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Nanoscopic tribological characteristics of a cryogenically cycled Zr-based metallic glass

Science China(Physics,Mechanics & Astronomy) 2024年第6期67卷 113-126页

作者： Qian Jia Qiaosheng Xia Qing Zhou Yucheng Wang Yue Ren Yu Meng Haifeng Wang Feng Zhou State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi’an 710072China Shaanxi Key Laboratory of Surface Engineering and Remanufacturing Xi’an UniversityXi’an 710065China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

Optimized macroscopic tribological behavior can be anticipated in metallic glasses(MGs)by cryogenic cycling treatment(CCT),which is attributed to enhanced ***,the intrinsic friction mechanisms of MGs induced by cryogenic rejuvenation are still poorly *** the present study,nanoscopic wear tests were conducted on the Zr-based MGs surface with different CCT cycles using atomic force microscopy(AFM).After CCT treatment with 100 cycles,the MG displays the highest adhesion and ploughing frictions,but significantly improved anti-wear *** tests and molecular dynamics simulations disclose that the increased adhesion is attributed to the dominance of liquid-like regions in the CCT-treated MGs,and the impact of reduced hardness and weak elastic recovery results in the deteriorated ploughing *** enhanced plasticity effectively dissipates the strain from the AFM tip through multiple shear bands and weakens the adhesion during deformation,giving rise to excellent wear *** study elucidates the promoting effect of CCT on the outstanding antiwear performance of MGs,and is helpful for the development of novel alloys.

关键词： metallic glasses cryogenic cycling treatment nanoscope wear friction mechanism

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Tuning the reversible chemisorption of hydroxyl ions to promote the electrocatalysis on ultrathin metal-organic framework nanosheets

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Journal of Energy Chemistry 2022年第2期31卷 71-77页

作者： Hong Yu Yao Jing Cheng-Feng Du Jiong Wang State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi’an 710072ShaanxiChina Institute of Advanced Synthesis Northwestern Polytechnical UniversityXi’an 710072ShaanxiChina

Interfacial engineering to alter the configuration of active sites in heterogeneous catalysts is a potential strategy for activity enhancement,but it remains unelucidated for metal-organic frameworks(MOFs).Here,we demonstrate that the surface of two-dimensional Co-based MOF is modified by decorating Ag quantum dots(QDs)simply through in-situ reduction of Ag+*** oxygen evolution reaction(OER),it reveals that the catalysis is mediated by the reversible redox of Co sites between Co^(3+) and Co^(4+) states coupling with transfer of OH*** decoration of Ag QDs decreases the redox potential of Co sites,and thus effectively decreases the overpotential of *** TOFs of Co sites are increased by 77 times to reach 5.4 s^(-1) at an overpotential of 0.35 *** attribute the activity enhancement to the tuning of the coupling process between Co sites and OHions during the redox of Co sites by Ag QDs decoration based on Pourbaix analysis.

关键词： 2D metal-organic frameworks Interfacial engineering Pourbaix analysis Chemisorption of hydroxyl ions Oxygen evolution reaction

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Atomic layer deposition in advanced display technologies:from photoluminescence to encapsulation

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International Journal of Extreme Manufacturing 2024年第2期6卷 65-82页

作者： Rong Chen Kun Cao Yanwei Wen Fan Yang Jian Wang Xiao Liu Bin Shan State Key Laboratory of Intelligent Manufacturing Equipment and Technology School of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiPeople’s Republic of China State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiPeople’s Republic of China

Driven by the growing demand for next-generation displays,the development of advanced luminescent materials with exceptional photoelectric properties is rapidly accelerating,with such materials including quantum dots and phosphors,***,the primary challenge preventing the practical application of these luminescent materials lies in meeting the required durability *** layer deposition(ALD)has,therefore,been employed to stabilize luminescent materials,and as a result,flexible display devices have been fabricated through material modification,surface and interface engineering,encapsulation,cross-scale manufacturing,and *** addition,the appropriate equipment has been developed for both spatial ALD and fluidized ALD to satisfy the low-cost,high-efficiency,and high-reliability manufacturing *** strategic approach establishes the groundwork for the development of ultra-stable luminescent materials,highly efficient light-emitting diodes(LEDs),and thin-film ***,this significantly enhances their potential applicability in LED illumination and backlighted displays,marking a notable advancement in the display industry.

关键词： atomic layer deposition display luminescent encapsulation

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Discovery of aluminum alloys with ultra-strength and high-toughness via a property-oriented design strategy

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Journal of materials Science & technology 2022年第3期98卷 33-43页

作者： Lei Jiang Changsheng Wang Huadong Fu Jie Shen Zhihao Zhang Jianxin Xie Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Key Laboratory for Advanced Materials Processing(MOE) University of Science and Technology BeijingBeijing 100083China

Aluminum alloys with ultra-strength and high-toughness are fundamental structural materials applied in the aerospace *** to the intrinsic restriction between strength and toughness,optimizing a desirable combination of these conflicting properties is always challenging in material *** this study,171 sets of data were curated based on the characteristics of high-strength and high-toughness aluminum alloys in the ***,a machine learning design system(MLDS)with a property-oriented design strategy was established to rapidly discover novel aluminum alloys with ductility and toughness indexes(with elongationδ=8%–10%and fracture toughness K_(IC)=33–35 MPa·m^(1/2))comparable to those of current state-of-the-art AA7136 aluminum alloys when the ultimate tensile strength(UTS)exceeded approximately 100 MPa,with values reaching 700–750 *** the MLDS for experimental verification,three typical candidate alloys show satisfactory performance with UTS of 707–736 MPa,δof 7.8%–9.5%,and K_(IC)of 32.2–33.9 MPa·m^(1/2).The high contents of Mg and Zn alloying elements in the novel alloys form abundantη'phases,which produce a significant hardening effect,while the reasonable matching of Cr,Mn,Ti and Zr dispersoids refines the grain *** decreased Cu content compared with that in the AA7136 alloy inhibits the formation of theσphase and S phase,so that the alloys show high toughness.

关键词： Aluminum alloy Machine learning Composition design Hardening mechanism Toughness

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Understanding interfacial engineering of surface functionalized boron nitride nanosheets within thermal interface materials

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Science China materials 2025年第4期68卷 1300-1302页

作者： Gaojie Han Yuezhan Fengg Changyu Shen State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China

The continuous miniaturization and high-power development of electronic devices have given rise to severe interface thermal issues,which urgently demand highly thermally conductive thermal interface materials(TIMs)to ... 详细信息

关键词： interfacial engineering heat accumulation interface thermal issueswhich thermal interface materials surface functionalized boron nitride nanosheets electronic devices thermal conductivity

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Metallized polymer current collector as“stress acceptor”for stable micron-sized silicon anodes

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Journal of Energy Chemistry 2025年第2期101卷 786-794,I0017页

作者： Ziyi Cao Haoteng Sun Yi Zhang Lixia Yuan Yaqi Liao Haijin Ji Shuaipeng Hao Zhen Li Long Qie Yunhui Huang State Key Laboratory of Material Processing and Die&Mold Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina Department of Chemistry Brown UniversityProvidence RI 02912United States

Micron-sized silicon(μSi)is a promising anode material for next-generation lithium-ion batteries due to its high specific capacity,low cost,and abundant ***,the volume expansion that occurs during cycling leads to the accumulation of undesirable stresses,resulting in pulverization of silicon microparticles and shortened lifespan of the ***,a composite film of Cu-PET-Cu is proposed as the current collector(CC)forμSi anodes to replace the conventional Cu ***-PET-Cu CC is prepared by depositing Cu on both sides of a polyethylene terephthalate(PET)*** PET layer promises good ductility of the film,permitting the Cu-PET-Cu CC to accommodate the volumetric changes of silicon microparticles and facilitates the stress release through ductile *** a result,theμSi electrode with Cu-PET-Cu CC retains a high specific capacity of 2181 mA h g^(-1),whereas theμSi electrode with Cu CC(μSi/Cu)exhibits a specific capacity of 1285 mA h g^(-1)after 80 *** stress relieving effect of CuPET-Cu was demonstrated by in-situ fiber optic stress monitoring and multi-physics *** work proposes an effective stress relief strategy at the electrode level for the practical implementation ofμSi anodes.

关键词： Micron-sized Si anodes Metallized polymer current collector Stress relieving Electrode design

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Design and fabrication of high-performance injectable self-setting trimagnesium phosphate

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Bioactive materials 2023年第10期28卷 348-357页

作者： Jiawei Liu Wen Hou Wenying Wei Jian Peng Xiaopei Wu Chenxi Lian Yanan Zhao Rong Tu Takashi Goto Honglian Dai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of TechnologyWuhan 430070China Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory Chaozhou 521000China New Industry Creation Hatchery Center Tohoku UniversitySendai 980-8579Japan

Magnesium phosphate bone cement has become a widely used orthopedic implant due to the advantages of fast-setting and high early strength. However, developing magnesium phosphate cement possessing applicable injectability, high strength, and biocompatibility simultaneously remains a significant challenge. Herein, we propose a strategy to develop high-performance bone cement and establish a trimagnesium phosphate cement (TMPC) system. The TMPC exhibits high early strength, low curing temperature, neutral pH, and excellent injectability, overcoming the critical limitations of recently studied magnesium phosphate cement. By monitoring the hydration pH value and electroconductivity, we demonstrate that the magnesium-to-phosphate ratio could manipulate the components of hydration products and their transformation by adjusting the pH of the system, which will influence the hydration speed. Further, the ratio could regulate the hydration network and the properties of TMPC. Moreover, in vitro studies show that TMPC has outstanding biocompatibility and bone-filling capacity. The facile preparation properties and these advantages of TMPC render it a potential clinical alternative to polymethylmethacrylate and calcium phosphate bone cement. This study will contribute to the rational design of high-performance bone cement.

关键词： Bone cement Trimagnesium phosphate High compressive strength Injectable Bioactive materials

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A short review on the role of alloying elements in duplex stainless steels

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Tungsten 2023年第4期5卷 419-439页

作者： Ying Han Zheng-Hong Liu Chun-Bo Wu Yu Zhao Guo-Qing Zu Wei-Wei Zhu Xu Ran Key Laboratory of Advanced Structural Materials Ministry of EducationChangchun University of TechnologyChangchun130012China School of Materials Science and Engineering Changchun University of TechnologyChangchun130012China Jilin Province Key Laboratory of Advanced Materials Processing and Application for Rail Transit Changchun University of TechnologyChangchun130012China

Duplex stainless steels consisting of ferrite and austenite are widely used due to their excellent mechanical properties and corrosion *** with ferritic stainless steels,duplex stainless steels have better plasticity,toughness,and welding *** also possess higher strength and better resistance to stress,pitting,and crevice corrosion than austenitic stainless *** addition to the above-mentioned properties,there are cost-saving advantages in duplex stainless steels due to their lower nickel ***,the types of duplex stainless steel are mainly divided into four categories:lean duplex stainless steel,standard duplex stainless steel,super duplex stainless steel,and hyper duplex stainless *** design of duplex stainless steel is an important strategy to achieve high *** the last two decades,significant progress has been made in both theoretical calculations and *** adjusting alloying elements such as chromium,nickel,molybdenum,nitrogen,copper,tungsten and rare earth,etc.,the mechanical properties and/or corrosion resistance of the duplex stainless steels can be further *** the comprehensive progress of alloying design of duplex stainless steel is of great significance in providing a data basis for establishing the corresponding relationship between chemical compositions and ***,this paper reveals the specific roles of alloying elements in the duplex stainless steels and provides a reference for alloying design with different performance requirements.

关键词： Duplex stainless steel Chemical component Alloying Mechanical property Corrosion resistance

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Advances in colored carbon-based fiber materials and their emerging applications

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SusMat 2024年第6期4卷 191-223页

作者： Yu Zhang Yuxin Luo Mengqi Wang Tonghe Xing Annan He Zhiyu Huang Zhicheng Shi Sijie Qiao Aixin Tong Jie Bai Shichao Zhao Fengxiang Chen Weilin Xu State Key Laboratory of New Textile Materials and Advanced Processing Technologies Hubei Key Laboratory of Digital Textile Equipment and National Local Joint Laboratory for Advanced Textile Processing and Clean ProductionWuhan Textile UniversityWuhanChina College of Textiles and Clothing Qingdao UniversityQingdaoChina China Textile Engineering Society BeijingChina State Key Laboratory of Coal Conversion CAS Key Laboratory of Carbon Materials and Analytical Instrumentation CenterInstitute of Coal ChemistryChinese Academy of SciencesTaiyuanChina

Carbon-based fiber materials are widely used in aerospace,military,and electronics owing to their outstanding comprehensive ***,the high degree of crystallization and chemical inertness of their surfaces impede the coloring of such materials by traditional dyeing methods,thereby limiting their application in a broader *** advanced micro/nano-processing technology for colored carbon-based fiber materials has become a growing interdisciplinary research area in recent ***,this review comprehensively discusses the structure‒color‒function relationships of carbon-based fiber *** structure of carbon-based fiber materials and their properties responsible for challenges in coloring by traditional dyeing methods are ***,the color-generating mechanisms underlying the display of structural colors by living organisms due to fundamental optical phenomena,including thin/multilayer-film interference,diffraction grating,scattering,and photonic crystals,are ***,recent progress in bio-inspirated colored carbon-based fiber materials prepared via advanced micro/nanoscale manufacturing strategies is *** addition,emerging applications of colored carbon-based fiber materials in various fields are ***,the possible challenges and future directions for the design,large-scale production,and application of colored carbon-based fibermaterials and their composites are discussed,aiming to promote the material design of innovative next-generation systems and research in the advanced material and related engineering fields.

关键词： bio-inspire structural color colored carbon-based fiber materials emerging applications micro/nanoscale manufacturing strategies

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Superior strength-plasticity synergy in a heterogeneous lamellar Ti_(2)AlC/TiAl composite with unique interfacial microstructure

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Journal of materials Science & technology 2023年第28期159卷 21-32页

作者： Pei Liu Bo Hou Aiqin Wang Jingpei Xie Zhenbo Wang Feng Ye College of Materials Science and Engineering Henan University of Science and TechnologyLuoyang 471023China Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology Luoyang 471023China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China

Improving the plasticity of TiAl alloys at room temperature has been a longstanding challenge for the de-velopment of next-generation aerospace *** adopting the nacre-like architecture design strategy,we have obtained a novel heterogeneous lamellar Ti_(2)AlC/TiAl composite with superior strength-plasticity synergy,i.e.,compressive strength of∼2065 MPa and fracture strain of∼27%.A combination of micropil-lar compression and large-scale atomistic simulation has revealed that the superior strength-plasticity synergy is attributed to the collaboration of Ti_(2)AlC reinforcement,lamellar architecture and heteroge-neous *** specifically,multiple deformation modes in Ti_(2)AlC,i.e.,basal-plane dislocations,atomic-scale ripples and kink bands,could be activated during the compression,thus promoting the plas-tic deformation capability of ***,the lamellar architecture could not only induce sig-nificant stress redistribution and crack deflection between Ti_(2)AlC and TiAl,but also generate high-density SFs and DTs interactions in TiAl,leading to an improved strength and strain hardening *** addi-tion,profuse unique Ti_(2)AlC(1¯10¯3)/TiAl(111)interfaces in the composite could dramatically contribute to the strength and plasticity due to the interface-mediated dislocation nucleation and obstruction *** findings offer a promising paradigm for tailoring microstructure of TiAl matrix composites with extraordinary strength and plasticity at ambient temperature.

关键词： Ti_(2)AlC/TiAl composite Heterogeneous lamellar microstructure Micropillar compression Interface-mediated deformation Strength-plasticity synergy

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