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Science china Chemistry 2006年第3期49卷 238-245页

作者： FU Yubin1,2. ZHANG Lide1 & ZHENG Jiyong2.1. institute of Solid State Physics, china Academy of Sciences, Hefei 2.0031, china 2. luoyang ship material research institute, luoyang 471.39, china 1. institute of Solid State Physics China Academy of Sciences Hefei 230031 China 2. luoyang ship material research institute Luoyang 471039 China

Lipid molecules can self-assemble into a tubular structure, which is formed by tightly wound helical ribbons. Lipid tubules are utilized as a precursor to fabricate a novel Ni-decorated helical ribbon composite microstructure in a high yield by electroless deposition. The microstructure carries Ni nanoparticles on the flat face and wires at the edge of helical ribbon, in which the average size of nanoparticles is about 40―60 nm, and the wires are of a layered structure strongly correlated with a multi-bilayer structure in the lipid membrane. Compared with the tubular precursor, the Ni-decorated composite microstructure becomes short and irregular shapes due to the breakage in the deposition, and its formation is largely bound up with the tubular helical structure and the different catalytic process. Finally, the helical composite microstructure would have a potential application in the development of electric active materials.

关键词： molecular self-assembly, lipid tubule, helical ribbon, electroless deposition, nanoparticles and wires, composite microstructure.

research on Superplasticity and Superplastic Extrusion of MB2. Magnesium Alloy

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Journal of materials Science & Technology 2001年第1期17卷 147-148页

作者： Fuxiao CHEN Juanhua SU Yunlin YANG and Hongtao in Dept. of material and Engineering, luoyang {2. of Technology, luoyang 417039, china luoyang Inst Technol Dept Mat & Engn Luoyang 417039 Peoples R China

The superplastic flow characteristics of hot extruded MB2. Mg alloy under the conditions of tension are studied. The effects of deformation temperature and strain rate on superplasticity are analyzed. On the other han... 详细信息

关键词： deformation temperature flow characteristics Mg alloy strain rate

Deposition features of Ni on self-assembled microtubule template from biolipid by electroless method

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Science china Chemistry 2004年第3期47卷 228-234页

作者： FU Yubin1,2. ZHANG Lide1, ZHENG Jiyong2. FU Shangang3 & ZHU Mingwei3 1. institute of Solid State Physics, Chinese Academy of Sciences, Hefei 2.0031, china {2., luoyang 471.39, china 3. College of Life Science, Henan Normal University, Xinxiang 453002. china 1. institute of Solid State Physics Chinese Academy of Sciences 230031 Hefei China 2. luoyang ship material research institute 471039 Luoyang China 3. College of Life Science Henan Normal University 453002 Xinxiang China

Diacetylenic glycero-phosphatidylcholine is a chiral molecule with amphiphilic property, and it can self-assembly into a lipid microtubular structure. The lipid microtubule is a stable structure formed by tightly wound helical ribbons, and the ribbon-wrapping patterns have a significant effect on their chemical deposition on the microtubules. The deposition of colloidal Pd catalyst occurs mainly on the helical edge of the wound helical ribbons to form helical deposition lines of colloidal Pd particles in the interior and exterior of the lipid microtubules, resulting in an uneven chemical deposition of Ni on the microtubules. Catalyzed by as-deposited colloidal Pd, metallized Ni microtubules are characterized by a helical form, which may be in relation to inner stress due to the thickness difference or the different deposition processes. The observation of microtom shows that metallized tubules have a hollow structure. Some metallized tubules have a kind of coaxial double layer structure observed in the direct experiment evidence, indicating that metallization can occur in the inner and outer surface of the lipid tubules. Both lipid microtubules and metallized microtubules can be used as vehicles for encapsulating biological active molecules to control their release and to develop micro-components in biological and mechanical systems. Keywords molecular self-assembly - lipid microtubules - helical pattern - site-specific deposition - electroless metallization

关键词： molecular self-assembly, lipid microtubules, helical pattern, site-specific deposition, electroless metallization.

ELECTROCHEMICAL PROPERTIES AND MICROSTRUCTURE OF Ir-Ta-Ti METAL OXIDE COATED TITANIUM ANODES

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Acta Metallurgica Sinica(English Letters) 2001年第6期14卷 457-462页

作者： T. Y. Wang, L.K. Xu and G.Z. Chen (Qingdao Branch of luoyang ship {2. research institute, Qingdao 2.6071, china) Qingdao Branch Luoyang Ship Mat. Res. Inst. Qingdao 266071 China

Ir-Ta-Ti metal oxide coated titanium anodes prepared by thermal decomposition at different calcination temperatures were characterized by scanning electron microscopy, cyclic voltammetry, and accelerated life test, while the consumption rate of an anode was also measured in seawater. The SEM results indicate that all oxide layers exhibit a cracked-mud morphology influenced by calcination temperature. Voltammetric charge (q), obtained by integration of I-E curve, is proportional to the number of surface active sites, and can be taken as a measure of the active surface area of oxide layer. It is found that q* decreases linearly with the increase of calcination temperature, and reaches a maximum at 450℃. The anode prepared at 500℃ possesses the best anodic stability and the longest service life in 1M H2.SO4 at an anodic current density of 2./cm2. Owing to good corrosion resistance and low consumption rate in seawater, Ir-Ta-Ti metal oxide coated titanium anodes belong to insoluble material with excellent electrocatalytic activity, which are outstanding candidates for using as anode in impressed current cathodic protection systems.

关键词： anodic stability accelerated life consumption rate cyclic voltammetry

Corrosion Electrochemical Behavior of the NiCoCrA1Y/ZrO_2.Coating in Natural Seawater

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稀有金属材料与工程 2012年第S1期41卷 250-252页

作者： Li Xiangbo,Xing Lukuo,Huang Guosheng,Hu Xuelei Science and Technology on Marine Corrosion and Protection Laboratory,luoyang ship {2. research institute(LSMRI),Qingdao 2.6101,china LSMRI Sci & Technol Marine Corros & Protect Lab Qingdao 266101 Peoples R China

NiCoCrAlY/ZrO2.coatings were obtained by cold *** gas was used as processing gas(750℃,3.8 MPa).The corrosion electrochemical behavior of the coating on 907A steel in seawater was studied using open circuit potential monitoring,potentio-dynamic polarization and electrochemical impedance *** showed that the as-deposited NiCoCrAlY/ZrO2.coatings,which were formed through significantly plastic deformed particles during impact,presented a dense microstructure and a high *** indicated that the formation of the stable and consecutive oxidation film,which has an outstanding anti-corrosion performance,was contributed to the compact structure of cold spray *** pervasion of seawater was held back resulting from the cooperation of the oxidation film and the scale-like structure.

关键词： cold spraying NiCoCrA1Y/ZrO2 coating nitrogen gas corrosion oxidation film

Damping Property of Supersaturated ZnA12.Ce Alloy during Natural Aging

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Journal of materials Science & Technology 2001年第1期17卷 9-10页

作者： Jingpei XIE Yaomin ZHU Yanpei SONG Xiaoying WANG and Quande CHEN Dept.of material Engineering , luoyang {2. of Technology, luoyang 471.39. china Dep. of Mater. Eng. Luoyang Inst. of Technol. Luoyang 471039 China

The microstructures and damping property of supersaturated ZnA12.Ce alloy during natural aging have been investigated. H-800 TEM was mainly used to research the microstructures. The relationship between microstructure and damping property was primarily studied. The results showed that solution plus natural aging was the best heat treatment, which could improve the damping property. Both continuous precipitation and cellular reaction occurred during the aging. Continuous precipitation follows the sequence: β→spherical GP zones→elliptical GP zones→intermediate phase R→n. The cellular reaction can be written as follows:β→a+n+ε.

关键词： Ce Damping Property of Supersaturated ZnA12.Ce Alloy during Natural Aging

INFLUENCE OF AUSTENITIZING TEMPERATURE ON IMPURITY SEGREGATION ALONG GRAIN BOUNDARIES IN STEEL 4330M

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Acta Metallurgica Sinica(English Letters) 1991年第3期4卷 218-220页

作者： SHI Qunxing luoyang ship {2. research institute,luoyang,chinaWU Jiansheng LIN Dongliang Shanghai Jiaotong University,Shanghai,china

The effect of austenitizing temperature on segregation of impurities along grain boundaries in steel 4330M has been examined by *** impurity segregation was computed *** showed that the quantity of impurity segregation changed with the austenitizing *** limitation of the McLean′s expression for equilibrium segrega- tion was discussed.

关键词： steel 4330M impurity segregation sulphur austenitizing temperature

research progress of surface treatment for titanium alloys

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Research progress of surface treatment for titanium alloys

The Effects of Aging Precipitation on the Recrystallization of CuNiSiCr Alloy

第十届中俄双边新材料新工艺研讨会

作者： ZHANG Wenyu luoyang ship {2. research institute luoyang 471.39 china

＜正＞Titanium and its alloys possess high specific strength,good corrosion resistance,good high temperature *** and its alloys are widely used in the space flight and aeronautic industries,the martial industry and domestic *** their low hardness and wear-resistance confined the further applications of these *** is possible to improve the surface properties of these materials by proper surface *** this paper,the applications of several surface treatment technologies on titanium and its alloys were summarized.

关键词： titanium and its alloys surface treatment laser

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Journal of Wuhan University of Technology(materials Science) 2005年第1期20卷 21-24页

作者：雷静果刘萍 College of material Xi' an University of Technology Xi' an 710048 China School of Materials Science and Engineering Henan University of Scienc e & Technology Luoyang 471003 China

The interaction between precipitation and recrystallization and its effect on t he properties of the Cu-Ni-Si-Cr alloy during aging were *** result s show that the deformation results in much more dispersed precipitation of the phases. The precipitations have accelerating or retarding effects on the recryst allization. On the formation and growth of recrystallization, the precipitated p hases are coarsed or dissolved in front of grain boundaries following a re-prec ipitation in the recrystallization area.

关键词： CuNiSiCr alloy aging precipitation recrystallization

Plasma arc welding engineering research present situation and application

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Plasma arc welding engineering research present situation an...