Zhongming Ren State Key Laboratory of Advanced Special Steels School of Materials Science and EngineeringShanghai UniversityShanghai 200444China Institute of New Materials Guangdong Academy of SciencesNational Engineering Laboratory of Modern Materials Surface Engineering TechnologyGuangdong Provincial Key Laboratory of Modern Surface Engineering TechnologyGuangzhou 510651China Trinity College Dublin The University of DublinDepartment of Mechanical and Manufacturing EngineeringParsons BuildingDublin 2Ireland State Key Laboratory of Solidification Processing Shaanxi Key Laboratory of Friction Welding TechnologiesSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Key laboratory for Light-weight Materials Nanjing Techchnology UniversityNanjing 211816China ICB UMR 6303 CNRSUniv.Bourgogne Franche-ComtéUTBMF-90010 BelfortFrance

In this work,pure Cu with excellent strength and ductility(UTS of 271 MPa,elongation to fracture of 43.5%,uniform elongation of 30%)was prepared using cold spray additive manufacturing(CSAM),realizing a breakthrough in the *** in-depth investigation was conducted to reveal the microstructure evolution,strengthening and ductilization mechanisms of the CSAM Cu,as well as the single *** results show that the CSAM Cu possesses a unique heterogeneous microstructure with a bimodal grain structure and extensive infinitely circulating ring-mounted distribution of *** on the single splat observation,the entire copper particle forms a gradient nano-grained(GNG)structure after high-speed impact *** GNG-structured single splat serves as a unit to build the heterogeneous microstructure with bimodal grain distribution during the successive deposition in *** results also show that CSAM can achieve synergistic strengthening and ductilization by controlling the grain refinement and dislocation *** work provides potential for CSAM technique in manufacturing various metallic parts with the desired combination of high strength and good ductility without additional post-treatments.

关键词： Cold spray additive manufacturing Copper Heterogeneous microstructure Strength Ductility

来源：评论

学校读者我要写书评

暂无评论

Recent advances in catalyst-modified Mg-based hydrogen storage materials

引用

Journal of materials Science & technology 2023年第32期163卷 182-211页

作者： Yaxiong Yang Xin Zhang Lingchao Zhang Wenxuan Zhang Huifeng Liu Zhenguo Huang Limei Yang Changdong Gu Wenping Sun Mingxia Gao Yongfeng Liu Hongge Pan Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an 710021China State Key Laboratory of Silicon Materials Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and EngineeringZhejiang UniversityHangzhou 310058China School of Civil&Environmental Engineering University of Technology Sydney81 BroadwayUltimoNSW2007Australia

The storage of hydrogen in a compact,safe and cost-effective manner can be one of the key enabling technologies to power a more sustainable *** hydride(MgH_(2))has attracted strong research interest as a hydrogen carrier because of its high gravimetric and volumetric hydrogen ***,the practical use of MgH_(2)for hydrogen storage has been limited due to high operation temperatures and sluggish *** is of crucial importance for the enhancement of hydrogen cycling kinetics of Mg/MgH_(2)and considerable work has been focused on designing,fabricating and optimizing *** review covers the recent advances in catalyzed Mg-based hydrogen storage *** fundamental properties and the syntheses of MgH_(2)as a hydrogen carrier are first briefly *** that,the general catalysis mechanisms and the catalysts developed for hydrogen storage in MgH_(2)are summarized in ***,the challenges and future research focus are *** studies indicate that transition metals,rare-earth metals and their compounds are quite effective in catalyzing hydrogen storage in Mg/MgH_(2).Most metal-containing compounds were converted in situ to elemental metal or their magnesium alloys,and their particle sizes and dispersion affect their catalytic *** in-situ construction of catalyzed ultrasmall Mg/MgH_(2)nanostructures(<10 nm in size)is believed to be the future research *** important insights will help with the design and development of high-performance catalysts for hydrogen storage in Mg/MgH_(2).

关键词： Hydrogen storage Magnesium hydride Kinetics Catalysts Reversibility

来源：评论

学校读者我要写书评

暂无评论

具有可生物降解、细胞相容、抗菌及生物膜控制的壳聚糖磺基甜菜碱衍生物薄膜生物材料的研究

引用

Engineering 2024年第4期35卷 95-103页

作者： Maoli Yin Yingfeng Wang Xuehong Ren Tung-Shi Huang School of Textile and Garment Anhui Polytechnic UniversityWuhu 241000China State Key Laboratory of New Textile Materials and Advanced Processing Technologies&Key Laboratory of Textile Fiber and Products Ministry of Education&Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials and ApplicationSchool of Textile Science and EngineeringWuhan Textile UniversityWuhan 430200China Department of Poultry Science Auburn UniversityAuburnAL 36849USA

The purpose of this research was to develop a chitosan sulfobetaine(CS-SNCC)film via the solutioncasting method as a biodegradable antibacterial material for biomedical *** and monochloro-triazine sulfobetaine were used as the raw materials for CS-SNCC preparation,and Fourier-transform infrared(FTIR),ultraviolet–visible(UV-Vis),energy-dispersive X-ray(EDX),and Xray photoelectron spectroscopy(XPS)spectra were used to characterize and analyze the structure of the synthesized ***,the swelling property,thermal stability,biodegradability,cytocompatibility,and antibacterial properties of the CS-SNCC film were comprehensively investigated and compared with those of the chitosan *** results for the film’s enzymatic biodegradation behavior show that the CS-SNCC film undergoes a weight loss of 45.54%after 21 days of *** addition,the CS-SNCC film effectively resists bacterial adhesion,prevents the formation of bacteria biofilms,and exhibits high antibacterial activity,with inactivation rates of 93.43%for Escherichia coli and 91.00%for Staphylococcus ***,the CS-SNCC film shows good cellular activity and cytocompatibility according to the cytotoxicity ***,the prepared biodegradable,cytocompatible,antibacterial,and biofilm-controlling CS-SNCC film has potential for biomedical applications.

关键词： Chitosan Sulfobetaine Antibacterial Biofilm-controlling Film

来源：评论

学校读者我要写书评

暂无评论

Highly Selective Photocatalytic Conversion of Glucose on Holo-Symmetrically Spherical Three-Dimensionally Ordered Macroporous Heterojunction Photonic Crystal

引用

CCS Chemistry 2023年第8期5卷 1773-1788页

作者： Ting-Wei Wang Zhi-Wen Yin Yin-Hao Guo Fang-Yuan Bai Jun Chen Wenda Dong Jing Liu Zhi-Yi Hu Lihua Chen Yu Li Bao-Lian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology430070 Wuhan Nanostructure Research Centre(NRC) Wuhan University of Technology430070 Wuhan Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 Namur

Photocatalytic conversion of biomass is considered an effective,clean,and environmentally friendly route to obtain high-valued chemicals and ***,the limited conversion efficiency and poor selectivity are still the main bottlenecks for photocatalytic biomass ***,we report the highly selective photocatalytic conversion of glucose solution on holosymmetrically spherical three-dimensionally ordered macroporous TiO_(2)-CdSe heterojunction photonic crystal structure(s-TCS).The obtained s-TCS photocatalysts show excellent stability and strong light harvesting,uniform mass diffusion and exchange,and efficient photogenerated electrons/holes separation and *** optimized s-TCS-4 photocatalyst displays the highest photocatalytic performance for glucose oxidation and hydrogen *** glucose conversion,lactic acid selectivity,and yield on s-TCS-4 are about 95.9%,94.3%,and 96.4%,*** photocatalytic production of lactic acid for s-TCS-4(18.5 g/L)is 2.3 times higher than the pure spherical TiO_(2) photonic crystal without CdSe(s-TiO_(2),8.1 g/L),and the hydrogen production rate of s-TCS-4 is 9.4 times that of s-TiO_(2).For the first time,we reveal that the photocatalytic conversion of glucose to lactic acid is a third-order and four-electron-involved *** work could shed some new light on the efficient photocatalysis conversion of biomass to highly value-added products with high selectivity and yield,and simultaneously sustainable hydrogen evolution.

关键词： TiO_(2)-CdSe heterojunction spherical photonic crystal high-selective photocatalytic glucose conversion lactic acid photocatalytic H2 production four-electron involved reaction third-order reaction

来源：评论

学校读者我要写书评

暂无评论

Tunable vortex radiation source driven by free electrons

引用

Optics Letters 2025年第10期50卷 3333-3336页

作者： Li, Sirui Li, Tianyi Sun, Jingbo Wen, Yongzheng Zhou, Ji State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing100084 China State Key Laboratory of Nuclear Physics and Technology Institute of Heavy Ion Physics School of Physics Peking University Beijing100871 China

In this Letter, we propose a scheme to generate tunable vortex radiation through the interaction of free electrons with a dual-layer metasurface. The metasurface combines a field-enhancement layer with a phase-modulation layer to produce enhanced Smith–Purcell radiation (SPR) while enabling gradient phase control. This configuration efficiently converts the free-electron evanescent field into a coherent vortex beam. Simulation results indicate that the proposed structure generates coherent radiation with approximately 4.5 times the intensity of conventional vortex radiation under identical electron-beam conditions. The frequency and direction of the vortex radiation can be tuned by varying the electron velocity. Moreover, the structure enables coherent vortex radiation generation with a small number of electrons, including low-velocity electrons, without requiring strong focusing magnetic fields or periodic electron bunching. This work establishes an innovative approach for developing compact, efficient, and tunable vortex radiation sources based on free electrons. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

关键词： Particle beam bunching

来源：评论

学校读者我要写书评

暂无评论

Heterostructured NiS_(2)@SnS_(2) hollow spheres as superior high-rate and durable anodes for sodium-ion batteries

引用

Science China Chemistry 2022年第7期65卷 1420-1432页

作者： Chongwei Li Jinchuan Hou Jingyi Zhang Xiaoyue Li Shiqi Jiang Guoqing Zhang Zhujun Yao Tiancun Liu Shenghui Shen Zhiqi Liu Xinhui Xia Jie Xiong Yefeng Yang School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China State Key Laboratory of Silicon Materials Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Provinceand School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China MOE Key Laboratory of Advanced Textile Materials and Manufacturing Technology Zhejiang Sci-Tech UniversityHangzhou 310018China Hangzhou Yanqu Information Technology Co. Ltd.Hangzhou 310003China

Tin-based sulfides have attracted increasing attention as anodes for sodium-ion batteries(SIBs) owing to their high theoretical capacity;however, the poor rate capability and inferior cycling stability caused by the low electrical conductivity, sluggish kinetics and drastic volume variations during cycling have greatly hampered their practical applications. Herein, heterostructured NiS_(2)@SnS_(2) hybrid spheres were delicately designed and constructed by anchoring interconnected SnS_(2) nanosheets on metalorganic frameworks(MOFs)-derived Ni S_(2) hollow spheres coupled with N-doped carbon skeleton through facile solvothermal and sulfurization/carbonization processes. The unique hollow heterostructure with highly conductive carbon matrix can effectively facilitate the charge transfer kinetics and ensure the desired buffer space while endowing more active sites and enhanced structural integrity, as demonstrated by the experimental and density functional theory(DFT) results. Benefitting from these merits, the NiS_(2)@SnS_(2) hybrid composite displays a high reversible capacity of 820 m Ah g^(-1) after 250 cycles at 1 A g^(-1), and retains a value of 673 m Ah g^(-1)after 1,300 cycles at 5 A g^(-1), manifesting the excellent high-rate and durable sodium storage behaviors when applied in SIBs. This study shall shed more light on the fabricating and interface engineering of other transition metal-based composite anodes for high-performance SIBs.

关键词： anode metal-organic frameworks heterostructure bimetallic sulfide sodium ion battery

来源：评论

学校读者我要写书评

暂无评论

processing Nomex Nanofibers by Ionic Solution Blow‑Spinning for Efficient High‑Temperature Exhausts Treatment

引用

advanced Fiber materials 2023年第2期5卷 497-513页

作者： Zekun Cheng Haiyang Wang Ziwei Li Chong Yang Baopu Zhang Yiqian Zhou Yuxuan Wang Chao Jia Lei Li Hui Wu State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China National Engineering Research Center of Electric Vehicles Beijing Institute of TechnologyBeijing 100081China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Hard-to-dissolve polymers provide next-generation alternatives for high-performance filter materials owing to their intrin-sically high chemical stability,superior mechanical performance,and excellent high-temperature ***,the mass production of hard-to-dissolve nanofibers still remains a critical challenge.A simple,scalable,and low-cost ionic solu-tion blow-spinning method has herein been provided for the large-scale preparation of hard-to-dissolve Nomex polymeric nanofibers with an average diameter of nearly 100 *** rapidly dissolving Nomex microfibers in the lithium chloride/dimethylacetamide(LiCl/DMAc)solution system,the conductive solution can be stably and conductivity-independently processed into *** method optimizes electrospinning and avoids spinnability degradation and potential safety hazards caused by high electrical *** to nanofibrous structure and high dipole moment,Nomex nanofibrous filters show a stable high filtration efficiency of 99.92%for PM_(0.3) with a low areal density of 4.6 g m^(-2),as well as a low-pressure drop of 189.47 ***,the flame-retardant filter can work at 250°C and 280°C for a long and short time without shrinking or burning,respectively,exhibiting a high filtration efficiency of 99.50%for PM_(0.3-10.0).The outstanding properties and low cost enable the efficient capture of PM from various high-temperature exhausts,making Nomex nanofi-brous membrane an even more ideal industrial-grade air filter than polypropylene,polytetrafluoroethylene,polyimide,and ceramic nanofibrous filters.

关键词： Nomex nanofibers Solution blow-spinning High-temperature filtration Flame-retardant

来源：评论

学校读者我要写书评

暂无评论

Flame-retardant Cotton Fabric based on Electrostatic Layer-by-layer Assembly of Vermiculite

Flame-retardant Cotton Fabric based on Electrostatic Layer-b...

引用

作者： Hong-Bin Cheng Xiao-Shu Liu Shi-Li Xiao School of Textile Science and Engineering Wuhan Textile University State Key Laboratory of New Textile Materials & Advanced Processing Technology

Flame-retardant cotton fabric, in clothing and decoration, can reduce the damage in a fire. This study reports a facile way to prepare vermiculite-assembled cotton fabrics using layer by layer assemble technique. The vermiculite-assembled cotton fabrics synthesized are characterized by SEM, FTIR, Instron and a vertical inflammability test. The results show that vermiculite assembled on cotton fabrics could improve the mechanical property and endow the fabric with the good flame-retardant property.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A Deep Dive into Spent Lithium-Ion Batteries:from Degradation Diagnostics to Sustainable Material Recovery

引用

Electrochemical Energy Reviews 2024年第1期7卷 1250-1297页

作者： Xue Bai Yanzhi Sun Xifei Li Rui He Zhenfa Liu Junqing Pan Jiujun Zhang State Key Laboratory of Chemical Resource Engineering College of ChemistryBeijing University of Chemical TechnologyBeijing 100029China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108FujianChina Institute of Energy Resources Hebei Academy of SciencesShijiazhuang 050081HebeiChina Xi’an Key Laboratory of New Energy Materials and Devices Institute of Advanced Electrochemical Energy&School of Materials Science and EngineeringXi’an University of TechnologyXi’an 710048ShaanxiChina

To address the rapidly growing demand for energy storage and power sources,large quantities of lithium-ion batteries(LIBs)have been manufactured,leading to severe shortages of lithium and cobalt *** lithium-ion batteries are rich in metal,which easily causes environmental hazards and resource scarcity *** appropriate disposal of retired LIBs is a pressing *** utilization and electrode material recycling are considered the two key solutions to addressing these ***,both approaches have become integral to the life cycle of LIBs,encompassing production and *** pressure to protect the ecological environment and the scarcity of metal resources have necessitated the importance of echelon utilization and material recycling of retired *** practices have emerged as important contributors to the sustainable development of the battery *** paper provides a comprehensive review of the echelon utilization and material recycling of retired ***,the reasons for the performance degradation of LIBs during use are comprehensively analyzed,and the necessity of recycling retired batteries is analyzed from the perspectives of ecology and safety,sustainable development,economy,energy conservation and emission ***,the key technologies,problems and challenges faced by the current echelon utilization are summarized,as are typical application examples at home and ***,the recycling technology of waste LIB materials is systematically summarized,including traditional recycling technology and new green recycling technology,as well as direct recycling technology for waste LIB ***,the potential for echelon utilization and the recycling of waste battery materials are explored,and several conclusions are drawn.

关键词： Carbon neutrality Echelon utilization Green recycling Direct regeneration Spent lithium-ion batteries

来源：评论

学校读者我要写书评

暂无评论

Zr_(2)SeB and Hf_(2)SeB:Two new MAB phase compounds with the Cr_(2)AlC-type MAX phase(211 phase)crystal structures

引用

Journal of advanced Ceramics 2022年第11期11卷 1764-1776页

作者： Qiqiang ZHANG Yanchun ZHOU Xingyuan SAN Wenbo LI Yiwang BAO Qingguo FENG Salvatore GRASSO Chunfeng HU Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China Hebei Key Lab of Optic–Electronic Information and Materials College of Physics Science and TechnologyHebei UniversityBaoding 071002China State Key Laboratory of Green Building Materials China Building Materials AcademyBeijing 100024China

The ternary or quaternary layered compounds called MAB phases are frequently mentioned recently together with the well-known MAX ***,MAB phases are generally referred to layered transition metal borides,while MAX phases are layered transition metal carbides and nitrides with different types of crystal structure although they share the common nano-laminated structure *** order to prove that MAB phases can share the same type of crystal structure with MAX phases and extend the composition window of MAX phases from carbides and nitrides to borides,two new MAB phase compounds Zr_(2)SeB and Hf_(2)SeB with the Cr_(2)AlC-type MAX phase(211 phase)crystal structure were discovered by a combination of first-principles calculations and experimental verification in this ***-principles calculations predicted the stability and lattice parameters of the two new MAB phase compounds Zr_(2)SeB and Hf_(2)*** they were successfully synthesized by using a thermal explosion method in a spark plasma sintering(SPS)*** crystal structures of Zr_(2)SeB and Hf_(2)SeB were determined by a combination of the X-ray diffraction(XRD),scanning electron microscopy(SEM),and high-resolution transmission electron microscopy(HRTEM).The lattice parameters of Zr_(2)SeB and Hf_(2)SeB are a=3.64398Å,c=12.63223Åand a=3.52280Å,c=12.47804Å,*** the atomic positions are M at 4f(1/3,2/3,0.60288[Zr]or 0.59889[Hf]),Se at 2c(1/3,2/3,1/4),and B at 2a(0,0,0).And the atomic stacking sequences follow those of the Cr_(2)AlC-type MAX *** work opens up the composition window for the MAB phases and MAX phases and will trigger the interests of material scientists and physicists to explore new compounds and properties in this new family of materials.

关键词： Zr_(2)SeB and Hf_(2)SeB MAB phase MAX phase first-principles calculations thermal explosion synthesis

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：