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Journal of Materials Science & Technology 2018年第10期34卷 1719-1729页

作者： x.b. yang J.H. Chen G.H. Zhang L.P. Huang T.W. Fan Y. Ding x.W. Yu Center for High-Resolution Electron Microscopy College of Materials Sdence and Engineering Hunan University Changsha Hunan 410082 China Department of Applied Physics School of Physics and Electronics Hunan University Changsha Hunan 410082 China

by Using （scanning） transmission electron microscopy, localized-corrosion morphology variations of the AA7055 AIZn（Cu）Mg alloy with different thermal processes and their underlying microscopic causes were investigated systematically. Our study shows that the corrosion resistance of the nanoscale precipitates varies with their structure type and Cu-content. Just like the Al-matrix, the early-stage precipitates are corrosion resistant, as compared with the ηp/η-precipitates without high Cu-content. With a high Cu-content, however, the η-precipitates become most corrosion resistant among all phases involved. Hence, tailoring the precipitate microstructure and chemistry though thermal processes may change the overall corrosion morphology and improve corrosion resistance property of the alloy.

关键词： Aluminum alloys Precipitates Corrosion Electron microscopy

STUDY OF LONG-TERM GEOGRAPHICAL PATTERNS OF DISEASE RISK WITH LONG-TERM CLIMATOLOGIC DATA

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STUDY OF LONG-TERM GEOGRAPHICAL PATTERNS OF DISEASE RISK WIT...

Toughness and Hot/Wet Properties of a Novel Modified bMI/Carbon Fiber Composite

The ⅩⅤth International Plant Protection Congress

作者： x. LI and x.b. yang Department of Plant Pathology Iowa State University Ames IA 50011 USA

来源： cnki会议评论

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Journal of Materials Science & Technology 2001年第1期17卷 17-18页

作者： Zhang, b.Y. Chen, x.b. Li, P. Yi, x.S. beijing Inst. of Aeronaut. Mater. Beijing 100095 China

The toughness and hot/wet properties of a novel modified bismaleimide (bMI) 5428/carbon fiber composite were investigated. Results indicate that the prepared bMI/T700 composite has high toughness, excellent hot/wet properties and mechanical properties. The compression strength of the 5428/T700 composite after impact (CAl) is 260 MPa, and the hot/wet test results show that the long-term service temperature of 5428/T700 composite can maintain at 170°C.

关键词： bMI Toughness and Hot/Wet Properties of a Novel Modified bMI/Carbon Fiber Composite

Magnetic reversal and magnetic memory effect in melt-spun Pr_2Fe_(14)b/α-Fe nanocomposite ribbons

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Journal of Rare Earths 2015年第12期33卷 1303-1309页

作者：韩广兵苏浩高汝伟于淑云康仕寿朱明刚李卫 x.b.Liu School of Physics Shandong University Division of Functional Materials Central Iron & Steel Research Institute Department of Physics University of Texas at Arlington

The influence of CoCr addition on the microstructure and magnetic properties was investigated in nanocomposite Pr2Fel4b/a-Fe alloys prepared by melt spinning. It was shown that the magnetic properties of Pr2Fel4b/ct-Fe nanocomposite were im- proved by an addition of 10 at.% CoCr, in particular, coercivity （Hc） from 4.9 up to 5.3 kOe, maximum energy product （（bH）max） from 10.6 up to 13.9 MGOe, and remanence （Mr） from 94.2 up to 98.4 emu/g. The field dependencies of the reversible and irreversible magnetization components were derived from the recoil loops. Combining with the initial magnetization curves, the results indi- cated that the pinning of domain walls at the grain boundaries dominated the magnetization reversal in Pr2Fe14b/ct-Fe nanocomposite alloys. The magnetic memory effect was studied by measuring the magnetic moment relaxation at a cycle negative magnetic field with time interval of 600 s. The exchange-spring magnets with magnetic memory effect have a high potential for high density magnetic recording.

关键词： magnetization reversal exchange coupling magnetic memory effect nanocomposite alloys coercivity rare earths

LOW TEMPERATURE THERMODYNAMIC STUDY OF THE STAbLE AND METASTAbLE PHASES OF SILVER

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Acta Metallurgica Sinica(English Letters) 2007年第5期20卷 355-362页

作者： x.b. Li Y.Q. xie Y.Z. Nie H.J. Peng Research Center of Advanced Materials Xiangtan University Xiangtan 411105 China School of Material Science and Engineering University Changsha 410083 China Central South

The low temperature thermodynamics of the stable phase of silver was assessed by the polynomial model and Debye model from the experimental data available in the literature. by means of the constrained non-linear least squares curve fitting arithmetic, two sets of parameter values were determined. The expression of the thermodynamic functions cp（T） and G（T）-H （298.15K） at 0-298.15K were presented. Only the low temperature thermodynamics of the metastable phase of silver can be extrapolated by the Debye model The expression of the thermodynamic functions cp（T） at 0- 298.15K was presented.

关键词： silver thermodynamic heat capacity SGTE (Scientific Group Thermodata Europe)

Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying Mo biao Zheng Miaomiao Han Qin Zhong Wenwen yang Peng Gao Lezhi yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIbs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and x-ray photoelectron spectroscopy （xPS） analysis demonstrate the presence of more bC3and less b–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： x ray photoelectron spectroscopy

Data-driven evaluation of fatigue performance of additive manufactured parts using miniature specimens

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Journal of Materials Science & Technology 2019年第6期35卷 1137-1146页

作者： H.Y. Wan G.F. Chen C.P. Li x.b. Qi G.P. Zhang Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua Road Shenyang 110016 China School of Materials Science and Engineering University of Science and Technology of China Shenyang 110016 China Materials Manufacturing Qualification Group Corporate Technology Siemens Ltd. China Beijing 100102 China State Key Laboratory of Tribology Tsinghua University Beijing J00084 China

This overview firstly introduces the state-of-the-art research progress in length scale-related fatigue performance of conventionally-fabricated metals evaluated by miniature specimens. Some key factors for size effects sensitive to microstructures including the specimen thickness, grain size and a ratio between them are highlighted to summarize some general rules for size effects. Then, ongoing research progress and new challenges in evaluating the fatigue performance of additive manufactured parts controlled by location-specific defects, microstructure heterogeneities as well as mechanical anisotropy using miniature specimen testing technique are discussed and addressed. Finally, a potential roadmap to establish a data-driven evaluation platform based on a large number of miniature specimen-based experiment data,theoretical computations and the ’big data’ analysis with machine learning is proposed. It is expected that this overview would provide a novel strategy for the realistic evaluation and fast qualification of fatigue properties of additive manufactured parts we have been facing to.

关键词： Additive manufacturing Miniature specimen Fatigue Size effect Location-specific Data analysis

AAV2-PDE6b restores retinal structure and function in the retinal degeneration 10 mouse model of retinitis pigmentosa by promoting phototransduction and inhibiting apoptosis

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Neural Regeneration Research 2025年第8期20卷 2408-2419页

作者： Ruiqi Qiu Mingzhu yang xiuxiu Jin Jingyang Liu Weiping Wang xiaoli Zhang Jinfeng Han bo Lei Henan Eye Hospital Henan Provincial People’s HospitalPeople’s Hospital of Zhengzhou UniversityZhengzhouHenan ProvinceChina Eye Institute Henan Academy of Innovations in Medical ScienceZhengzhouHenan ProvinceChina branch of National Clinical Research Center for Ocular Disease Henan Provincial People’s HospitalZhengzhouHenan ProvinceChina Academy of Medical Science Zhengzhou UniversityZhengzhouHenan ProvinceChina

Retinitis pigmentosa is a group of inherited diseases that lead to retinal degeneration and photoreceptor cell ***,there is no effective treatment for retinitis pigmentosa caused by PDE6b ***-associated virus(AAV)-mediated gene therapy is a promising strategy for treating retinitis *** aim of this study was to explore the molecular mechanisms by which AAV2-PDE6b rescues retinal *** do this,we injected retinal degeneration 10(rd10)mice subretinally with AAV2-PDE6b and assessed the therapeutic effects on retinal function and structure using dark-and light-adapted electroretinogram,optical coherence tomography,and ***-independent acquisition-mass spectrometry-based proteomic analysis was conducted to investigate protein expression levels and pathway enrichment,and the results from this analysis were verified by real-time polymerase chain reaction and western ***2-PDE6b injection significantly upregulated PDE6βexpression,preserved electroretinogram responses,and preserved outer nuclear layer thickness in rd10 *** expressed proteins between wild-type and rd10 mice were closely related to visual perception,and treating rd10 mice with AAV2-PDE6b restored differentially expressed protein expression to levels similar to those seen in wild-type *** Encyclopedia of Genes and Genome analysis showed that the differentially expressed proteins whose expression was most significantly altered by AAV2-PDE6b injection were enriched in phototransduction ***,the phototransductionrelated proteins Pde6α,Rom1,Rho,Aldh1a1,and Rbp1 exhibited opposite expression patterns in rd10 mice with or without AAV2-PDE6b ***,bax.b.l-2,p-ERK/ERK,and p-c-Fos/c-Fos expression levels decreased in rd10 mice following AAV2-PDE6b *** data suggest that AAV2-PDE6b-mediated gene therapy promotes phototransduction and inhibits apoptosis by inhibiting the ERK signaling pathway and upr

关键词： apoptosis AAV2-PDE6b ERK1/2 gene therapy phototransduction proteomics rd10 retinitis pigmentosa

THE SEGREGATION OF SULFUR AND PHOSPHORUS IN NICKEL-bASE ALLOY 718

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Acta Metallurgica Sinica(English Letters) 1997年第6期10卷 510-514页

作者： J.x. Dong x.b. Liu x.S. xie and R.G. Thompson(Department of Materials Science and Engineering, University of Science and Technology beijing, beijing 100083, China)(University of Alabama at birmingham, birmingham AL35294-4461, USA) Univ of Science and Technology Beijing Beijing China

The segregation behavior of sulfur and phosphorus has been studied by means of scanning Auger microprobe (SAM) on microstructural interfaces,such as grain boundaries and carbide/matrix interfaces,The experimental results clearly reveal that sulfur strongly segregates on carbide/matrix interfaces,while phosphorus predominantly distributes on grain boundaries. Molybdenum tends to segregat on grain boundaries.

关键词： superalloy segregation,Alloy 718

铝电解槽磁流体稳定性判定:基于垂直磁场b_(z)算术平均值的研究

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有色金属（冶炼部分） 2025年第1期 66-71页

作者：杨溢贵阳铝镁设计研究院有限公司贵阳550081

研究了铝电解槽磁流体动力学(MHD)稳定性的判定标准,重点分析了垂直磁场bz算术平均值(b_(z0))在评估中的关键作用。通过文献综述、理论推导和实证研究,验证了b_(z0)作为MHD稳定性判定指标的有效性。采用某500 kA铝电解项目为案例,结果表... 详细信息

研究了铝电解槽磁流体动力学(MHD)稳定性的判定标准,重点分析了垂直磁场bz算术平均值(b_(z0))在评估中的关键作用。通过文献综述、理论推导和实证研究,验证了b_(z0)作为MHD稳定性判定指标的有效性。采用某500 kA铝电解项目为案例,结果表明b_(z0)对电解槽磁场设计具有显著指导作用。提出了基于b_(z0)的MHD稳定性判定模型,并对比了不同稳定性判据的优缺点,为铝电解槽的设计和优化提供了新思路和方法。

关键词：铝电解槽垂直磁场算术平均值磁流体动力学稳定性 b_(z0)