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中国有色金属学会会刊：英文版 2009年第2期19卷 364-371页

作者：张羊换赵栋梁董小平祁焱郭世海王新林 Department of Functional material research Central Iron and Steel Research Institute School of material Inner Mongolia University of Science and Technology School of materials science and engineering University of Science and Technology Beijing

The La-Mg-Ni system PuNi3-type La0.5Ce0.2Mg0.3Co0.4Ni2.6-xMnx(x=0,0.1,0.2,0.3,0.4) hydrogen storage alloys were prepared by casting and rapid quenching. The effects of the rapid quenching on the structure and electrochemical characteristics of the alloys were studied. The results obtained by XRD,SEM and TEM indicate that the as-cast and quenched alloys mainly consist of two major phases,(La,Mg)Ni3 and LaNi5,as well as a residual phase LaNi. The rapid quenching does not exert an obvious influence on the phase composition of the alloys,but it leads to an increase of the LaNi5 phase and a decrease of the(La,Mg)Ni3 phase. The as-quenched alloys have a nano-crystalline structure,and the grain sizes of the alloys are in the range of 20-30 nm. The results by the electrochemical measurements indicate that both the discharge capacity and the high rate discharge(HRD) ability of the alloy first increase and then decrease with the variety of quenching rate and obtain the maximum values at the special quenching rate which is changeable with the variety of Mn content. The rapid quenching significantly improves the cycle stabilities of the alloys,but it slightly impairs the activation capabilities of the alloys.

关键词：纳米晶结构电极合金电化学特性快淬合金 LaNi5 人力资源开发快速冷却香格里拉

Effects of rapid quenching on structure and cycle stability of La-Mg-Ni-Co type hydrogen storage alloy

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Rare Metals 2006年第z1期25卷 207-212页

作者： DONG Xiaoping Lü Fanxiu ZHANG Yanghuan YANG Liying FENG Meng WANG Xinlin School of material science and engineering University of Science and Technology Beijing Beijing 100083 China Department of Functional material research Central Iron and Steel Research Institute Beijing 100081 China School of Material Science and Engineering University of Science and Technology Beijing Beijing 100083 China Department of Functional Material Research Central Iron and Steel Research Institute Beijing 100081 China School of Mateials Inner Mongolia University of Science and Technology Baotou 01401 China School of Material Science and Engineering University of Science and Technology Beijing Beijing 100083 China Department of Functional Material Research Central Iron and Steel Research Institute Beijing 100081 China Department of Functional Material Research Central Iron and Steel Research Institute Beijing 100081 China

In order to improve the cycle stability of La-Mg-Ni-Co type alloy electrode, rapid quenching technology was employed. The effects of rapid quenching on the microstructure and cycle stability of the alloy were investigated. The obtained results show that the La2Mg(Ni0.85Co0.15)9M0.1 (M=B, Cr) alloy electrodes are composed of (La, Mg)Ni3 phase, LaNi5 phase and a small amount of the LaNi2 phase. A trace of the Ni2B phase exists in the as-cast MB alloy, and the Ni2B phase in the alloy nearly disappears after rapid quenching. Rapid quenching technology can slightly improve the cycling life of the alloy. When the quenching rate increases from 0 m·s-1 (As-cast is defined as quenching rate of 0 m·s-1) to 30 m·s-1, the cycle lives of the MB, MCr alloys enhance from 86 and 87 cycles to 106 and 119 cycles, respectively. On the other hand, the average capacity decay rates of the MB, MCr alloys decrease from 1.7172 and 1.7178 mAh·g-1·cycle-1 to 1.5751 and 1.3060 mAh·g-1·cycle-1 after 86 charge-discharges cycling, respectively.

关键词： rapid quenching La-Mg-Ni-Co type hydrogen storage alloy structure characteristics cycle stability

Hydrogen trapping in high strength 0Cr16Ni5Mo martensitic stainless steel

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Journal of Central South University 2015年第11期22卷 4128-4136页

作者：孙永伟陈继志刘军 College of materials science and Chemical engineering Harbin engineering University Luoyang Ship material research Institute

Hydrogen trapping behavior has been investigated by means of thermal desorption spectroscopy(TDS) for a high strength steel after it was tempered at the temperatures of 430 °C, 500 °C and 520 °C, respectively. The loss of ductility was characterized by slow strain rate test(SSRT) and microscopic observation. It shows that with hydrogen charging the fracture feature transfers from ductile to brittle, resulting in the loss of ductility. Undeformed microstructure immediately beneath the fracture surface in charged specimen corresponds to badly ductility compared to the obviously streamline plastic deformation in uncharged specimen. The activation energies for the peaks present in the TDS analysis are calculated for all tested steel and the activation energies for all temperature peaks are similar, corresponding to the similar types of hydrogen traps.

关键词： martensitic stainless steel hydrogen trapping ther

功函促进钼基异质结电催化剂的电子结构重整提升其析氢反应活性（英文）

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science China materials 2025年第1期 189-198页

作者：陈想冯帅谢松苗亚萍高标张旭明黄莉李筠 Paul K.Chu 彭祥 Hubei Key Laboratory of Plasma Chemistry and Advanced materials Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education School of Materials Science and Engineering Wuhan Institute of Technology School of Textile science and engineering Xi'an Polytechnic University The State Key Laboratory of Refractories and Metallurgy Institute of Advanced Materials and Nanotechnology Wuhan University of Science and Technology Guizhou Wujiang Hydropower Development Co. Ltd. Department of Physics Department of Materials Science and Engineering and Department of Biomedical Engineering City University of Hong Kong

Mo基催化剂在电催化析氢反应（HER）中具有巨大应用潜力.然而,其活性位点的暴露不足、极强的氢吸附能力导致其催化性能未能充分体现.本文在碳布上构筑了Mo2N–MoSe2异质结（MNS）,以增强Mo基催化剂的HER活性.由于MNS中的Mo2N具有较低的...

Mo基催化剂在电催化析氢反应（HER）中具有巨大应用潜力.然而,其活性位点的暴露不足、极强的氢吸附能力导致其催化性能未能充分体现.本文在碳布上构筑了Mo2N–MoSe2异质结（MNS）,以增强Mo基催化剂的HER活性.由于MNS中的Mo2N具有较低的功函数,能够在异质界面产生内建电场,显著提高了其在HER中电荷转移效率.此外,MNS中原子之间的强电子相互作用优化了Mo位点的电子结构,降低了氢吸附能力,进一步增强了其本征催化活性.因此, MNS催化剂产生20 m A cm-2和1 A cm-2的析氢电流密度所需的过电位仅为65和210 mV, Tafel斜率仅为96 mV dec-1.此外, MNS在1 A cm-2电流密度下稳定运行240小时后,形貌、结构和性能均无明显变化.以上研究结果为工业大电流制氢所需的非贵金属基电催化剂的设计和合成提供了新思路.

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High He-ion irradiation resistance of CrMnFeCoNi high-entropy alloy revealed by comparison study with Ni and 304SS

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Journal of materials science & Technology 2019年第3期35卷 300-305页

作者： Lixin Yang Hualong Ge Jian Zhang Ting Xiong Qianqian Jin Yangtao Zhou Xiaohong Shao Bo Zhang Zhengwang Zhu Shijian Zheng Xiuliang Ma Shenyang National Laboratory for materials science Institute of Metal Research Chinese Academy of Sciences School of material science and engineering University of Science and Technology of China School of Energy research Xiamen University School of material science and engineering Lanzhou University of Technology

High entropy alloys(HEAs) have presented potential applications in nuclear power plants owing to their novel atomic structure based high irradiation resistance. However, understanding of He-ion irradiation of HEAs is still lacking. In this work, we reveal He-ion irradiation resistance of HEA CrMnFeCoNi by comparison study with a pure Ni and a 304 stainless steel(304SS). It is found that the damage structure in the three materials can be characterized with He bubbles and stacking faults/stacking fault tetrahedrons((SFs/SFTs), which show a similar depth distribution after He-ion irradiation at both RT and 450℃.Although the He bubbles have a similar size about 2nm after irradiation at RT, the He bubble sizes of the HEA, 304SS, and Ni increase to 4.0±0.9,5.3±1.0 and 6.7 ±1.0 nm after irradiation at 450℃, respectively. Moreover, the density of SFs/SFTs displays in an order of Ni materials, however,compared to RT, after irradiation at 450℃, the Ni presents softening, while the 304SS, especially the HEA,shows further hardening. Thus, the HEA CrMnFeCoNi possesses the smallest He bubble size, the densest SFs/SFTs, and the highest hardening, indicating the best structural stability, as well as the best He-ion irradiation resistance, which can be attributed to its low mobility of He atoms and point defects.

关键词： High entroy alloy(HEA) CrMnFeCoNi He-ion Irradiation Hardening

Effect of β-TCP Ceramic on the Total Protein of Osteoblasts

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Journal of Wuhan University of Technology(materials science) 2007年第1期22卷 98-101页

作者：齐志涛 The Bio-material research and engineering center Wuhan University of Technology

The osteoblast with the β-TCP ceramic was co-cultured. Scanning electron microscopy shows the cells adhered onto β-TCP ceramic surface and grew better, proving the β-TCP ceramic has a biocompatible property. The Coomassie brilliant blue G-250 stain shows that the total protein in the experimental groups was highly increased compared with the control group （p〈0.05）. Flow-cytometric analysis shows that β-TCP ceramic could promote the osteoblast transform from the G0/G1 phase to S phase. Those all demonstrate the product of the degradation of the β-TCP ceramic may take part in the protein metabolism of osteoblast.

关键词： β-TCP ceramic osteoblast flow-cytometric analysis

Oxidation kinetics of ilmenite concentrate by non-isothermal thermogravimetric analysis

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Journal of Iron and Steel research International 2017年第7期24卷 678-684页

作者： Ying-yi Zhang Wei Lv Xue-wei Lv Chen-guang Bai Ke-xi Han Bing Song College of material science and engineering Chongqing University Panzhihua Iron and Steel research Institute

The non-isothermal oxidation experiments of ilmenite concentrate were carried out at various heating rates under air atmosphere by *** oxidation kinetic model function and kinetic parameters of apparent activation energy（Ea）were evaluated by Málek and Starink *** results show that under air atmosphere,the oxidation process of ilmenite concentrate is composed of three stages,and the chemical reaction（G（α）=1-（1-α）~2,whereαis the conversion degree）plays an important role in the whole oxidation *** the first stage（α=0.05-0.30）,the oxidation process is controlled gradually by secondary chemical reaction with increasing conversion *** the second stage（α=0.30-0.50）,the oxidation process is completely controlled by the secondary chemical reaction（G（α）=1-（1-α）~2）.At the third stage（α=0.50-0.95）,the secondary chemical reaction weakens gradually with increasing conversion degree,and the oxidation process is controlled gradually by a variety of functions;the kinetic equations are G（α）=（1-α）^（-1）（β=10K·min^（-1）,whereβis heating rate）,G（α）=（1-α）^（-1/2）（β=15-20K·min^（-1））,and G（α）=（1-α）^（-2）（β=25K·min^（-1））,*** the whole oxidation process,the activation energies follow a parabolic law with increasing conversion degree,and the average activation energy is 160.56kJ·mol^（-1）.

关键词： Ilmenite Oxidation kinetics Phase composition Málek method Starink method

Wrinkle-crease interaction behavior simulation of a rectangular membrane under shearing

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Acta Mechanica Sinica 2011年第4期27卷 550-558页

作者： C.-G.Wang.H.-F.Tan.X.-D.He center for Composite materials,Harbin Institute of Technology,150080 Harbin,China Post-doctoral research center in material science and engineering,Harbin Institute of Technology,150001 Harbin,China center for Composite materials Harbin Institute of Technology Harbin China Post-doctoral research center in material science and engineering Harbin Institute of Technology Harbin China

Wrinkling analysis of a rectangular membrane with a single crease under shearing is performed to understand the wrinkle-crease interaction behaviors. The crease is considered by introducing the residual stresses from creasing and the effective modulus into the baseline configuration with assumed circular cross-sectional crease geometry. The wrinkling analysis of the creased membrane is then performed by using the direct perturb-force （DP） simulation technique which is based on our modified displacement components （MDC） method. Results reveal that the crease may influence the stress transfer path in the membrane and further change the wrinkling direction. The crease appears to improve the bending stiffness of the membrane which has an effective resistance on the wrinkling evolution. The effects of the crease orientation on wrinkle-crease interaction are studied toward the end of this paper. The results show that the wrinkling amplitude, wavelength, and direction increase as the crease orientation increases, and the wrinkling number decreases with the increasing crease orientation. These results will be of great benefit to the analysis and the control of the wrinkles in the membrane structures.

关键词： Membrane structure - Wrinkle-crease interac-tion Membrane wrinkling Creased membrane

Preparation of silver nanoparticle via active template under ultrasonic

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Transactions of Nonferrous Metals Society of China 2006年第6期7卷 1348-1352页

作者：郑敏王作山朱亚伟 College of material engineering Soochow University Powder engineering research center North China University

A novel method was described for the production of silver nanoparticle by using nano-carbon as active *** ultrasonic condition was used to assure the active effect of the template and achieve an even and stable micro-reactor system,therefore yield uniform silver nanoparticle without obvious *** laser granularity instrument measurement,the silver nanoparticles show a mean diameter of 20.4 nm and narrow distribution between 18.7 nm and 23.0 nm according to the optimum *** spherical morphology can be observed by transmission electron microscopy(TEM).X-ray diffraction analysis indicates that Ag+ is deoxidized to form metal Ag during producing precursor,subsequent calcinations promote phase transformation from nonholonomic crystal to complete cubic crystal,which is consistent with the standard JCPDS card of *** results reveal that the nano-carbon in active template system not only exerts micro-reactor and steric stabilization effect,but also acts as reducing agent during the reaction.

关键词： silver nanoparticle active template nano-carbon ultrasonic agglomeration

Effect of nanoclay on properties of porous PVdF membranes

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Transactions of Nonferrous Metals Society of China 2011年第A01期21卷 141-147页

作者： Hae-Young HWANG Deuk-Ju KIM Hyung-Jun KIM Young-Taik HONG Sang-Yong NAM School of materials science and engineering Engineering Research Institute i-Cube Center Gyeongsang National University Fuel Cell research center Korea Institute of Science and Technology Seoul 136-791 Korea Energy material research center Korea Research Institute of Chemical Technology Daejeon 305-600 Korea

The main requirements for battery separators are high porosity which can serve pathways of lithium ion and space for gel electrolytes to impregnate in a membrane and mechanical strength to allow easy handling for battery assembly. Generally, it appears the trade-off relationship between the porosity and mechanical strength of the membrane. PVdF composite membranes containing nano-size clays were used to improve the mechanical strength of the membrane without affecting the membrane porosity. The composite membranes were prepared by phase inversion method controlling the membrane preparation conditions such as retention time. The resultant membranes show increased mechanical properties with similar membrane porosity around 80 % compared to the pristine PVdF membrane. Incorporation of nonoclay can be considered as an effective method to improve the mechanica! strength in porous membrane supports, especially in a separator.

关键词： Li-ion battery separator poly(vinylidene fluoride) nanocomposite