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A novel nanoporous Mg-Li material for efficient hydrogen generation

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Journal of Magnesium and Alloys 2022年第11期10卷 3054-3063页

作者： Jingru Liu Qingxi Yuan Wangxia Huang xiping song State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083PR China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese AcademyBeijing 100049PR China

Hydrogen generation material is a new kind of energy material that can supply hydrogen by reacting with water and is drawing more and more attention with the development of hydrogen economy. In this study, a novel nanoporous magnesium-lithium material prepared by a physical vapor deposition method exhibits an excellent hydrogen generation property. It generates hydrogen efficiently and quickly with saltwater, reaching a hydrogen generation amount of 962 mL g^(-1) and hydrogen generation rates of 60 mL g^(-1)min^(-1), 109 mL g^(-1)min^(-1),256 mL g^(-1)min^(-1) and 367 mL g^(-1)min^(-1) at 0 ℃, 25 ℃, 35 ℃ and 50 ℃, respectively. The nanoporous magnesium-lithium material is composed of a solid solution phase with a magnesium-lithium atomic ratio of 17:3. By synchrotron radiation analysis, the sizes of the nanopores are in the range of 100 nm ~ 600 nm with an average size of 280 nm, and the porosity is calculated to be ~42.4%. The improved hydrogen generation property is attributed to the nanoporous structure with a high specific surface area, and the addition of lithium element which acts as active sites in hydrogen generation process.

关键词： Nanoporous Mg-Li material Physical vapor deposition Hydrogen generation

Effect of vanadium content on hydrogen storage property in Ti-V-Cr alloys

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Rare Metals 2006年第z1期25卷 374-377页

作者： song xiping PEI Pei ZHANG Peilong CHEN Guoliang State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

The effect of vanadium content on the microstructure and hydrogen absorption/desorption properties in Ti-V-Cr alloys was studied. The results show that with the increase of vanadium content from 5at.%, 10at.% to 35at.%, the hydrogen absorption capacity increases gradually from 1.14wt.%, 1.57wt.% to 2.84wt.%, and the hydrogen desorption capacity also increase from 0.43, 0.64, to 1.59. This indicates that the alloy with 35at.% vanadium content has the most optimum hydrogen storage capacity among these alloys. The microstructure observation also indicates that the alloy with 35at.% vanadium turns to be the single-phase alloy of the BCC solid solution. Furthermore, with the increase of vanadium content the pressure plateau becomes more distinguishing and shifts to lower pressure level gradually. The kinetics of hydrogen absorption was also found to be dependent with the vanadium content in these discussed alloys.

关键词： hydrogen storage alloy vanadium kinetics

In situ scanning electron microscopy observation of deformation and fracture behavior of Ti-3Zr-2Sn-3Mo-25Nb alloy

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Rare Metals 2012年第4期31卷 318-322页

作者： Ma, Xiqun Yu, Zhentao Han, Yong song, xiping Sun, Qiaoyan Northwest Institute for Nonferrous Metal Research Xi'an 710016China State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi'an 710049China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeiiing 100083China

The plastic deformation and fracture processes of Ti-3Zr-2Sn-3Mo-25Nb alloy for surgical implants were directly observed by in situ scanning electron microscopy(SEM).The effect of phase transformations on deformation-induced martensitic transformation accompanying the cyclic tensile fracture processes was *** results reveal that the metastable alpha martensites(α″) promotes deformation-induced martensitic transformation to ductile fracture,whereas the omega(ω) and alpha(α) phases drastically prevent slip dislocation and deformation-induced martensitic transformation to brittle fracture.

关键词： titanium alloys metastable phases martensitic phase transformation deformation

A new microfiltration membrane with three-dimensional reticular architecture for Nano-pollutants removal from wastewater

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Progress in Natural Science:Materials International 2021年第3期31卷 414-419页

作者： Wanyuan Gui Jingru Liu xiping song Hui Zhang Junpin Lin Benli Luan National Center for Materials Service Safety State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Department of Chemistry Western University Qian Xuesen Laboratory of Space Technology China Academy of Space Technology

This research provides a new insight into designing next-generation filtration materials for Nano-pollutants removal from wastewater, and potentially for gas/solid or liquid/solid separation in corrosive *** the high corrosion and oxidation resistance, Ti–40 Al–10 Nb–10 Cr porous alloy was prepared by powder metallurgy and used as a mechanical support with a pore size of around 10 μm. Subsequently, metallic Zn nanoparticles was coated on the Ti–40 Al–10 Nb–10 Cr porous framework by means of chemical vapor deposition,obtaining a novel microfiltration membrane with three-dimensional reticular architecture. Furthermore, the influence of Zn coating on surface morphology, pore feature, and filtration capability of Ti–40 Al–10 Nb–10 Cr porous alloy was investigated. It is of note that the as-prepared microfiltration membrane exhibits an excellent Nanopollutants filtration efficiency of greater than 99.989% from wastewater. Most importantly, such a threedimensional reticular architecture provides excellent structural stability, allowing the reutilization of the microfiltration membrane for at least 200 filtration cycles of wastewater treatment.

关键词： Porous materials Microfiltration membrane Separation and purification Intermetallic materials Water purification

Strain rate sensitivity of tensile properties in high Nb containing TiAl alloys

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Journal of University of Science and Technology Beijing 2005年第6期12卷 535-539页

作者： Jianfeng Gao Xiangjun Xu Junpin Lin xiping song Yanli Wang Guoliang Chen State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

The effect of strain rate on the yield strength of high Nb containing TiAl alloy was studied. The results show that the strain rate sensitivity varies with the test temperature, and the yield strength is not sensitive to the strain rate at room temperature but significantly sensitive to the strain rate at high temperature. An increase of the strain rate or a decrease of the temperature results in an obvious change of fracture mode. It is found that the strain rate sensitivity of this alloy varying with temperature is due to the dislocation climb generated at high temperature.

关键词： TiAl alloys strain rate tensile properties thermal activation

Coarsening behavior of γ' particles in a nickel-base superalloy

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Rare Metals 2009年第2期28卷 197-201页

作者： Li, Hongyu Zuo, Lingli song, xiping Wang, Yanli Chen, Guoliang State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

The coarsening behavior of γ particles in a nickel-base superalloy FGH95 was investigated by means of experimental observations and growth kinetics calculations. The results show that when aging at 1000,1080 and 1140°C for different times,the relation of average particle size to time obeys the cube law ( a /2)3= kt,where k is 15.49 × 103,77.5 × 103 and 230.04 × 103 nm3/min,respectively. The particle size distributions are better fit to the LSW theoretical distributions when aging at 1000°C within 1440 min....

关键词： nickel-base superalloys γ particles coarsening behavior particle size distribution activation energy

Effect of rapid quenching on the microstructure and electrochemical characteristics of La_(0.6)Ce_(0.4)Ni_(3.6)Co_(0.65)Mn_(0.4)Al_(0.2)Ti_(0.05_(FeB)_(0.1) hydrogen storage alloy

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Rare Metals 2010年第6期29卷 593-596页

作者： ZHANG Peilong song xiping WANG Xiuli PEI Pei LUO Guiping TU Jiangping CHEN Guoliang State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 000China Whole Win(Beijing) Materials Sci.& Tech.Co. Ltd.Beijing 100083China Department of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China

In order to improve the cycling stability of AB5 type alloy electrodes,rapid quenching technology and new alloy composition design were employed.A hydrogen storage alloy with nominal composition La0.6Ce0.4Ni3.6Co0.65Mn0.4Al0.2Ti0.05（FeB）0.1 was prepared by vacuum magnetic levitation melting under high purity argon atmosphere,followed by rapid quenching at different cooling *** results show that all alloys exhibit the single-phase CaCu5-type *** tests indicate that rapid quenching can slightly improve the cycling life of the ***,the high-rate dischargeability of the quenched alloys is lower than that of the as-cast alloy.

关键词： hydrogen storage alloys electrochemical properties rapid quenching microstructure

千年漆艺薪火相传——宋西平&张丹母女的“漆艺人生”

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现代艺术 2023年第5期 48-51页

作者：宋西平张丹不详

宋西平的“漆”彩人生宋西平的漆艺工作室,有着各种形状的精美漆器,它们在灯光下泛着温润的色泽,而这些漆器,大多数诞生于国家级非物质文化遗产项目成都漆艺代表性传承人宋西平手中。成都漆艺,四川省成都市传统手工技艺,国家级非物质文... 详细信息

宋西平的“漆”彩人生宋西平的漆艺工作室,有着各种形状的精美漆器,它们在灯光下泛着温润的色泽,而这些漆器,大多数诞生于国家级非物质文化遗产项目成都漆艺代表性传承人宋西平手中。成都漆艺,四川省成都市传统手工技艺,国家级非物质文化遗产之一。发于商周,成熟于汉,兴盛于唐,绵延于宋、明、清而不断发展,历史悠久。

关键词：传统手工技艺西平商周薪火相传漆艺代表性传承人漆器工作室

Characterization of γ′ precipitates in a nickel base superalloy quenching from aging temperature at different rates

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Rare Metals 2010年第2期29卷 204-208页

作者： LI Hongyu, song xiping, WANG Yanli, and CHEN Guoliang State Key Lab for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China State Key Lab for Advanced Metals and Materials University of Science and Technology Beijing

The characteristics of γ′ precipitates in a superalloy quenched from 1050°C at different rates were investigated using field emission scanning electron microscope（FESEM）.When quenched from 1050°C, the size of primary aging γ′ precipitates has a small increase in the specimens that experienced iced-brine-quenching, oil-quenching, and air-cooling-quenching conditions and a drastic increase in the specimen that experienced a furnace-cooling-quenching *** cooling γ′ precipitates have unimodal distributions after quenching at the air-cooling rate and bimodal distributions after quenching at the furnace-cooling rate, but there are not these distributions in the specimens that experienced iced-brine-quenching and oil-quenching *** aging at 760°C, the size of primary aging γ′ precipitates appears unaffected in the specimens that experienced iced-brine-quenching, oil-quenching, and air-cooling-quenching ***, it has a drastic increase in the specimen that experienced a furnace-cooling-quenching condition, and it is interesting that the bigger cooling γ′ precipitates have a coalescence and octodendritic *** microhardness study indicates that the hardness has no variation in the specimens that experienced iced-brine-quenching, oil-quenching, and air-cooling-quenching conditions and has a drastic decrease in the specimens that experienced a furnace-cooling-quenching condition and obtains the minimum microhardness value 390.8 HV.

关键词： superalloys precipitates quenching rate microhardness