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中国有色金属学会会刊：英文版 1999年第2期9卷 56-60页

作者： Pan, hongge Zhejiang Univ Hangzhou China

１ＩＮＴＲＯＤＵＣＴＩＯＮＭｅｔａｌｈｙｄｒｉｄｅｓｈａｖｅｂｅｅｎｕｓｅｄａｓｎｅｇａｔｉｖｅｅｌｅｃｔｒｏｄｅｓｏｆｎｉｃｋｅｌ／ｍｅｔａｌｈｙｄｒｉｄｅｂａｔｅｒｉｅｓｉｎｐｌａｃｅｏｆｃａｄｍｉｕｍ，ｂｅｃａ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＭｅｔａｌｈｙｄｒｉｄｅｓｈａｖｅｂｅｅｎｕｓｅｄａｓｎｅｇａｔｉｖｅｅｌｅｃｔｒｏｄｅｓｏｆｎｉｃｋｅｌ／ｍｅｔａｌｈｙｄｒｉｄｅｂａｔｅｒｉｅｓｉｎｐｌａｃｅｏｆｃａｄｍｉｕｍ，ｂｅｃａｕｓｅｏｆｔｈｅｉｒｈｉｇｈｅｎｅ...

关键词： electrochemical overpotentialconcentration overpotentialanodic polarizationhydrogen storage alloy

Piston-ring and Cylinder-liner Lubrication in Internal Combustion Engines Based on Thermo-hydrodynamic

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Chinese Journal of Mechanical Engineering 2011年第6期24卷 971-975页

作者： ZHANG Junhong GAO hongge NI Guangjian State Key Laboratory of Engine Tianjin UniversityTianjin 300072China Tianjin Internal Combustion Engine Research Institute Tianjin 300072China

Currently the extruded effect,roughness to the lubricant shear thinning,temperature changes and other factors or some combination of a single factor mainly considered in the lubrication study of piston *** the study of the energy equation,the oil viscosity-temperature properties,adsorption layer characteristics are usually not *** the theoretical research is different from the actual situation of *** lubrication of piston ring-cylinder liner system in internal combustion(IC) engines is studied here based on the theory of thermal *** unsteady and compressible hydrodynamic lubrication model with an equivalent viscosity based on shear and extruded flow factor is derived by employing the viscosity-temperature relationship,meanwhile,characteristics such as lubricating oil’s density varying with pressure and temperature,thickness of adsorbent layer and oil film’s geometry are also considered in this *** setting up the energy equation,the effect of lubricating oil’s volume expansion and viscous dissipation on temperature,the heat conduction along oil film’s thickness direction are *** difference equation is formed by using a first-order difference scheme in time scale and second-order difference scheme in space scale.A common diesel engine is introduced as an instance to predict the distribution of the minimum oil film thickness in the piston ring-cylinder liner *** results of simulation calculation show that the minimum oil film thickness will decrease especially around the top dead center when the oil’s volume expansion,viscous dissipation and heat conduction are considered,which implies that:it is essential to take the thermal flow idea into account during investigating piston ring-cylinder liner system’s lubrication.A more complete piston ring-cylinder liner lubrication theory was established according to thermal fluids from the perspective of *** is more helpful to guide the practical applicat

关键词： thermal flow piston ring-cylinder liner adsorbent layer viscosity-temperature revision

Efficient hybrid neural network for spike sorting

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Journal of Systems Engineering and Electronics 2013年第1期24卷 157-164页

作者： hongge Li Pan Yu Tongsheng Xia School of Electronics Information Engineering Beihang University

Artificial neural network has been used successfully to develope the automatic spike extraction. In order to address some of the problems before the wireless transmission of the implantable chip, the automatic spike sorting method with low complexity and high efficiency is proposed based on the hybrid neural network with the principal component analysis network （PCAN） and normal boundary response （NBR） self-organizing mapping （SOM） net- work classifier. An automatic PCAN technique is used to reduce the dimension and eliminate the correlation of the spike signal. The NBR-SOM network performs the spike sorting challenge and improves the classification performance. The experimental results show that based on the hybrid neural network, the spike sorting method achieves the accuracy above 97.91% with signals contain- ing five classes. The proposed NBR-SOM network classifier is to further improve the stability and effectiveness of the classification system.

关键词： neural network spike sorting implantable microsys-tern.

The relationship between thermo-mechanical history,microstructure and mechanical properties in additively manufactured CoCrFeMnNi high entropy alloy

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Journal of Materials Science & Technology 2021年第18期77卷 187-195页

作者： hongge Li Yongjiang Huang Jianfei Sun Yunzhuo Lu School of Materials Science and Engineering Harbin Institute of TechnologyHarbinChina School of Materials Science and Engineering Dalian Jiaotong UniversityDalianChina

Here,a single-track CoCrFeMnNi high entropy alloy(HEA)was successfully fabricated by laser melting deposition(LMD).Combining the experimental observations and numerical simulation,the microstructure and mechanical properties of the as-deposited parts were systematically studied from the perspective of thermo-mechanical history experienced during the LMD *** strengthening mechanisms of the LMDed CoCrFeMnNi HEA parts were *** frictional stress strengthening,grain boundary strengthening and dislocation strengthening contributed the whole yield strength of the *** strengthening dominated the strengthening *** was expected that the establishment of the relationship between thermo-mechanical history,microstructure and mechanical properties of the LMDed CoCrFeMnNi HEA could shed more insights into achieving HEA parts with the desired microstructure and high performance.

关键词： Laser melting deposition High entropy alloy Thermo-mechanical history Microstructure Mechanical property Strengthening mechanisms

PREPARATION OF A SINGLE PHASE R_(3)(Fe,Mo)_(29)(R=Ce,Nd,Sm,Gd,Tb,Dy AND Y)

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中国有色金属学会会刊：英文版 1998年第3期8卷 37-41页

作者： Pan hongge Chen Weixiang Chen Yun Chen Changpin Department of Materials Science and Engineering Zhejiang UniversityHangzhou 310027P.R.China

１ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｒｅｃｅｎｔｙｅａｒｓ，ｒｅｓｅａｒｃｈｅｒｓｉｎｔｈｅｆｉｅｌｄｏｆｐｅｒｍａｎｅｎｔｍａｇｎｅｔｉｃｍａｔｅｒｉａｌｓｈａｖｅｐａｉｄｍｏｒｅａｔｔｅｎｔｉｏｎｔｏｔｈｅｎｅｗｔｙ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｒｅｃｅｎｔｙｅａｒｓ，ｒｅｓｅａｒｃｈｅｒｓｉｎｔｈｅｆｉｅｌｄｏｆｐｅｒｍａｎｅｎｔｍａｇｎｅｔｉｃｍａｔｅｒｉａｌｓｈａｖｅｐａｉｄｍｏｒｅａｔｔｅｎｔｉｏｎｔｏｔｈｅｎｅｗｔｙｐｅｏｆｒａｒｅｅａｒｔｈｉｒｏｎ...

关键词： 3:29 compounds preparation a single phase

FORMATION LAW OF PHASES IN ULTRAFINE POWDERS OF Al-Cu ALLOY PREPARED BY GAS EVAPORATION PROCESS

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中国有色金属学会会刊：英文版 1999年第2期9卷 128-133页

作者： Yan, hongge Chen, Zhenhua Hu, Xiang Huang, Peiyun Central South Univ of Technology Changsha China

１ＩＮＴＲＯＤＵＣＴＩＯＮＵｌｔｒａｆｉｎｅｐｏｗｄｅｒｓｗｉｔｈａｐａｒｔｉｃｌｅｓｉｚｅｌｅｓｔｈａｎ１００ｎｍｈａｖｅｅｘｃｅｌｅｎｔｐｒｏｐｅｒｔｉｅｓｉｎｃｏｎｔｒａｓｔｔｏｃｏａｒｓｅｇｒａｉｎｍａｔｅｒ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＵｌｔｒａｆｉｎｅｐｏｗｄｅｒｓｗｉｔｈａｐａｒｔｉｃｌｅｓｉｚｅｌｅｓｔｈａｎ１００ｎｍｈａｖｅｅｘｃｅｌｅｎｔｐｒｏｐｅｒｔｉｅｓｉｎｃｏｎｔｒａｓｔｔｏｃｏａｒｓｅｇｒａｉｎｍａｔｅｒｉａｌｓ［１，２］ａｎｄｈａｖｅｗ...

关键词： gas evaporationvapor condensationultrafine powdersalloy powder

Sensitivity analysis of Biome-BGCMuSo for gross and net primary productivity of typical forests in China

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Forest Ecosystems 2022年第1期9卷 111-123页

作者： hongge Ren Li Zhang Min Yan Xin Tian Xingbo Zheng Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing100094China University of Chinese Academy of Sciences Beijing100049China Institute of Forest Resource Information Techniques Chinese Academy of ForestryBeijing100091China Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang110016China Research Station of Changbai Mountain Forest Ecosystems Chinese Academy of SciencesAntu133613JilinChina

Background:Process-based models are widely used to simulate forest productivity,but complex parameterization and calibration challenge the application and development of these *** analysis of numerous parameters is an essential step in model calibration and carbon flux ***,parameters are not dependent on each other,and the results of sensitivity analysis usually vary due to different forest types and ***,global and representative sensitivity analysis would provide reliable information for simple ***:To determine the contributions of input parameters to gross primary productivity(GPP)and net primary productivity(NPP),regression analysis and extended Fourier amplitude sensitivity testing(EFAST)were conducted for Biome-BGCMuSo to calculate the sensitivity index of the parameters at four observation sites under climate gradient from ***:Generally,GPP and NPP were highly sensitive to C:Nleaf(C:N of leaves),Wint(canopy water interception coefficient),k(canopy light extinction coefficient),FLNR(fraction of leaf N in Rubisco),MRpern(coefficient of linear relationship between tissue N and maintenance respiration),VPDf(vapor pressure deficit complete conductance reduction),and SLA1(canopy average specific leaf area in phenological phase 1)at all observation *** sensitive parameters occurred at four observation sites within different climate *** and NPP were particularly sensitive to FLNR,SLA1 and Wint,and C:Nleaf in temperate,alpine and subtropical zones,***:The results indicated that sensitivity parameters of China's forest ecosystems change with climate *** found that parameter calibration should be performed according to plant functional type(PFT),and more attention needs to be paid to the differences in climate and *** findings contribute to determining the target parameters in field experiments and model calibration.

关键词： Sensitivity analysis Biome-BGCMuSo Productivity Regression analysis EFAST

High plasticity mechanism of high strain rate rolled Mg-Ga alloy sheets

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Journal of Materials Science & Technology 2022年第6期101卷 187-198页

作者： Wensen Huang Jihua Chen hongge Yan Weijun Xia Bin Su School of Materials Science and Engineering Hunan UniversityChangsha 410082China Hunan Provincial Key Laboratory of Spray Deposition Technology&Application Hunan UniversityChangsha 410082China

By observing the microstructure evolution of Mg-Ga alloy during tensile deformation, it is found that the prismatic slip and the pyramidal slip occur during the tensile process at room temperature, which finally leads to the plenty of dislocation accumulation. After 8% tensile deformation,the {1012} extension twin is the main way to coordinate the strain in the c-axis direction for the alloy with the Ga content lower than 2 wt.%, but the pyramidal slip is the main way to coordinate the strain along the c-axis direction for the alloy with the Ga content higher than 2 wt.%. The Ga addition can promote the activation of the non-basal slip, which is beneficial to the work-hardening of the alloy to achieve better plasticity. Dynamic precipitation can slightly reduce the increment of *** preparation method of high strain rate rolling(HSRR) is another important reason for the plasticity of magnesium alloy sheets, and it is an important embodiment of the application of the dislocation engineering concept in magnesium alloy. The non-basal dislocations derived from the HSRR deformation can provide the non-basal dislocation sources when magnesium alloy is deformed at room temperature,resulting in good ductility. This study can be used as a reference for preparing wrought magnesium alloy with high strength and high plasticity by Ga alloying and hot deformation.

关键词： High plasticity High strain rate rolling Mg-Ga Dislocation engineering

Remarkably improved hydrogen storage properties of nanocrystalline TiO2-modified NaAlH4 and evolution of Ti- containing species during dehydrogenation/hydrogenation

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Nano Research 2015年第2期8卷 533-545页

作者： Xin Zhang Yongfeng Liu Ke Wang Mingxia Gao hongge Pan iang University Hangzhou 310027 China

Adding a small amount of nanocrystalline TiO2@C （TiO2 supported on nano- porous carbon） composite dramatically decreases the operating temperatures and improves the reaction kinetics for hydrogen storage in NaAlH4. The nano- crystalline TiO2@C composite synthesized at 900 ℃ （referred as TiO2@C-900） exhibits superior catalytic activity to other catalyst-containing samples. The onset dehydrogenation temperature of the TiO2@C-900-containing sample is lowered to 90 ℃; this is 65 ℃ lower than that of the pristine sample. The dehydrogenated sample is completely hydrogenated at 115 ℃ and 100 bar of hydrogen pressure with a hydrogen capacity of 4.5 wt.%. Structural analyses reveal that the Ti undergoes a reduction process of Ti^4＋→Ti^3＋→Ti^2＋→Ti during the ball milling and heating processes, and further converts to Ti hydrides or forms Ti-Al species after rehydrogenation. The catalytic activities of Ti-based catalytic species decrease in the order Al-Ti-species 〉 TiH0.71 〉 TiH2 〉 TiO2. This understanding guides further improvement in hydrogen storage properties of metal alanates using nanocrvstalline transition metal-based additives.

关键词： hydrogen storage complex hydrides catalyst addition nanocrystalline TiO2@C

Preparation and catalytic effect of porous Co3O4 on the hydrogen storage properties of a Li-B-N-H system

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Progress in Natural Science:Materials International 2017年第1期27卷 132-138页

作者： You Li Yi Zhang Mingxia Gao hongge Pan Yongfeng Liu State Key Laboratory of Silicon Materials Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and Engineering Zhejiang University Center of Material Science National University of Defense Technology Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University

A porous Co3O4with a particle size of 1–3 μm was successfully prepared by heating Co-based metal organic frameworks MOF-74（Co） up to 500 °C in air atmospheric conditions. The as-prepared porous Co3O4significantly reduced the dehydrogenation temperatures of the LiBH4-2LiNH2system and improved the purity of the released hydrogen. The LiBH4-2LiNH2-0.05/3Co3O4sample started to release hydrogen at 140 °C and released hydrogen levels of approximately 9.7 wt% at 225 °C. The end temperature for hydrogen release was lowered by 125 °C relative to that of the pristine sample. Structural analyses revealed that the as-prepared porous Co3O4is in-situ reduced to metallic Co, which functions as an active catalyst, reducing the kinetic barriers and lowering the dehydrogenation temperatures of the LiBH4-2LiNH2system. More importantly, the porous Co3O4-containing sample exhibited partially improved reversibility for hydrogen storage in the LiBH4-2LiNH2system.

关键词： Hydrogen storage Complex hydrides Borohydrides Amides Dehydrogenation