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Journal of Materials science & Technology 2011年第1期27卷 15-21页

作者： h.s. liu B. Zhang G.P. Zhang shenyang National Laboratory for Materials science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Key Laboratory for Anisotropy and Texture of Materials of Ministry of Education School of Materials & Metallurgy Northeastern University Shenyang 110004 China

Al/Mg alloy multilayered composites were produced successfully at the lower temperature（280 C） by accumulative roll bonding（ARB） processing *** microstructures of Al and Mg alloy layers were characterized by scanning electron microscopy and transmission electron *** hardness and three-point bending tests were conducted to investigate mechanical properties of the *** is found that Vickers hardness,bending strength and stiffness modulus of the Al/Mg alloy multilayered composite increase with increasing the ARB *** and crack propagation along the interface are the two main failure modes of the multilayered composite subjected to bending *** and fracture mechanisms of the composite are analyzed.

关键词： Accumulative roll bonding(ARB) Al/Mg alloy multilayered composite Ultra-fine grains hardness Bending properties

First-principles Calculation Assisted Thermodynamic Modeling of Ti-Co-Cu Ternary system

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Journal of Materials science & Technology 2010年第4期26卷 317-326页

作者： Y.J. Yang X.M. Tao W.J. Zhu Z.h. Long h.s. liu Z.P. Jin school of Materials science and Engineering Central South University Changsha 410083 China Key Lab of Non-ferrous Metal science and Engineering Ministry of Education Changsha 410081 China

Thermodynamic assessment of Ti-Co-Cu ternary system h.s.been carried out by combining first-principle calculation and CALPhAD method. Firstly, formation enthalpies of stable and hypoth.s.zed compounds were calculated by first-principles method. Then, based on reported experimental information, a thermodynamic description of the Ti-Co-Cu ternary system was performed. solution ph.s.s were treated as substitutional solutions of which excess Gibbs energies were formulated by Redlich-Kister polynomial, and the intermediate ph.s.s were described with.s.blattice models. All measured isothermal sections were reasonably reproduced. In addition, liquidus projection of th.s.ternary system was further calculated, which may be useful for relevant materials processing.

关键词： First-principle CALPhAD Thermodynamic modeling

DETERMINATION OF IsOThERMAL sECTION OF Fe-Ni-Zr TERNARY sYsTEM AT 1198K

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Acta Metallurgica sinica(English Letters) 2007年第6期20卷 398-402页

作者： G.J. Zhou s. Jin L.B. liu h.s. liu Z.P. Jin school of Materials science and Engineering Central-South UniversityChangsha 410083 China

The isothermal section of Fe-Ni-Zr ternary system at 1198K was experimentally determined using diffusion triple technique together with.s.anning electron microscopy （sEM） and electron probe microanalysis （EPMA ）. The results indicate that there are seven binary intermetallic ph.s.s, Fe2Zr, FeZr2, Nir2, NiZr, Ni10Zr7, Ni7Zr2 and Ni5Nr, found in the temary system, the binary compounds NiZr2 and FeZr2 show a homogeneity range and form a continuous solid solution, namely （Fe, Ni）Zr2 Five three-ph.s. sections, γ（Fe,Ni）＋ Ni3Zr2 ＋ Ni5Zr,γ（Fe, Ni）＋ Ni7Zr2 ＋ Ni10Zr7, γ（Fe,Ni）＋ Fe2Zr ＋ Ni10Zr7, （Fe,Ni）Zr2 ＋ Fe2Zr ＋ Nil0Zr7, and （Fe,Ni）Zr2 ＋ NiZr ＋ Ni10Zr7, exist in the isothermal section. No ternary compound is observed.

关键词： Fe-Ni-Zr diffusion triple isothermal section ph.s. diagram

solution‑Processed Thin Film Transparent Photovoltaics:Present Challenges and Future Development

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Nano-Micro Letters 2025年第2期17卷 566-600页

作者： Tianle liu Munerah M.s.Almutairi Jie Ma Aisling stewart Zhaohui Xing Mengxia liu Bo hou Yuljae Cho UM-sJTU Joint Institute Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China school of Ph.s.cs and Astronomy Cardiff UniversityCardiff CF243AAWalesUK Department of Electrical and Computer Engineering Yale UniversityNew HavenCT 06511USA Energy sciences Institute Yale UniversityWest HavenCT 06516USA Future Photovoltaics Research Center Global Institute of Future TechnologyShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Electrical energy is essential for modern society to sustain economic *** soaring demand for the electrical energy,together with an awareness of the environmental impact of fossil fuels,h.s.been driving a shift towards the utilization of solar ***,traditional solar energy solutions often require extensive spaces for a panel installation,limiting their practicality in a dense urban *** overcome the spatial constraint,researchers have developed transparent photovoltaics(TPV),enabling windows and facades in vehicles and buildings to generate electric *** TPV advancements are focused on improving both transparency and power output to rival commercially available silicon solar *** th.s.review,we first briefly introduce wavelength-and non-wavelengthselective strategies to achieve *** of merit and theoretical limits of TPVs are discussed to comprehensively understand the status of current TPV *** we highlight recent progress in different types of TPVs,with a particular focus on solution-processed thin-film photovoltaics(PVs),including colloidal quantum dot PVs,metal halide perovskite PVs and organic *** applications of TPVs are also reviewed,with emph.s.s on agrivoltaics,smart windows and ***,current challenges and future opportunities in TPV research are pointed out.

关键词： Transparent semiconductors solution-processable transparent solar cell Emerging solar cell materials Buildingintegrated photovoltaics

Low-cost and fluoride-free synth.s.s of MFI zeolite nanosheets with enhanced stability for benzene alkylation with ethanol

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Journal of Energy Chemistry 2025年第1期100卷 458-468页

作者： Peng Zhu Cun liu Yiren Yu Guoshu Gao Yumeng Zhao Xiongfu Zhang Guodong liu Guohui Yang state Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology state Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

Zeolite nanosheets with a short b-axis thickness are highly desirable in lots of catalytic reactions due to their reduced diffusion resistance. Nevertheless, conventional synth.s.s methods usually require expensive structure-directing agents(sDAs), pricey raw materials, and eco-unfriendly fluorine-containing additives. here, we contributed a cost-effective and fluoride-free synth.s.s method for synth.s.zing high-quality MFI zeolite nanosheets through a silicalite-1(sil-1) seed suspension and urea cooperative strategy, only with inexpensive colloidal silica as the si source. Our approach was effective for synth.s.zing both.s.l-1 and aluminum-containing ZsM-5 nanosheets. By optimizing key synth.s.s parameters,including seed aging time, seed quantity, and urea concentration, we achieved precise control over the crystal face aspect ratio and b-axis thickness. We also revealed a non-classical oriented nanosheet growth mechanism, where sil-1 seeds induced the formation of quasi-ordered precursor particles, and the(010)crystal planes of th.s. particles facilitated urea adsorption, thereby promoting c-axis-oriented *** obtained ZsM-5 nanosheets exhibited exceptional catalytic performance in the benzene alkylation with ethanol, maintaining stability for over 500 h, which is 5 times longer than traditional ZsM-5 catalysts. Furthermore, large-scale production of ZsM-5 nanosheets was successfully carried out in a 3 L highpressure autoclave, yielding samples consistent with th.s. from laboratory-scale synth.s.s. Th.s.work marks a significant step forward in the sustainable and efficient production of MFI nanosheets using inexpensive and environmentally friendly raw materials, offering the broad applicability in catalysis.

关键词： MFI zeolite ZsM-5 Nanosheets scale-up synth.s.s Aromatic alkylation

LAsER CLADDED TiCN COATINGs ON ThE sURFACE OF TITANIUM

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Acta Metallurgica sinica(English Letters) 2007年第3期20卷 210-216页

作者： Y.L. Yang D. Zhang h.s. Kou C. s. liu College of science Northeastern University Shenyang 110004 China College of Material and Metallurgy Northeastern University Shenyang 110004 China

Laser cladded coatings of TiCN were produced on the surface of titanium. To obtain the optimal techniques, several conditions were tested by varying the laser scanning rate. The choice of shielding gas was also studied. The cladded coatings were then evaluated from the surface mechanics point of view based on their microhardness. The microstructure of some interesting samples was investigated by optical micrographs （OM）. The results showed that under the condition of fixed pulse frequency and pulse width, the laser scanning rate and the shielding gas are the main factors influencing the components of coatings. TiCN coatings were decompounded and oxidized during the cladding process in the condition of no shielding gas of N2. X-ray diffraction results indicated that the composite coatings composed of TiCN, TiC, Ti2N, and TiO2 were produced using appropriate techniques. The results indicated that the best condition in terms of the surface microhardness is obtained when the scanning rate is 1.5mm/s, the pulse frequency is 15hz, the pulse width is 3.0ms, and N2 is ch.s.n as the shielding gas. The microhardness of the composite coatings is about 1331kg · mm^-2, which is about 4 times that of the substrate. The optical micrographs indicated that the cladding zone is made up of TiCN, TiO2 and some interdendritic Ti, but the diffusion zone mainly consists of the dendrites ph.s., and the cladded depth is about 80μm, which is more than 2 times that of the laser nitrided sample. There were no microcracks or air bubbles in the cladded sample, which was cladded using the above optimal techniques.

关键词： laser cladding TiCN coating titanium

Engineering atomic Rb-N configurations to tune radical pathways for highly selective photocatalytic h2O2 synth.s.s coupled with biomass valorization

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Journal of Energy Chemistry 2025年第1期100卷 215-225页

作者： Jiaye Li shuang Pan Yihuang Chen Qiong liu College of Chemistry and Materials Engineering Wenzhou University Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology (China) Institute of Analysis Guangdong Academy of Sciences (China National Analytical CenterGuangzhou)

Photocatalytic oxygen reduction for hydrogen peroxide （h2O2） synth.s.s presents a green and costeffective production ***,achieving highly selective h2O2synth.s.s remains challenging,necessitating precise control over free radical reaction pathways and minimizing undesirable oxidative ***,we report for the visible light-driven simultaneous co-photocatalytic reduction of O2to h2O2and oxidation of biomass using the atomic rubidium-nitride modified carbon nitride（CNRb）.The optimized CNRb catalyst demonstrates a record photoreduction rate of 8.01 mM h-1for h2O2generation and photooxidation rate of 3.75 mM h-1for furfuryl alcohol to furoic acid,achieving a remarkable solar-to-chemical conversion （sCC） efficiency of up to 2.27%.Experimental characterizations and DFT calculation disclosed that the introducing atomic Rb–N configurations allows for the high.s.lective generation of superoxide radicals while suppressing hydroxyl free radical *** is because the Rb–N serves as the new alternative site to perceive a stronger connection position for O2adsorption and reinforce the capability to extract protons,thereby triggering a high.s.lective redox product *** study holds great potential in precisely regulating reactive radical processes at the atomic level,thereby paving the way for efficient synth.s.s of h2O2coupled with biomass valorization.

关键词： Atomic economy Radical pathway regulation Rubidium atom coordination Biomass valorization

EFFECT OF COPPER ON ThE hOT PLAsTICITY OF 304hC sTAINLEss sTEEL

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Acta Metallurgica sinica(English Letters) 2005年第5期18卷 674-678页

作者： G.Z. Cui h.s. Di G.D. Wang X. h. liu state Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 China

The plasticity map of 304hC stainless steel was determined by using tensile and compressive test. The effect of Cu on the hot plasticity of 304hC stainless steel was analyzed. The microstructure, inclusion and fracture surface were studied by using the method of optical microscopy, sEM, EDs and EPMA. The results showed that Cu h.s.effect on the hot plasticity and the hot plasticity of 304hC stainless steel decrease with the increase of Cu content. The deformation temperature also h.s.much effect on the hot plasticity, the suitable deformation temperature are 1100-1200℃. The reason is that the brittle compounds were precipitated from austenite during cooling. Th.s. brittle compounds are Cu2s, Cu2O and PbCI etc.

关键词： 304hC stainless steel hot plasticity brittle compounds precipitation,impurity crack microstructure

Ammonia pyrolysis oxidation excited by nanosecond pulsed discharge:Global/fluid models hybrid solution

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Journal of Energy Chemistry 2025年第1期100卷 385-396页

作者： Mingming Zhang hanyu Wu Qi Chen Jiaxin Yang Bonan liu school of Mechanical Electronic and Control Engineering Beijing Jiaotong University China University of Petroleum

The kinetic characteristics of plasma-assisted oxidative pyrolysis of ammonia are studied by using the global/fluid models hybrid solution ***,the stable products of plasma-assisted oxidative pyrolysis of ammonia are *** results show that the consumption of Nh3/O2and the production of N2/h2change linearly with the increase of voltage,which indicates the decoupling of nonequilibrium molecular excitation and oxidative pyrolysis of ammonia at low ***,the detailed reaction kinetics mechanism of ammonia oxidative pyrolysis stimulated by a nanosecond pulse voltage at low pressure and room temperature is *** on the reaction path analysis,the simplified mechanism is *** detailed and simplified mechanism simulation results are compared with experimental data to verify the accuracy of the simplified ***,based on the simplified mechanism,the fluid model of ammonia oxidative pyrolysis stimulated by the nanosecond pulse plasma is established to study the pre-sheath.s.eath behavior and the resultant consumption and formation of key *** results show that the generation,development,and propagation of the pre-sheath have a great influence on the formation and consumption of *** consumption of Nh3by the cathode pre-sheath is greater than that by the anode pre-sheath,but the opposite is true for Oh and O（1s）.however,within the sheath,almost all reactions do not ***,by changing the parameters of nanosecond pulse power supply voltage,it is found that the electron number density,electron current density,and applied peak voltages are not the direct reasons for the structural changes of the sheath and ***,the discharge interval h.s.little effect on the sheath.s.ructure and gas mixture *** research results of th.s.paper not only help to understand the kinetic promotion of non-equilibrium excitation in the process of oxidative pyrolysis but also help to explore th

关键词： Nanosecond pulsed discharge Ammonia Oxidative pyrolysis Fluid model Global model

Micro-strain regulation strategy to stabilize perovskite lattice based on the categories and impact of strain on perovskite solar cells

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Journal of Energy Chemistry 2025年第1期100卷 578-604页

作者： Caixia Li Wenwu liu shiji Da Lingbin Kong Fen Ran state Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology school of Materials science and Engineering Lanzhou University of Technology

Photovoltaic metal halide perovskite solar cells(PsCs) convert light to electricity more efficiently than crystalline silicon cells, and the cost of materials used to make them is lower than that of silicon *** efficiency is not a core issue affecting the application of perovskite solar cells in special *** present, stability is the major technical encounters that hinders its further commercial development. Microstrain in PsCs is currently a significant factor responsible for the device's instability. strain-induced ion migration is widely believed to accelerate perovskite degradation even when external stimuli are ***, it is imperative to study strain to enhance the stability of PsCs. Th.s.paper reviews recent developments to understand strain's origin and effect mechanisms on performance of PsCs, including ion migration,failure behavior, defect formation, and its effect on photoelectric properties, stability, and ***, several well-known strain management strategies are systematically introduced based on the strain effect mechanism and strain engineering on the film, providing more clues for further preparation with increased stability. The manipulation of external ph.s.cal strain applied from films to entire devices h.s.been extensively studied. Furthermore, recommendations for future research directions and chemical approach.s.have been provided. It is emph.s.zed that strain engineering plays a crucial role in improving the efficiency and longevity of PsCs. Tensile strain causes rapid degradation, while moderate compressive strain and external strain control could improve properties and stability. Efforts should focus on controlling compressive strain to mitigate residual tensile strain and introducing it in a controlled manner. Future research endeavors may focus on exploring th.s. pathways to improve the efficiency and lifespan of PsCs.

关键词： halide perovskite solar cells strain origins strain effects strain management