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Enhancing the processing properties and stability of corn starch-linoleic acid complex via high pressure processing 认领 引用
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作者 Junyu Chen Yutong Zhang +4 位作者 Yuchen Zhu Shengqian Sun Changmou Xu Xiaomeng Wu Xiaojun Liao 《Food Innovation and Advances》 2025年第4期537-546,共10页
In this study,the structural changes and enhancement of the processing properties of corn starch-linoleic acid(CS-LA)complexes through high pressure processing(HPP)were investigated.Starch-lipid complexes(SLCs)treated... In this study,the structural changes and enhancement of the processing properties of corn starch-linoleic acid(CS-LA)complexes through high pressure processing(HPP)were investigated.Starch-lipid complexes(SLCs)treated with HPP showed improved encapsulation efficiency,peaking at 37.98%when processed at 500 MPa,which resulted in improved structural characteristics and properties.The formation of the SLCs affected the hydrogen bonding between starches and fatty acids,and the corn starch was transformed from type A to type V after complexing with linoleic acid.With the increase of pressure,the crystalline structure of starch transformed from type V6Ⅰ to type V6Ⅱ and V6Ⅲ,and the crystallinity of the complexes increased.SLCs exhibited improved processing properties,as evidenced by increased thermal stability,delayed complex aging,and enhanced oxidative stability during both drying and storage.The water-binding capacity of SLCs treated at 400 MPa could reach 66.97%at 4 d of storage,which was 1.5 times higher than that of corn starch.Additionally,its aging-delaying properties were evident in the high turbidity and low transmittance.The peroxide value(POV)of the high-pressuretreated SLCs stored for 15 d was only one-tenth of that of pure linoleic acid,reflecting an excellent ability to retard oxidation.This work elucidates an innovative pressure-assisted approach that is effective in enhancing the processing properties of starch-lipid complexes,offering a promising strategy for the development of new starch-based ingredients with enhanced industrial applicability. 展开更多
关键词 hydrogen bonding fatty acidsand corn starch structural characteristics Corn Starch Linoleic Acid Complex high pressure processing hpp enhancement processing properties structural changes
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Spray Atomized and Codeposited Al-Li Based Metal-matrix Composites Processing and Properties 认领 引用 被引量：1
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作者 E. Raskin S. Nayim M.Polak and J.BaramA.N.Sembira 《Journal of Materials Science & Technology》 SCIE EI CAS 1995年第5期329-339,共11页
In spray atomization and codeposition, a molten stream of metal is disintegrated into a fine dispersion of droplets by high velocity gas jets. The resulting semi-solidified droplets are directed towards a substrate wh... In spray atomization and codeposition, a molten stream of metal is disintegrated into a fine dispersion of droplets by high velocity gas jets. The resulting semi-solidified droplets are directed towards a substrate where they impact and collect as rapidly solidified splats. Relatively high rates of solidification are achieved as a result of the thinness of the splats and the rapid heat extraction during flight and upon impacting with the substrate. The processing method uses codeposition of the metallic semi-solidified droplets (metallic matrix) with the injected reinforcement ceramic particles. In the present paper, the microstructures, mechanical properties, interfacial properties, thermal stability and aging behaviour of spray atomized and codeposited Al-Li-X MMC's (injected X=SiC, Al2O3) are reported and correlated to the processing conditions. 展开更多
关键词 Li Al Spray Atomized and Codeposited Al-Li Based Metal-matrix Composites Processing and Properties
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High-Performance Perovskite Solar Cells and Modules via Slot-Die Coating:Engineering Advances,Photoluminescence Insights,and Future Perspectives 认领 引用 被引量：1
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作者 Li’an Peng Yonglong Mao +4 位作者 Yuxia Yin Yuxin Chen Teng Zhang Shengye Jin Jun Zhang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第9期326-371,共46页
Slot-die coating has solidified its role as the preeminent industrial-scale deposition technique for perovskite photovoltaics,combining exceptional material utilization,direct compatibility with roll-to-roll productio... Slot-die coating has solidified its role as the preeminent industrial-scale deposition technique for perovskite photovoltaics,combining exceptional material utilization,direct compatibility with roll-to-roll production,and high-throughput capability.This review comprehensively surveys recent advances in slot-die-coated perovskite solar cells and modules,with a focused analysis on the governing principles behind the structure–property–performance relationship.We first deconstruct how coating methodologies—including one-step,two-step,and hybrid processes—dictate film morphology and crystalline quality.We then elaborate on perovskite ink engineering,emphasizing the critical role played by solvent selection and functional additives in controlling nucleation kinetics and crystal growth during large-area deposition.Furthermore,we examine innovative interface modulation strategies that enhance film integrity,suppress defects,and mitigate ion migration.A key distinctive feature of this review is its emphasis on advanced photoluminescence(PL)characterization techniques—such as in situ PL,PL imaging,and time-resolved PL—which provide unparalleled insights into crystallization pathways,defect distribution,and charge carrier dynamics.These tools are indispensable for mechanistic decoding and rational optimization of the slot-die process.Finally,we outline pressing research directions,highlighting the necessity to overcome persistent challenges in operational stability,efficiency–stability trade-offs,the establishment of unified stability assessment protocols,and manufacturing reproducibility to ultimately bridge the laboratory-to-fab gap and accelerate the commercialization of slot-die-coated perovskite solar modules. 展开更多
关键词 Slot-die coating Perovskite photovoltaics Process–structure–property relationship Photoluminescence Laboratory-tofab transition
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Comparative Study on Processing Property Between CWW CO2Gas Shielded Welding and SAW 认领 引用 被引量：11
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作者 FANG Chen-fu HE Bin +3 位作者 ZHAO Zhong-chao HU Xiao-guang JIANG Jia-zhong SHI Zhen 《Journal of Iron and Steel Research International》 SCIE CAS CSCD 2013年第4期81-86,共6页
Cable welding wire(CWW)CO2gas shielded welding is an innovative process arc welding with high efficiency,high quality and low consumption,in which cable wire is used as consumable electrode.CWW CO2gas shielded w... Cable welding wire(CWW)CO2gas shielded welding is an innovative process arc welding with high efficiency,high quality and low consumption,in which cable wire is used as consumable electrode.CWW CO2gas shielded welding and submerged arc welding(SAW)are used for contrast studies on processing property of high strength steel A36used in ship structure.The results show that the shapes of weld seam,using CWW CO2gas shielded welding and SAW,are good and no weld defect such as air hole,flaw,slag inclusion,incomplete fusion,lack of penetration and so on are found in the weld seam.Because the rotating of arc during CWW CO2gas shielded welding process has a strong stirring effect on molten pool,the grain in the heat affected zone(HAZ)of the joints,using CWW CO2gas shielded welding,is small.Tensile failure positions of joints by CWW CO2gas shielded welding and SAW are all in the base metal,but tensile strength of CWW CO2gas shielded welding joint is higher than that of SAW joint by an average of 2.3%.The average impact energy of HAZ,using CWW CO2gas shielded welding and SAW,is almost equal,but the average impact energy of the weld seam using CWW CO2gas shielded welding is increased by 6%,and the average impact energy of the fusion line is increased by 7%.The 180°bending tests for the joints of CWW CO2gas shielded welding and SAW are all qualified,and the joints hardness is all less than HV 355,but hardness of CWW CO2gas shielded welding wire welding joint near the fusion line is obviously lower.It can be concluded that the properties of CWW CO2gas shielded welding are better than those of the SAW joint,and CWW CO2gas shielded welding is suitable for welding high strength steel A36used in ship structure. 展开更多
关键词 cable welding wire(CWW) gas shielded welding submerged arc welding(SAW) processing property
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Effect of Different Aging Processes on the Microstructure and Mechanical Properties of a Novel Al–Cu–Li Alloy 认领 引用 被引量：16
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作者 Hongying Li Desheng Huang +3 位作者 Wei Kang Jiaojiao Liu Yangxun Ou Dewang Li 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2016年第10期1049-1053,共5页
The effects of different aging processes on the microstructure and mechanical properties of a novel Al-Cu-Li alloy have been investigated by X-ray diffraction, scanning electron microscopy and transmission electron mi... The effects of different aging processes on the microstructure and mechanical properties of a novel Al-Cu-Li alloy have been investigated by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. It is found that the tensile properties of a novel Al-Cu-Li alloy are sensitive to aging processes, which correspond to different microstructures. σ（Al_5Cu_6Mg_2） and T_1（Al_2CuLi） phases are the major precipitates for the alloy in T6 aging condition（165 ℃/60 h）. After duplex aging condition（150 ℃/24 h ＋ 180 ℃/12 h）, σ, θ＇（Al_2Cu） and T_1 phases are detected. Only the T_1 phases can be found in the T8 state alloy（6% pre-strain＋135 ℃/60 h）. The failure modes of alloy in T6 and duplex aging conditions are dimple-intergranular fracture, while typical quasi-cleavage fracture in T8 condition. 展开更多
关键词 Al-Cu-Li alloy Aging process Microstructure Mechanical properties
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Properties of 3Cr2W8V Die Steel With Striations Processed by Laser 认领 引用 被引量：3
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作者 CHEN Li ZHOU Hong +1 位作者 ZHANG Zhi-hui REN Lu-quan 《Journal of Iron and Steel Research International》 SCIE CAS 2009年第4期39-43,共5页
The striations on the surface of 3Cr2W8V die steel were processed by laser. The microstructure, hardness, wear resistance and thermal fatigue behavior of the specimens processed by laser were measured. The appearance ... The striations on the surface of 3Cr2W8V die steel were processed by laser. The microstructure, hardness, wear resistance and thermal fatigue behavior of the specimens processed by laser were measured. The appearance and mechanism of thermal fatigue crack propagation in the zone processed by laser were observed and discussed. The results show that the wear resistance and thermal fatigue resistance of materials processed by laser are all better than those of the unprocessed material. The processed zone by laser plays a role in baffling wearing process and crack propagation. The pile-nail effect of processed zone is the main factor for improving the wear resistance and thermal fatigue resistance of material. 展开更多
关键词 laser processing die steel property
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Effect of friction stir processed microstructure on tensile properties of an Al-Zn-Mg-Sc alloy upon subsequent aging heat treatment 认领 引用 被引量：5
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作者 Indrajit Charit Rajiv S.Mishra 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2018年第1期214-218,共5页
An as-cast Al-Zn-Mg-Sc alloy was friction stir processed varying tool related parameters, yielding microstructures with different grain sizes （0.68, 1.8 and 5.5 μm）. Significant increases in room temperature ductil... An as-cast Al-Zn-Mg-Sc alloy was friction stir processed varying tool related parameters, yielding microstructures with different grain sizes （0.68, 1.8 and 5.5 μm）. Significant increases in room temperature ductility were obtained in these materials with reasonable enhancement in strength. It is demonstrated that the type of microstructure produced by friction stir processing （FSP） has a significant influence on the choice of post-FSP heat treatment design for achieving improved tensile properties. It is also found that the ultrafine grained FSP material could not achieve the desired high strength during the post-FSP heat treatment without grain coarsening, whereas the micro-grained FSP materials could reach such strength levels （〉560 MPa） under conventional age hardening heat treatment conditions. 展开更多
关键词 Friction stir processing Microstructure Tensile properties Heat treatment
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Effect of M/P and Borax on the Hydration Properties of Magnesium Potassium Phosphate Cement Blended with Large Volume of Fly Ash 认领 引用 被引量：5
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作者 LIU Rmlqing YANG Yuanquan SUN Sihui 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2018年第5期1159-1167,共9页
The effect of the borax content and magnesia to phosphate ratio（M/P） on the hydration properties of the magnesium potassium phosphate cement（MKPC） with large volume of fly ash was investigated, and a five-hydratio... The effect of the borax content and magnesia to phosphate ratio（M/P） on the hydration properties of the magnesium potassium phosphate cement（MKPC） with large volume of fly ash was investigated, and a five-hydration-stage for MKPCs was proposed. The results show that MKPC sets rapidly with less than 8% of borax, which is unfavorable to the application of MKPC on construction. Adding more than 8%（including 8%） of borax results in a secondary hydration peak for MKPC, in which the process of hydration can be divided into five stages, namely, pre-induction period, induction period, acceleration period, deceleration period and stable period. M/P ratios could not change the multi-step reactive stages but higher M/P ratios could accelerate the hydration. Borax tends to impact the formation of Mg-containing hydrated products. 展开更多
关键词 MKPC hydration properties M/P borax process of hydration
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Effect of Rolling Process on Comprehensive Properties of Corrosion Resistant Steel for Bottom Plate of Cargo Oil Tanks 认领 引用 被引量：1
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作者 于驰 王平 +1 位作者 GAO Xiuhua DU Linxiu 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2016年第2期379-386,共8页
A new kind of corrosion resistant steelfor cargo oiltanks（COT）was developed.The influences of finalrolling temperature,cooling rate,and finalcooling temperature on microstructure were investigated.The proper rolling... A new kind of corrosion resistant steelfor cargo oiltanks（COT）was developed.The influences of finalrolling temperature,cooling rate,and finalcooling temperature on microstructure were investigated.The proper rolling process parameters were obtained through multi-pass thermalsimulation test.The finalrolling temperature is about 820 ℃,the finalcooling temperature is about 600 ℃,and the cooling rate should be controlled between 10 ℃/s and 20 ℃/s.Based on the above analysis of the results,three groups of rolling samples by thermo mechanicalcontrolprocess are prepared.The tensile strength,yield strength,and toughness of the corrosion resistant steelare measured,which meet the requirements of DH36 steel,it can instruct the actualrolling production.The corrosion behaviour is also researched by weight loss and electrochemicalimpedance spectroscopic method,and it is found that the steelhas good corrosion resistance performance,the best one is No.3 steel,the corrosion rate of which is about 1/4 of the accepted criterion. 展开更多
关键词 rolling process corrosion resistant steel comprehensive properties corrosion rate
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Photocatalytic properties of hierarchical BiOXs obtained via an ethanol-assisted solvothermal process 认领 引用 被引量：6
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作者 Manke Jia Xiaolong Hu +2 位作者 Shulian Wang Yingping Huang Lirong Song 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2015年第9期172-180,共9页
In this study, bismuth oxyhalide（Bi OXs（X_Cl, Br, I）） semiconductors were prepared by a simple solvothermal method, with ethanol serving as solvent and a series of tetrabutylammonium halide surfactants as halogen ... In this study, bismuth oxyhalide（Bi OXs（X_Cl, Br, I）） semiconductors were prepared by a simple solvothermal method, with ethanol serving as solvent and a series of tetrabutylammonium halide surfactants as halogen sources. Under identical synthetic conditions, Bi OBr was more readily constructed into regular flower-like hierarchical architectures. The photocatalytic properties of the materials were studied by monitoring the degradation of rhodamine B（Rh B）,with visible light absorption, and colorless salicylic acid（SA）. It was found that both Rh B and SA were rapidly degraded on the surface of Bi OBr. Bi OCl was rather active for the degradation of Rh B,but ineffective toward the degradation of SA. However, neither Rh B nor SA could be degraded effectively in the case of Bi OI. Further experiments such as UV–visible spectroscopy and detection of U OH and O2 Uradicals suggest that the electronic structure of the Bi OX photocatalysts is responsible for the difference in their activities. 展开更多
关键词 BiOXs（X_Cl Br I） Ethanol-assisted solvothermal process Photocatalytic properties
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Friction-stir welding and processing of Ti-6Al-4V titanium alloy:A review 认领 引用 被引量：38
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作者 S.Mironov Y.S.Sato H.Kokawa 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2018年第1期58-72,共15页
In this work, the current understanding and development of fliction-stir welding and processing of Ti- 6Al-4V alloy are briefly reviewed. The critical issues of these processes are addressed, including welding tool ma... In this work, the current understanding and development of fliction-stir welding and processing of Ti- 6Al-4V alloy are briefly reviewed. The critical issues of these processes are addressed, including welding tool materials and design, tool wea,, processing temperature, material flow, processing window and residual stresses. A particular emphasis is given to microstructural aspects and microstructure-properties relationship. Potential engineering applications are highlighted. 展开更多
关键词 Ti-6Al-4V titanium alloy Friction-stir welding Friction-stir processing Microstructure Properties
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MgO-based adsorbents for CO2 adsorption:Influence of structural and textural properties on the CO_2 adsorption performance 认领 引用 被引量：5
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作者 Gutiérrez-Bonilla Elvira Granados-Correa Francisco +1 位作者 Sánchez-Mendieta Víctor Morales-Luckie Raúl Alberto 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2017年第7期418-428,共11页
A series of MgO-based adsorbents were prepared through solution–combustion synthesis and ball-milling process.The prepared MgO-based powders were characterized using X-ray diffraction,scanning electron microscopy,N_2... A series of MgO-based adsorbents were prepared through solution–combustion synthesis and ball-milling process.The prepared MgO-based powders were characterized using X-ray diffraction,scanning electron microscopy,N_2 physisorption measurements,and employed as potential adsorbents for CO_2 adsorption.The influence of structural and textural properties of these adsorbents over the CO_2 adsorption behaviour was also investigated.The results showed that MgO-based products prepared by solution–combustion and ball-milling processes,were highly porous,fluffy,nanocrystalline structures in nature,which are unique physico-chemical properties that significantly contribute to enhance their CO_2 adsorption.It was found that the MgO synthesized by solution combustion process,using a molar ratio of urea to magnesium nitrate（2：1）,and treated by ball-milling during 2.5 hr（MgO-BM2.5h）,exhibited the maximum CO_2 adsorption capacity of 1.611 mmol/g at 25℃ and 1 atm,mainly via chemisorption.The CO_2 adsorption behaviour on the MgO-based adsorbents was correlated to their improved specific surface area,total pore volume,pore size distribution and crystallinity.The reusability of synthesized MgO-BM2.5h was confirmed by five consecutive CO_2adsorption–desorption times,without any significant loss of performance,that supports the potential of MgO-based adsorbent.The results confirmed that the special features of MgO prepared by solution–combustion and treated by ball-milling during 2.5 hr are favorable to be used as effective MgO-based adsorbent in post-combustion CO_2 capture technologies. 展开更多
关键词 CO_2 adsorption MgO-based adsorbents Porous materials Solution–combustion synthesis Ball-milling process Textural properties
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Influence of core sand properties on flow dynamics of core shooting process based on experiment and multiphase simulation 认领 引用 被引量：2
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作者 Chang-jiang Ni Gao-chun Lu +1 位作者 Tao Jing Jun-jiao Wu 《China Foundry》 SCIE CAS 2017年第2期121-127,共7页
The influence of core sand properties on flow dynamics was investigated synchronously with various core sands, transparent core-box and high-speed camera. To confirm whether the core shooting process has significant t... The influence of core sand properties on flow dynamics was investigated synchronously with various core sands, transparent core-box and high-speed camera. To confirm whether the core shooting process has significant turbulence, the flow pattern of sand particles in the shooting head and core box was reproduced with colored core sands. By incorporating the kinetic theory of granular flow(KTGF), kinetic-frictional constitutive correlation and turbulence model, a two-fluid model(TFM) was established to study the flow dynamics of the core shooting process. Two-fluid model(TFM) simulations were then performed and a areasonable agreement was achieved between the simulation and experimental results. Based on the experimental and simulation results, the effects of turbulence, sand density, sand diameter and binder ratio were analyzed in terms of filling process, sand volume fraction(αs) and sand velocity(Vs). 展开更多
关键词 core shooting process sand property binder ratio two-fluid model flow dynamic turbulence
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Effect of Processing Conditions in the Preparation of PP-Ternary Nanocomposite Using MWCNT as Secondary Filler 认领 引用
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作者 Salawudeen Taofeeq Olalekan Maan F. Alkathib +2 位作者 Faridah Yusof Qasim H. Shah Suleyman A. Muyibi 《材料科学与工程（中英文版）》 2011年第2期139-144,共6页
The present paper investigates the behavior of experimental polypropylene ternary nanocomposites produced in the laboratory under different process conditions using multiwall carbon nanotube as secondary filler. Full ... The present paper investigates the behavior of experimental polypropylene ternary nanocomposites produced in the laboratory under different process conditions using multiwall carbon nanotube as secondary filler. Full factorial experimental design was explored to study the effect of temperature, mixing speed and carbon nanotube （CNT） loading on the morphological and mechanical features of the ternary nanocomposites following the determination of maleic anhydride grafted polypropylene （MAgPP） percentage required for the intermediate composite. Tensile properties and morphological characterization were studied using universal tensile machine （UTM） and scanning elecrtron microscope （SEM） machines respectively. The results revealed that process temperature and CNT loading influences both the morphological and mechanical properties ofpolypropylene ternary nanocomposites, whereas, the mixing speed has little effect on these properties. Specifically, CNT loading in amount less than 1% showed better tensile strength and stiffness while the strength falls off at 1% CNT loading. Morphological studies indicate better dispersion of CNT in the binary composite system at process temperature of 170℃ and formation of agglomerates at 250 ℃. The present study suggests that CNT loading and process temperature lower than 1% and 200 ~C respectively produces polypropylene ternary nanocomposites with better mechanical properties and enhanced dispersion of the CNT in the composite system at a moderate mixing speed slightly above 100 rpm. 展开更多
关键词 CNT, process conditions, tensile properties, ternary nanocomposites.
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Optimal design of hot rolling process for C-Mn steel by combining industrial data-driven model and multi-objective optimization algorithm 认领 引用 被引量：10
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作者 Si-wei Wu Xiao-guang Zhou +3 位作者 Jia-kuang Ren Guang-ming Cao Zhen-yu Liu Nai-an Shi 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2018年第7期700-705,共6页
A successful mechanical property data-driven prediction model is the core of the optimal design of hot rolling process for hot-rolled strips. However, the original industrial data, usually unbalanced, are inevitably m... A successful mechanical property data-driven prediction model is the core of the optimal design of hot rolling process for hot-rolled strips. However, the original industrial data, usually unbalanced, are inevitably mixed with fluctuant and abnormal values. Models established on the basis of the data without data processing can cause misleading results, which cannot be used for the optimal design of hot rolling process. Thus, a method of industrial data processing of C-Mn steel was proposed based on the data analysis. The Bayesian neural network was employed to establish the reliable mechanical property prediction models for the optimal design of hot rolling process. By using the multi-objective optimization algorithm and considering the individual requirements of costumers and the constraints of the equipment, the optimal design of hot rolling process was successfully applied to the rolling process design for Q345B steel with 0.017% Nb and 0.046% Ti content removed. The optimal process design results were in good agreement with the industrial trials results, which verify the effectiveness of the optimal design of hot rolling process. 展开更多
关键词 Industrial data Data processing - Mechanical property Optimal design Hot rolling process C-Mn steel
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Collaborative optimization design of process parameter and structural topology for laser additive manufacturing 认领 引用 被引量：8
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作者 Shaoying LI Hongkai WEI +3 位作者 Shangqin YUAN Jihong ZHU Jiang LI Weihong ZHANG 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2023年第1期456-467,共12页
High-resolution laser additive manufacturing(LAM)significantly releases design free-dom,promoting the development of topology optimization(TO)and advancing structural design methods.In order to fully take advantage of... High-resolution laser additive manufacturing(LAM)significantly releases design free-dom,promoting the development of topology optimization(TO)and advancing structural design methods.In order to fully take advantage of voxelated forming methods and establish the quantitative relationship between the mechanical properties of printing components and multiple process factors(laser-and process-parameters),the concurrent optimization design method based on LAM should cover the process-performance relationship.This study proposes a novel artificial intelligence-facilitated TO method for LAM to concurrently design microscale material property and macroscale structural topology of 3D components by adopting heuristic and gradient-based algorithms.The process–structure–property relationship of selective laser sintering is established by the back propagation neural network,and it is integrated into the TO algorithm for providing a systematic design scheme of structural topology and process parameter.Compared with the classical optimization method,numerical examples show that this method is able to improve the mechanical performance of the macrostructure significantly.In addition,the collaborative design method is able to be widely applied for complex functional part design and optimization,as well as case studies on artificial intelligence-facilitated product evaluation. 展开更多
关键词 Back propagation neural network Gradient algorithm Laser additive manufactur-ing Process–structure–property Topology optimization
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Prediction and experimental measurement of the electromagnetic thrust generated by a microwave thruster system 认领 引用 被引量：2
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作者 杨涓 王与权 +4 位作者 马艳杰 李鹏飞 杨乐 王阳 何国强 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第5期104-112,共9页
A microwave thruster system that can convert microwave power directly to thrust without a gas propellant is devel-oped. In the system, a cylindrical tapered resonance cavity and a magnetron microwave source are used r... A microwave thruster system that can convert microwave power directly to thrust without a gas propellant is devel-oped. In the system, a cylindrical tapered resonance cavity and a magnetron microwave source are used respectively as the thruster cavity and the energy source to generate the electromagnetic wave. The wave is radiated into and then reflected from the cavity to form a pure standing wave with non-uniform electromagnetic pressure distribution. Consequently, a net electromagnetic thrust exerted on the axis of the thruster cavity appears, which is demonstrated through theoretical calcula- tion based on the electromagnetic theory. The net electromagnetic thrust is also experimentally measured in the range from 70 mN to 720 mN when the microwave output power is from 80 W to 2500 W. 展开更多
关键词 electromagnetic waves Maxwell stress tensor electromagnetic processes and properties
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Effects of processing parameters on fatigue properties of LY2 Al alloy subjected to laser shock processing 认领 引用 被引量：5
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作者 张磊 鲁金忠 +5 位作者 张永康 罗开玉 戴峰泽 崔承云 钱晓明 钟俊伟 《Chinese Optics Letters》 SCIE EI CAS CSCD 2011年第6期76-79,共4页
We address the effects of processing parameters on residual stresses and fatigue properties of LY2 Al alloy by laser shock processing （LSP）. Results show that compressive residual stresses are generated near the sur... We address the effects of processing parameters on residual stresses and fatigue properties of LY2 Al alloy by laser shock processing （LSP）. Results show that compressive residual stresses are generated near the surface of samples due to LSP. The maximum compressive residual stress at the surface by two LSP impacts on one side is higher than that by one LSP impact. The maximum value of tensile residual stress is found at the mid-plane of samples subjected to two-sided LSP. Compared with fatigue lives of samples treated by single-sided LSP, lives of those treated by two-sided LSP are lower. However, these are higher than untreated ones. 展开更多
关键词 LY LSP Effects of processing parameters on fatigue properties of LY2 Al alloy subjected to laser shock processing Al
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Semisolid-rolling and annealing process of woven carbon fibers reinforced Al-matrix composites 认领 引用 被引量：12
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作者 Junjia Zhang Shichao Liu +3 位作者 Yiping Lu Li Jiang Yubo Zhang Tingju Li 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2017年第7期623-629,共7页
Semisolid-rolling method was successfully developed to prepare the Ni-coated woven carbon fibers reinforced Al-matrix composite. Due to the appropriate matrix flowability and rolling pressure, the Al-matrix could infi... Semisolid-rolling method was successfully developed to prepare the Ni-coated woven carbon fibers reinforced Al-matrix composite. Due to the appropriate matrix flowability and rolling pressure, the Al-matrix could infiltrate into the woven fibers sufficiently and attach to the reinforcements closely forming a smooth interface. The rolling speed of 4 rad/min offered a subtle equilibrium between the heat transfer and the material deformation. The covering matrix should be controlled at semisolid state to provide a better infiltration behavior and a protective effect on the carbon fibers. With the addition of fibers, an improvement for more than 25% was obtained in the bending strength of the materials. Furthermore, the woven carbon fibers could strengthen the composite in multiple directions, rather than only along the fiber longitudinal directions. The annealing process promoted the Ni coating to react with and to diffuse into the matrix, resulted in an obvious increase of the bending strength. 展开更多
关键词 Metal-matrix composites Woven carbon fiber Semisolid-rolling process Annealing Mechanical property
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Simple Fabrication and Characterization of Discontinuous Carbon Fiber Reinforced Aluminum Matrix Composite for Lightweight Heat Sink Applications 认领 引用 被引量：2
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作者 Hiroki Kurita Emilien Feuillet +3 位作者 Thomas Guillemet Jean-Marc Heintz Akira Kawasaki Jean-Francois Silvain 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2014年第4期714-722,共9页
The constant increase in power and heat flux densities encountered in electronic devices fuels a rising demand for lightweight heat sink materials with suitable thermal properties.In this study,discontinuous pitch-bas... The constant increase in power and heat flux densities encountered in electronic devices fuels a rising demand for lightweight heat sink materials with suitable thermal properties.In this study,discontinuous pitch-based carbon fiber reinforced aluminum matrix（Al-CF） composites with aluminum–silicon alloy（Al–Si） were fabricated through hot pressing.The small amount of Al–Si contributed to enhance the sintering process in order to achieve fully dense Al–CF composites.A thermal conductivity and CTE of 258 W/（m K） and 7.0 9 10-6/K in the in-plane direction of the carbon fibers were obtained for a（Al95 vol%＋ Al–Si5 vol%）-CF50 vol%composite.Carbon fiber provides the reducing of CTE while the conservation of thermal conductivity and weight of Al.The achieved CTEs satisfy the standard requirements for a heat sink material,which furthermore possess a specific thermal conductivity of 109 W cm3/（m K g）.This simple process allows the low-cost fabrication of Al–CF composite,which is applicable for a lightweight heat sink material. 展开更多
关键词 Carbon fiber Metal-matrix composites（MMCs） Thermal properties Powder processing
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