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Journal of materials science & technology 2023年第35期166卷 113-122页

作者： z.G.Tai G.T.Sun X.H.zhang X.B.Yang T.wang z.Y.Fang Q.Ye l.C.Jia H.Q.wang State Key laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Research&Development institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063China school of materials science and engineering Shaanxi Normal UniversityXi’an 710119China

To suppress the inner charge recombination and inject vast electrons,CdTe nanocrystals are embedded into ultrathin znIn_(2)S_(4) nanosheets to construct znIn_(2)S_(4)/CdTe heterostructures,where the nanocrystals are generated by a laser irradiation *** optimal znIn_(2)S_(4)/CdTe heterojunction exhibits an excellent catalytic activity of 24.3 mmol/h/g,which is relatively high among the znIn_(2)S_(4)-based photocatalysts with-out noble *** enhancement is ascribed to a win-win mechanism of nanoscale heterojunctions and sulfur *** strong electron coupling effect,which is verified by density functional the-ory(DFT)calculations,impels the photo-generated electrons transfer from CdTe to znIn_(2)S_(4),boosting the charge ***,the sulfur vacancies existing in znIn_(2)S_(4) can capture photoelectrons and act as active sites,facilitating the H_(2) generation *** addition,the znIn_(2)S_(4) base and the znIn_(2)S_(4)/CdTe heterojunction also possess an evident photothermal effect and renewable cycle phenomena,enhancing the photocatalytic *** research provides new insights into the regulation of charge transfer through embedding nanocrystals.

关键词： Photocatalysis Hydrogen evolution laser irradiation Heterostructure Sulfur vacancies

eFFeCTS OF TReATMeNT TeMPeRATURe ON THe MICROSTRUCTURe AND MAGNeTIC PROPeRTIeS OF Fe-N THIN FIlMS

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Acta Metallurgica Sinica(english letters) 2007年第4期20卷 293-300页

作者： B.l. li H.M. Du X.F. wang e.Y. Jiang z.Q.li P. Wu Department of Applied Physics Institute of Advanced Materials Physics School of Science Tianjin University Tianjin 300072 China Tianjin Key laboratory of low Dimensional materials Physics and Preparing technology Tianjin University Tianjin 300072 China

Fe-N thin films were fabricated on both 100Si and NaCl substrates by RF magnetron sputtering under low nitrogen partial pressure. The microstructure and magnetic properties of Fe-N thin films were investigated with the increase of the substrate temperature （Ts） and the annealing temperature （Ta）. It is more difficult for nitrogen atoms to enter the Fe lattice under higher Ts above 150℃. The phase evolution is visible at higher Ta above 200℃. The phase transformation of α＇＇-Fe16N2 occurred at 400℃. The change of crystal size with Ta was clearly visible from bright and dark field images. The clear high-resolution electron microscope （HReM） images of 110α, 111γ＇, 112α＇＇, and 200α＇＇ phases were observed. The interplanar distances from TeM （transmission electron microscope） and HReM match the calculated values very well. From the results of the vibrating sample magnetometer （VSM）, the good magnetic properties of Fe-N films were obtained at 150℃ of Ts and 200℃ of Ta, respectively.

关键词： Fe-N thin film magnetic property HReM α''-Fe16N2

Microstructural evolution of aluminum alloy during friction stir welding under different tool rotation rates and cooling conditions

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Journal of materials science & technology 2019年第6期35卷 972-981页

作者： X.H. zeng P. Xue l.H. Wu D.R. Ni B.l. Xiao K.S. wang z.Y. Ma Shenyang National laboratory for materials science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China University of Chinese Academy of sciences Beijing 100049 China school of Metallurgical engineering Xi'an University of Architecture and Technology Xi'an 710055 China

The microstructural evolution during friction stir welding(FSW) has long been studied only using one single welding parameter. Conclusions were usually made based on the final microstructure observation and hence were one-sided. In this study, we used the "take-action" technique to freeze the microstructure of an Al-Mg-Si alloy during FSW, and then systematically investigated the microstructures along the material flow path under different tool rotation rates and cooling conditions. A universal characteristic of the microstructural evolution including four stages was identified, i.e. dynamic recovery(DRV), dislocation multiplication, new grain formation and grain growth. However, the dynamic recrystallization(DRX)mechanisms in FSW depended on the welding condition. For the air cooling condition, the DRX mechanisms were related to continuous DRX associated with subgrain rotation and geometric DRX at high and low rotation rates, respectively. Under the water cooling condition, we found a new DRX mechanism associated with the progressive lattice rotation resulting from the pinning of the second-phase *** on the analyses of the influencing factors of grain refinement, it was clearly demonstrated that the delay of DRV and DRX was the efficient method to refine the grains during FSW. Besides, ultra-high strain rate and a short duration at high temperatures were the key factors to produce an ultrafine-grained material.

关键词： Aluminum alloys Grain refinement Dynamic recrystallization Severe plastic deformation Friction stir welding

Simultaneous high-resolution x-ray backlighting and self-emission imaging for laser-produced plasma diagnostics using a two-energy multilayer Kirkpatrick–Baez microscope

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Matter and Radiation at extremes 2022年第1期7卷 47-52页

作者： S.z.Yi J.Q.Dong l.Jiang Q.S.Huang e.F.Guo wang z.S. MOe Key laboratory of Advanced Micro-Structured materials No.1239 Siping RoadShanghai 200092China school of Physics science and engineering Tongji UniversityShanghai 200092China Shanghai institute of laser Plasma CAEPP.O.Box 919-988Shanghai 201800China

A simultaneous high-resolution x-ray backlighting and self-emission imaging method for laser-produced plasma diagnostics is developed in which two Kirkpatrick–Baez imaging channels for high-energy and low-energy diagnostics are constructed using a combination of multilayer mirrors in near-coaxial *** using a streak or framing camera placed on the image plane,both backlit and self-emission images of a laserproduced plasma with high spatial and temporal resolution can be obtained simultaneously in a single *** paper describes the details of the method with regard to its optical and multilayer design,assembly,and alignment *** addition,x-ray imaging results with a spatial resolution better than 5μm in the laboratory and experimental results with imploding capsules in the SG-III prototype laser facility are presented.

关键词： method. multilayer resolution

Anisotropic electroplastic effects on the Mechanical Properties of a Nano-lamellar Austenitic Stainless Steel

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Acta Metallurgica Sinica(english letters) 2021年第4期34卷 534-542页

作者： Y.R.Ma H.J.Yang D.D.Ben X.H.Shao Y.z.Tian Q.wang z.F.zhang Shi-changxu Innovation Center for Advanced materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China school of materials science and engineering University of Sciences and Technology of ChinaHefei230026China Shenyang National laboratory of materials science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Key laboratory for Anisotropy and Texture of materials(Ministry of education) School of Materials Science and EngineeringNortheastern UniversityShenyang110016China

effects of electropulsing treatment(ePT)on the microstructural evolution and mechanical properties of a cold-rolled 316 l austenitic stainless steel with nano-lamellar structure were *** ePT experiments were carried out with the electric current direction along the rolling direction(RD)and the transverse direction(TD)of the samples,*** anisotropic electroplastic effects for the RD and TD specimens,i.e.,reduced hardness/strength and enhanced ductility,were obtained owing to the different recrystallization behaviors of the RD and TD specimens during *** RD specimens after ePT with larger recrystallized grain size and higher volume fraction of recrystallization show lower strength and higher elongation than that of the TD *** main reason might be attributed to the change of the current direction in the two kinds of samples,which results in the different sensitivity of the microstructures to thermal and athermal effects during ePT.

关键词： Stainless steel electroplastic effect electropulsing Recrystallization Anisotropy Strength Plasticity

Further investigation on the fusion of ^(6)li with ^(209)Bi target at near-barrier energies

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Chinese Physics C 2024年第7期48卷 106-117页

作者：张高龙焦振威张广鑫 M.R.Cortes 胡世鹏钱建强 D.Mengoni 屈卫卫李聪博郑云张焕乔孙慧斌王楠张春雷 J.J.Valiente-Dobón D.Testov M.Mazzocco A.Gozz.l.no C.Parascandolo D.Pierroutsakou M.la Commara A.Goasduff D.Bazzacco D.R.Napoli F.galtarossa F.Recchia A.Illana S.Bakes I.zanon S.Aydin G.de Angelis M.Siciliano R.Menegazzo S.M.lenzi J.l.Ferreira J.Rangel Serkan Akkoyun l.F.Canto J.lubian school of Physics Beihang UniversityBeijing 100191China Sino-French institute of Nuclear engineering and technology Sun Yat-Sen UniversityZhuhai 519082China Instituto de Física Universidade Federal Fluminense24210-340NiteróiRio de JaneiroBrazil institute for Advanced Study in Nuclear energy&Safety Shenzhen UniversityShenzhen 518060China Shenzhen Key laboratory of Research and Manufacture of High Purity Germanium materials and Fetectors Shenzhen UniversityShenzhen 518060China INFN Sezione di PadovaPadovaItaly Dipartimento di fisica Astronomia dell'Universita di padova PadovaItaly State Key laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China China institute of Atomic energy Beijing 102413China The Key laboratory of Beam technology and Material Modification of Ministry of education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China INFN Laboratori Nazionali di LegnaroI-35020 LegnaroItaly INFN Sezione di NapoliI-80126 NapoliItaly Dipartimento di Farmacia Universitàdi Napoli"Federico II"I-80131 NapoliItaly Department of Natural and Mathematical sciences Faculty of EngineeringTarsus University33480 MersinTurkiye Physics Division Argonne National LaboratoryLemont-ILUSA Departamento de Matemaética Física e Computaç˜ao Universidade do Estado do Rio de JaneiroFaculdade de Tecnologia27537-000ResendeRio de JaneiroBrazil Department of Physics Sivas Cumhuriyet UniversitySivasTurkey Instituto de Física Universidade Federal do Rio de JaneiroCP 6852821941-972Rio de JaneiroBrazil

The complete and incomplete fusion cross sections for ^(6)li+^(209)Bi were measured using the in-beamγ-ray method around the Coulomb *** cross sections of(deuteron captured)incomplete fusion(ICF)products were re-quantified experimentally for this reaction *** results reveal that the ICF cross section is equivalent to that of complete fusion(CF)above the Coulomb barrier and dominant near or below the Coulomb barrier.A theoretical calculation based on the continuum discretized coupled channel(CDCC)method was performed for the aforementioned CF and ICF cross sections;the result is consistent with the *** universal fusion function(UFF)was also compared with the measured CF cross section for different barrier parameters,demonstrating that the CF suppression factor is significantly influenced by the choice of potential,which can reflect both dynamic and static effects of breakup on the fusion process.

关键词： cross section incomplete fusion suppression factor weakly bound nuclei

Synthesis, Optical Properties and Photovoltaic Application of the SnS Quasi-one-dimensional Nanostructures

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Nano-Micro letters 2013年第1期5卷 1-6页

作者： M.X.wang G.H.Yue Y.D.lin X.Wen D.l.Peng z.R.Geng Department of materials science and engineering Fujian Key Laboratory of Advanced MaterialsXiamen University Department of materials engineering Lanzhou Institute of Technology school of Mechatronic engineering Lanzhou Jiao Tong University

low-toxicity single crystal Sn S nanowires had been successfully synthesized by the catalystassistant chemical vapor deposition. Au nanoparticles were applied on the ITO surface as the catalysis, using Sn S powder and S powder as forerunners. The structure, morphology and optical properties of the prepared Sn S nanowires were characterized. The experimental results show the as-synthesized nanowires are single crystalline with a preferential orientation. The synthesized Sn S nanowires show strong absorption in the visible and nearinfrared spectral region, and the direct energy band gap of Sn S nanowires is 1.46 e V.

关键词： Nanostructure Chemical vapor deposition Crystal growth Optical property

Transfer or blockage:Unraveling the interaction between deformation twinning and grain boundary in tantalum under shock loading with molecular dynamics

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Journal of materials science & technology 2023年第25期156卷 118-128页

作者： z.C.Meng M.M.Yang A.H.Feng S.J.Qu F.zhao l.Yang J.H.Yao Y.Yang Q.B.Fan H.wang Interdisciplinary Centre for Additive Manufacturing (ICAM) School of Materials and ChemistryUniversity of Shanghai for Science and TechnologyShanghai 200093China institute of Metal Research Chinese Academy of SciencesShenyang 110016China school of materials science and engineering University of Science and Technology of ChinaShenyang 110016China school of materials science and engineering Tongji UniversityShanghai 201804China Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen 518055China National Key laboratory of science and technology on materials Under Shock and Impact School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing institute of technology Chongqing Innovation Center Chongqing 401135China

The interaction between{112}deformation twinning and grain boundary in coaxial polycrystalline tantalum under shock compression was studied with molecular dynamics simulation under different grain pair misorientation angles(MA)and geometric compatibility factor(m’).Generally,in the coaxial polycrystal,the value of MA determines the occurrence of twin transfer(TT)or twin blockage(TB),i.e.,twin transfer occurs at MA≤29°with twin blockage *** TT,the value of m’affects the selection of twin variants.,i.e.,the twin system with a larger m’is easier to *** morphology of twin pairs is ruler-shaped and lenticular under TT and TB,respectively,with different thickening mechanisms,including grain boundary dislocation emission.

关键词： Plasticity Grain boundary Twin Atomistic simulation Tantalum

PeRSPeCTIVeS IN MeCHANICS OF HeTeROGeNeOUS SOlIDS

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Acta Mechanica Solida Sinica 2011年第1期24卷 1-26页

作者： C.Q. Chen J.z. Cui H.l. Duan X.Q. Feng l.H. He G.K. Hu M.J. Huang Y.z. Huo B.H. Ji B. liu X.H. Peng H.J. Shi Q.P. Sun J.X. wang Y.S. wang H.P. zhao Y.P. zhao Q.S. zheng W.N. zou Department of engineering Mechanics AML Tsinghua University Beijing 100084 China Academy of Mathematics and Systems sciences Chinese Academy of Sciences Beijing 100190 China State Key laboratory for Turbulence and Complex System and Department of Mechanics and Aerospace engineering College of Engineering Peking University Beijing 100871 China CAS Key laboratory of Mechanical Behavior and Design of materials University of Science and Technology of China Hefei Anhui 230026 China school of Aerospace engineering Beijing Institute of Technology Beijing 100081 China institute for Advanced Study Nanchang University Nanchang 330031 China Depariment of Mechanics and engineering sciences Fudan University 220 Handa Road Shanghai 200433 China Department of Mechanical engineering Hong Kong University of Science and Technology Hong KongChina Department of Mechanical engineering Hong Kong University of Science and Technology Hong Kong China institute of engineering Mechanics Beijing Jiaotong University Beijing 100044 China State Key laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China

The Micro- and Nano-mechanics Working Group of the Chinese Society of Theoretical and Applied Mechanics organized a forum to discuss the perspectives, trends, and directions in mechanics of heterogeneous materials in January 2010. The international journal, Acta Mechanica Solida Sinica, is de- voted to all fields of solid mechanics and relevant disciplines in science, technology, and engineering, with a balanced coverage on analytical, experimental, numerical and applied investigations. On the occasion of the 30TM anniversary of Acta Mechanica Solida Sinica, its editor-in-chief, Professor Q.S. zheng invited some of the forum participants to review the state-of-the-art of mechanics of heterogeneous solids, with a particular emphasis on the recent research development results of Chinese scientists. Their reviews are organized into five research areas as reported in different sections of this paper. ~I firstly brings in fo- cus on micro- and nano-mechanics, with regards to several selective topics, including multiscale coupled models and computational methods, nanocrystal superlattices, surface effects, micromechanical damage mechanics, and microstructural evolution of metals and shape memory alloys. ~II shows discussions on multifield coupled mechanical phenomena, e.g., multi-fields actuations of liquid crystal polymer networks, mechanical behavior of materials under radiations, and micromechanics of heterogeneous materials. In ~III, we mainly address the multiscale mechanics of biological nanocomposites, biological adhesive surface mechanics, wetting and dewetting phenomena on microstructured solid surfaces. The phononic crystals and manipulation of elastic waves were elaborated in ~IV. Finally, we conclude with a series of perspectives on solid mechanics. This review will set a primary goal of future science research and engineering application on solid mechanics with the effort of social and economic development.

关键词： heterogeneous materials smart materials biological materials multiscale mechanics micro- and nano-mechanics damage and fracture constitutive relation elastic wave surface effects

Freestanding strontium vanadate/carbon nanotube films for long-life aqueous zinc-ion batteries

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Rare Metals 2022年第2期41卷 415-424页

作者： Ye-Hong Du Xian-Yu liu Xin-Yu wang Jun-Cai Sun Qiong-Qiong lu Jian-zhi wang Ahmad Omar Daria Mikhailova institute of materials and technology Dalian Maritime UniversityDalian 116026China e-mail:wangxinyu@*** school of Chemistry and Chemical engineering Lanzhou City UniversityLanzhou 730070China leibniz institute for Solid State and materials Research(IFW)Dresden e.V Helmholtzstraße 2001069 DresdenGermany e-mail:q.lu@ifw-dresden.de Key laboratory for Green Chemical Process of Ministry of education School of Chemical Engineering and PharmacyWuhan Institute of TechnologyWuhan 430205China

Aqueous rechargeable zinc-ion battery(zIB)is considered to be a potential energy storage system for large-scale applications due to its environmental friendliness,high safety,and low ***,it remains challenging to develop suitable cathode materials with high specific capacity and long-term cyclic ***,we have fabricated freestanding Sr0.19V2O51.3H2O/carbon nanotubes(SrVO/CNTs)composite films with different mass ratios by incorporating SrVO into CNTs *** synthesized SrVO possesses a large interlayer spacing of 1.31 nm,which facilitates zn(2+)***,the SrVO/CNTs composite film with conductive network structure promotes electron transfer and ensures good contact between SrVO and CNTs during the long-term cycling *** a result,the battery based on the SrVO/CNTs composite cathode with a mass ratio of 7:3 delivers a specific capacity of 326 mAh·g^(-1)at 0.1 A·g^(-1)and 145 mAh·g^(-1)at 5 A·g^(-1),demonstrating a high capacity and excellent rate ***,the assembled zIB shows good capacity retention of 91%even after ultra-long cycling for 7500 cycles at a high current rate of 5 Ag^(-1).More importantly,the battery also delivers a high energy density and power density,as 290 Wh·kg^(-1)at 125 W·kg^(-1)(0.1 A·g^(-1)),or 115 Wh·kg^(-1)at 6078 W·kg^(-1)(5 Ag^(-1)).The results demonstrate that the SrVO/CNTs composite is a promising cathode toward large-scale energy storage applications.

关键词： Aqueous zinc-ion battery Strontium vanadate Carbon nanotubes network Freestanding composite film long cycle life