检索结果-内蒙古大学图书馆

Morphological observation and mineralogical analysis of basaltic debris from a Chang'e-5 drilled lunar soil sample

Particuology 2025年第1期96卷 256-263页

作者： Hongtao Cao Meng Zou Wei Zhang Xinyang Li Rui Zhang Qing Liang Zhenzhen Zhao Dengman Feng Zizhun Wang Nailin Yue Xicheng Li Fangfei Li Qiang Zhou Li Liu Xiujuan Li Key Laboratory of Bionic Engineering Ministry of EducationJilin UniversityChangchun 130025China Key Laboratory of Automobile Materials Ministry of Education School of Materials Science&EngineeringElectron Microscopy CenterInternational Center of Future ScienceJilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy MaterialsJilin UniversityChangchun 130012China Synergetic Extreme Condition High-Pressure Science Center State Key Laboratory of Superhard MaterialsCollege of PhysicsJilin UniversityChangchun 130012China Deep Space Exploration Lab Beijing 100195China

This paper analyzes the morphological characteristics and mineralogy of drilled basaltic clast sample CE5Z0806YJYX004, compares the variations in Chang'e-5 samples at different depths, and conducts a comparative analysis with surface-collected samples from Chang'e-5 and Apollo missions. Interestingly, advanced electron microscopy identified bubbles and microcracks on the surface of some constituting mineral particles, and also displays crystalline particles with distinct rock textures and spherical droplets, revealing surface phenomena formed by space weathering. Based on Raman spectroscopy analysis, the main mineral phases were identified as 49.6 vol% pyroxene, 31.4 vol% plagioclase and 8.8 vol% olivine. Apatite, ilmenite and cristobalite are also found. The results indicate that the Chang'e-5 lunar soil exhibits similar mineral compositions at different depths. In short, a comparison was made between our drilling sample and the Chang'e-5 soil samples as well as samples from the Apollo mission series, demonstrating the physical similarities and some variations.

关键词： Chang'e-5 Lunar soil Drilled sample Physical properties Mineralogy

来源：评论

学校读者我要写书评

暂无评论

Constructing a novel bi-lamellar microstructure in selective laser melted Ti-6Al-4V alloy via electropulsing for improvement of strength and corrosion resistance

引用

Journal of materials science & Technology 2024年第26期193卷 37-50页

作者： Xudong Yan Xiaofeng Xu Yachong Zhou Zhicheng Wu Lai Wei Dayong Zhang School of Ocean Science and Technology Dalian University of TechnologyPanjin 124221China Key Laboratory of Automobile Materials Ministry of Educationand Department of Materials Science and EngineeringJilin UniversityChangchun 130025China

Traditional heat treatments may cause deterioration in the yield strength and corrosion resistance of the selective laser-melted(SLM)Ti-6Al-4V alloy due to the coarsening ofαlath and alloy element partitioning(AEP).However,electropulsing has been found to inhibit the growth of primaryαand the process of *** also introduces finerαlath in the transformedβregion and generates a novel bi-lamellar *** microstructure has minimal element concentration difference between the primaryαand transformedβ.As a result,the transformedβregion exhibits a higher content of Al element and finerαlath,leading to a higher overall yield strength(952 MPa)compared to the heat-treated sample(855 MPa).The novel microstructure induced by electropulsing enhances the polarization resistance,improves the stability and thickness of the passive film,and ultimately enhances the corrosion ***,this technology can be extended to other SLMα+βtitanium alloys to simultaneously improve their mechanical properties and corrosion resistance.

关键词： SLM Ti-6Al-4V alloy Alloy element partitioning Mechanical properties Corrosion resistance

来源：评论

学校读者我要写书评

暂无评论

Dual nanoprecipitation and nanoscale chemical heterogeneity in a secondary hardening steel for ultrahigh strength and large uniform elongation

引用

Journal of materials science & Technology 2024年第18期185卷 245-258页

作者： Shidong Wang Jinhua Wang Shijie Zhang Daixiu Wei Yang Chen Xuequan Rong Wu Gong Stefanus Harjo Xiaochun Liu Zengbao Jiao Zhigang Yang Gang Sha Chunxu Wang Guang Chen Hao Chen Key Laboratory for Advanced Materials of Ministry of Education School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China School of Materials Science and Engineering/Herbert Gleiter Institute of Nanoscience Nanjing University of Science and TechnologyNanjing 210094China National Key Laboratory of Advanced Casting Technologies MIIT Key Laboratory of Advanced Metallic and Intermetallic Materials TechnologyEngineering Research Center of Materials Behavior and DesignMinistry of EducationNanjing University of Science and TechnologyNanjing 210094China J-PARC Center Japan Atomic Energy AgencyIbaraki 319-1195Japan Institute of Metals College of Materials Science and EngineeringChangsha University of Science&TechnologyChangsha 410114China Department of Mechanical Engineering Research Institute for Advanced ManufacturingThe Hong Kong Polytechnic UniversityHong Kong 999077China Central Iron and Steel Research Institute Beijing 100081China

Nanoprecipitates and nanoscale retained austenite(RA)with suitable stability play crucial roles in deter-mining the yield strength(YS)and ductility of ultrahigh strength steels(UHSSs).However,owing to the kinetics incompatibility between nanoprecipitation and austenite reversion,it is highly challenging to si-multaneously introduce high-density nanoprecipitates and optimized RA in *** this work,through the combination of austenite reversion treatment(ART)and subsequent flash austenitizing(FA),nanoscale chemical heterogeneity was successfully introduced into a low-cost UHSS prior to the aging *** chemical heterogeneity involved the enrichment of Mn and Ni in the austenite *** resulting UHSS exhibited dual-nanoprecipitation of Ni(Al,Mn)and(Mo,Cr)_(2)C and nanoscale austenite stabilized via Mn and Ni *** hard martensitic matrix strengthened by high-density dual-nanoprecipitates con-strains the plastic deformation of soft RA with a relatively low fraction of-15%,and the presence of relatively stable nanoscale RA with adequate Mn and Ni enrichment leads to a marginal loss in YS but keeps a persistent transformation-induced plasticity(TRIP)*** a result,the newly-developed UHSS exhibits an ultrahigh YS of-1.7 GPa,an ultimate tensile strength(UTS)of-1.8 GPa,a large uniform elongation(UE)of-8.5%,and a total elongation(TE)of-13%.The strategy of presetting chemical heterogeneity to introduce proper metastable phases before aging can be extended to other UHSSs and precipitation-hardened alloys.

关键词： Ultrahigh strength steels Dual-nanoprecipitation Austenite stability TRIP effect Phase transformation

来源：评论

学校读者我要写书评

暂无评论

Synergetic Contributions from the Components of Flexible 3D Structured C/Ag/ZnO/CC Anode materials for Lithium-Ion Batteries

引用

Energy & Environmental materials 2023年第6期6卷 227-235页

作者： Huang Xiao Shuangpeng Li Jiaying Zhou Chenyu Zhao Yi Yuan Xiaohong Xia Yuwen Bao Manon Lourenço Kevin Homewood Yun Gao Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and MinistrySchool of Materials Science&EngineeringHubei UniversityWuhan 430062China

Low electronic conductivity and large volume changes during the(de)lithiation process are the two main challenges for ZnO anode materials used for lithium-ion batteries(LIB).Here,a free-standing,flexible,and binder-free LIB electrode composed of ZnO nanorods and carbon cloth(CC)is *** is then decorated with Ag nanoparticles and finally coated by an amorphous carbon layer to form the hybrid electrode:(C@(Ag&ZnO)).The voids among the nanorods are sufficient to accommodate the volume expansion of the ZnO while the flexible CC,which acts as the current collector,relieves the volume change-induced *** Ag nanoparticles are effective in improving the *** composite electrode shows excellent LIB performance with a stable long cycling life over 500 cycles with a reversible capacity of 1093 mAh g^(-1)at a current density of 200 mA g^(-1).It also shows good rate performance with reversible capacity of 517 mAh g^(-1)under a high-current density of 5000 mA g^(-1).In situ Raman spectroscopy is conducted to investigate the contributions of the amorphous carbon layer to the capacity of the whole electrode and the synergy between the CC and ZnO nanorods.

关键词： binder-free in situ Raman spectroscopy lithium-ion batteries ZnO nanorods

来源：评论

学校读者我要写书评

暂无评论

Metal–air batteries: A review on current status and future applications

引用

Progress in Natural science:materials International 2023年第2期33卷 151-171页

作者： Tao Li Meng Huang Xue Bai Yan-Xiang Wang Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education Shandong University School of Materials Science and Engineering Shandong University of Science and Technology

Metal–air batteries(MABs) have been paid much more attention owing to their greater energy density than the most advanced lithium-ion batteries(LIBs). Rechargeable MABs are considered as promising candidates for the next-generation of energy storage techniques for applications ranging from large-scale energy storage systems to electric vehicles and portable devices. However, there are still numerous scientific problems that must be overcome before their commercial application. With the aim of providing a comprehensive understanding of this new electrochemical system particularly Li–air batteries, this review paper provides an overview of the current status including corresponding strategies from the perspective of various battery components, including air cathode,metal anode and electrolyte. In addition, other promising MABs such as Zn–air, Mg–air and Al–air batteries are also introduced briefly for comparison. Finally, the applications and prospects of these four types of MABs are discussed and some perspectives for this research field are also provided.

关键词： Metal–air batteries Air cathode Metal anode Electrocatalyst Electrolyte

来源：评论

学校读者我要写书评

暂无评论

A review on recent progress of non-stoichiometric SiOx anodes based on lithium ion batteries

引用

Progress in Natural science:materials International 2023年第1期33卷 47-54页

作者： Gengchen Yu Jiayi Jing Chengzhe Li Qian Li Zhikai Yang Shuyu Yao Tao Li Xue Bai School of Materials Science and Engineering Shandong University of Science and Technology Key Laboratory for Liquid–Solid Structural Evolution & Processing of Materials(Ministry of Education) Shandong University

SiOxanode has attracted more and more attention due to its rich reserves and high theoretical capacity. However,the disadvantages of low initial Coulombic efficiency and large volume change limit its application. Therefore in this review, the research progress of SiOxanode will be summarized in detailed to demonstrate the various strategies adopted by researchers. Systematically introduction of the progress on preparation methods and modification strategies would be discussed, and the merits and challenges of various approaches will be highlighted as well, which provides valuable insights into the rational design and development of techniques to deal with the promising practical application of SiOxanode.

关键词： Lithium ion batteries SiOx anode Preparation methods Modification strategies

来源：评论

学校读者我要写书评

暂无评论

Difunctional NH_(2)-modified MOF supporting plentiful ion channels and stable LiF-rich SEI construction via organocatalysis for all-solid-state lithium metal batteries

引用

Journal of materials science & Technology 2023年第5期136卷 140-148页

作者： Xuanyi Zhou Chenghan Li Biao Zhang Fenfen Huang Pan Zhou Xinming Wang Zengsheng Ma Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education and School of Materials Science and EngineeringXiangtan UniversityXiangtan 411105China

As an essential part of the performance improvement of lithium metal batteries,the acquisition of dense(LiF-rich solid electrolyte interphase(SEI))has always been an urgent problem to be ***,we synthesized Zeolitic Imidazolate Frameworks(ZIFs)modified by two different functional groups(-NH_(2),-CH_(3))and used them as the fillers of polyethylene oxide(PEO)composite solid electrolytes to explore the catalytic effect of groups on LiF generation at the Li/electrolytes *** a LiFePO 4||SPE||Li cell test,the PEO-ZIF-NH_(2)with LiF-rich SEI exhibits enhanced cycling performance,which was 3.8 times longer than that of PEO-ZIF-CH_(3).The formation mechanism of LiF-rich SEI was investigated using first-principles calculation,revealing that ZIFs-NH_(2)makes the C-F bond in TFSI-longer compared with ZIFs-CH_(3),which leads to easier breakage of the C-F bond and promoted the formation of *** simple design idea of using organic catalysis to generate more stable SEI provides a new aspect for preparing high-performance lithium metal batteries.

关键词： LiF-rich SEI Organic catalysis Functional groups Hydrogen bond Difunctional MOF

来源：评论

学校读者我要写书评

暂无评论

Catalytic effect of carbon-supported NiCoFeCuMg high-entropy alloy nanocatalysts on hydrogen storage properties of MgH_(2)

引用

Journal of Magnesium and Alloys 2025年第3期13卷 1232-1242页

作者： Yafei Liu Mengyuan Yue Yusang Guo Yaru Jiang Yu Sun Lizhuang Feng Yijing Wang Key Laboratory of Advanced Energy Materials Chemistry Ministry of EducationRenewable Energy Conversion and Storage CenterCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)College of ChemistryNankai UniversityTianjin300071PR China

High entropy alloy(HEA)based materials have been extensively investigated as viable catalysts in hydrogen storage for their unique ***,we demonstrate a relatively mild synthesis strategy for constructing carbon-supported by NiCoFeCuMg HEA(NiCoFe-CuMg@C)nanocatalysts by utilizing polymetallic metal-organic frameworks(MOFs)as *** incorporation of prepared catalysts into MgH_(2) greatly improved the hydrogen storage performance:the MgH_(2)+NiCoFeCuMg@C composite can rapidly desorb 6.01 wt%H2 at 325℃,and the initial dehydrogenation temperature decreased to 167.2℃,nearly 163.8℃ lower than that of the pure MgH_(2).Besides,the composite exhibits a fairly stable reversible capacity with 97%capacity retention after 20 *** importantly,ex-situ structural characterization reveals that the synergistic effects of the“hydrogen pump”role of Mg_(2)Ni(Cu)/Mg_(2)Ni(Cu)H_(4) and“hydrogen gateway”role of Co3Fe7,as well as the excellent dispersion function of carbon material,contribute to the outstanding hydrogen storage properties of the MgH_(2)+NiCoFeCuMg@C *** study provides valuable insights into the performance improvement of carbon-supported HEA catalysts in modification of MgH_(2).

关键词： Hydrogen storage Magnesium hydride High entropy alloy Synergistic effect

来源：评论

学校读者我要写书评

暂无评论

Insights into the dual effects of Ti on the grain refinement and mechanical properties of hypoeutectic Al-Si alloys

引用

Journal of materials science & Technology 2024年第22期189卷 44-59页

作者： Ziyuan Zhao Daoxiu Li Xirui Yan Yan Chen Zhe Jia Dongqing Zhang Mengxia Han Xu Wang Guiliang Liu Xiangfa Liu Sida Liu Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationShandong UniversityJinan 250061China Laboratory for Multiscale Mechanics and Medical Science SV LABSchool of AerospaceXi’an Jiaotong UniversityXi’an 710049China School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic MaterialsSoutheast UniversityNanjing 211189China

Hypoeutectic Al-Si alloys are becoming increasingly popular in automotive and aerospace engineering fields due to their excellent overall performance,and grain refinement is regarded as an important way to improve casting and mechanical ***(Ti)is a basic element for grain refinement;thus,a certain amount of Ti is often included in Al-Si *** the present work,the changes in the grain re-finement,mechanical,and casting properties of Al-Si alloys with different Ti concentration levels under various grain refinement conditions were systematically *** specific roles of Ti in the het-erogeneous nucleation ofα-Al grains were summarized,and the formation mechanism of Ti-rich zones in Al-Si alloys was *** Ti concentration could not efficiently reduce the grain size of Al-Si alloys and eventually resulted in inferior mechanical and casting qualities;hence,the recommended Ti concentration level for the aluminum alloy grades of A356 and A357 is≤0.1 wt%.Furthermore,an opti-mized technique for the grain refinement of hypoeutectic Al-Si alloys was presented.A small amount of an Al-TCB master alloy was introduced to achieve the best grain refinement and mechanical properties in a trace Ti *** addition of 0.5 wt%of the Al-TCB master alloy at the Ti concentration level of 0.06 wt%increased the ultimate tensile strength,elongation,and quality index of the Al-7Si-0.45Mg alloy to 328.8±5.0 MPa,14.4%±0.6%,and 970.7±33.1 MPa,respectively.

关键词： Al-Si alloy Titanium Microstructure Grain refinement Mechanical properties

来源：评论

学校读者我要写书评

暂无评论

Zeolite-encaged mononuclear copper centers catalyze CO2 selective hydrogenation to methanol

引用

National science Review 2023年第7期10卷 134-141页

作者： Yuchao Chai Bin Qin Bonan Li Weili Dai Guangjun Wu Naijia Guan Landong Li Key Laboratory of Advanced Energy Materials Chemistry of Ministry of Education College of Chemistry Nankai University CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences School of Materials Science and Engineering Nankai University

The selective hydrogenation of CO2to methanol by renewable hydrogen source represents an attractive route for CO2recycling and is carbon *** catalysts with high activity and methanol selectivity are being vigorously pursued,and current debates on the active site and reaction pathway need to be ***,we report a design of faujasite-encaged mononuclear Cu centers,namely Cu@FAU,for this challenging *** methanol space-time-yield（STY） of 12.8 mmol gcat-1h-1and methanol selectivity of 89.5% are simultaneously achieved at a relatively low reaction temperature of 513 K,making Cu@FAU a potential methanol synthesis catalyst from *** zeolite-encaged mononuclear Cu centers as the destined active sites,the unique reaction pathway of stepwise CO2hydrogenation over Cu@FAU is *** work provides a clear example of catalytic reaction with explicit structure-activity relationship and highlights the power of zeolite catalysis in complex chemical transformations.

关键词： CO2 hydrogenation zeolite methanol catalysis mononuclear copper

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：