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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 471039, 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.

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 471039, 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.

Synthetically adaptive robust filtering for satellite orbit determination

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Science china Earth Sciences 2004年第7期47卷 585-592页

作者： YANG Yuanxi1 & WEN Yuanlan2.1. Xi’an research institute of Surveying and Mapping, Xi抋’an 710054,{2. 2. College of Aerospace and material Engineering, National University of Defense Technology, Changsha 410073,{2. 1. Xi’an research institute of Surveying and Mapping 710054 Xi’an China 2. College of Aerospace and material Engineering National University of Defense Technology 410073 Changsha China

The quality of the satellite orbit determination is rested on the knowledge of per-turbing forces acting on the satellite and stochastic properties of the observations, and the ability of controlling various kinds of errors. After a brief discussion on the dynamic and geometric orbit determinations, Sage adaptive filtering and robust filtering are reviewed. A new synthetically adaptive robust filtering based on a combination of robust filtering and Sage filtering is *** is shown, by derivations and calculations, that the synthetically adaptive robust filtering for orbit determination is not only robust but also simple in calculation. It controls the effects of the outliers of tracking observations and the satellite dynamical disturbance on the parameter esti-mates of the satellite orbit.

关键词： satellite orbit, Sage filtering, adaptive orbit determination, robust estimation.

Effect of Cold Rolling on Microstructure and Mechanical Properties of AISI 301LN Metastable Austenitic Stainless Steels

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Journal of Iron and Steel research International 2012年第10期19卷 59-63页

作者： HUANG Jun-xia1, YE Xiao-ning1, XU Zhou2.(1. Shanghai Baosteel research institute, Shanghai 2.0431,{2. 2. School of material Science and Engineering, Shanghai Jiao Tong University, Shanghai 2.02.0,{2.) [a] Shanghai Baosteel research institute Shanghai 200431 China [b] School of material Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

The microstructure and mechanical properties evolution of AISI 301LN metastable austenitic stainless steels during cold rolling were investigated. A wide range of cold thickness reduction (10%-80%) was carried out in a four-high rolling mill at ambient temperature. The X-ray and Feritscope MP30 were used to identify the strain-induced α′-martensite phase and its volume fraction, respectively. The microstructure was observed by optical micrograph and the mechanical properties were determined by tensile tests and microhardness. The results show that the strain-induced α′-martensite nucleated at the shear bands intersections and the growth of α′-martensite occurred by the repeated nucleation of new embryos. The volume fraction of strain-induced α′-martensite increased with increasing the cold rolling reduction. In addition, the percentage increased in the tensile strength is the same as that of hardness. The ratio between the average tensile strength and the average microhardness was found to range between 2.82.and 3.17.

关键词： metastable austenitic stainless steel cold rolling reduction strength

research progress in the inner surface modification of metal tubes by plasma processing

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Progress in Natural Science:materials International 2006年第11期16卷 1119-1126页

作者： ZHANG Guling~ 1,2.**, WU Xingfang~1, GU Weichao~2. CHEN Guangliang~2. FENG Wenran~2. NIU Erwu~2. LI Li~2. L Guohua~2. CHEN Huan~2. FAN Songhua~2. LIU Chizi~2.and YANG Size~2.1. School of material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, china 2. Beijing National Laboratory for Condensed Matter Physics, {2. of Physics, Chinese Academy of Sciences, Beijing 100080, china) School of material Science and Engineering University of Science and Technology Beijing Beijing 100083 China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100080 China

The recent progress in inner surface hardening of tubes by plasma processing is summerized. Several techniques of inner surface plasma source ion implantation and deposition are introduced, and their advantages and disadvantages are discussed. The basic principles, technical features and new progress of inner surface plasma source ion implantation methods for metal tubes, which were developed in our laboratory, are described in detail. And perspectives of the future technical development for inner surface ion implantation of tubes are presented.

关键词： PSII metal tubes inner surface surface modification.

Effects of annealing on structural, optical and electrical properties of Al-doped ZnO thin films

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Science china(Physics,Mechanics & Astronomy) 2004年第5期47卷 588-596页

作者： CHEN Yanwei1,2. YU Wenhua1 & LIU Yichun1,2.1. Centre for Advanced Optoelectronic Functional material research, Northeast Normal University, Changchun 13002.,{2. 2. Key Laboratory of Excited State Processes, Changchun institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 13002.,{2. 1. Centre for Advanced Optoelectronic Functional material research Northeast Normal University 130024 Changchun China 2. Key Laboratory of Excited State Processes Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences 130021 Changchun China

In this paper, the structural, electrical and optical properties of Al-doped zinc oxide (ZnO: Al) thin films onto quartz substrates prepared by electron beam evaporation technique were studied. All samples are polycrystal with a hexagonal structure andc-axis preferred orientation. The intense UV emissions and weak deep-level green emissions were observed. The films show high transparency, conductivity and high carrier concentration. Van der Pauw measurements show that the films are n-type degenerate semiconductor. The lowest resistivity is 6.7×10?4 Ω⊙cm at room temperature. These films exhibit a carrier density above 102. cm?3. The conduction mechanism was discussed. The behavior of metallic conduction can be observed in the high temperature range.

关键词： ZnO: Al thin film, photoluminescence, electrical properties, structural properties, Van der Pauw measurement.

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

Development and Application of High Performance X80 Line Pipe for the 2.(nd) West-East Gas Pipeline

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Journal of Iron and Steel research International 2011年第S1期18卷 39-48页

作者： LI He-lin 1 , HUO Chun-yong 1 , JI Ling-kang 1, 2., LI Yang 1, 3 (1. CNPC Tubular Goods research institute, Xi’an 710065,{2. 2. . School of material Science and Engineering, Xi’an Jiaotong University, Xi’an 710049,{2. 3. School of material Science and Engineering, University of Science and Technology Beijing, Beijing 100083,{2.) CNPC Tubular Goods Res Inst Xian 710065 Peoples R China Xi An Jiao Tong Univ Sch Mat Sci & Engn Xian 710049 Peoples R China Univ Sci & Technol Beijing Sch Mat Sci & Engn Beijing 100083 Peoples R China

It is the development tendency of gas pipeline to improve strength of line pipe and transmission pressure, which is an important symbol of the progress of gas pipeline technology. The 2.d West-East Gas Pipeline (the 2.nd WEGP) is the largest-scale X80 high pressure gas pipeline project in the world. Through the joint development project by Pipeline Company, research institute, and steel company, a series of achievements of technology have been obtained, which makes it possible to apply pressure of 12.MPa and X80 LSAW and HSAW pipe for the 2.nd WEGP. Specifications of X80 steel and pipe have been issued based on API 5L. High performance X80 steel and pipe have been developed and meets the Specification. General design conception of applying HSAW pipe and LSAW pipe on gas transmission trunk line with large diameter and high pressure has been established. Failure control of the 2.nd WEGP has been carried out to avoid failure and reduce the lost which based on analysis of pipeline failure mode. In this paper, research and development of high performance X80 welded pipe, establishment of technical route of joint application of HSAW and LSAW steel pipe and key technology of failure control are emphatically discussed.

关键词： 2.nd WEGP acicular ferrite failure control arrest toughness strain-based design

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

Elastic Modulus of 304 Stainless Steel Coating by Cold Gas Dynamic Spraying

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Journal of Iron and Steel research International 2012年第3期19卷 73-78页

作者： HAN Wei1, MENG Xian-ming1, ZHANG Jun-bao2. ZHAO Jie1 (1. School of material Science and Engineering, Dalian University of Technology, Dalian 116085, Liaoning, china 2. Baoshan Iron and Steel Company Limited, Baosteel {2. institute, Shanghai 2.1900, china) [a] School of material Science and Engineering Dalian University of Technology Dalian 116085 Liaoning China [b] Baoshan Iron and Steel Company Limited Baosteel Research Institute Shanghai 201900 China

304 stainless steel coating was deposited on the IF steel substrate by cold gas dynamic spraying （CGDS）, and the elastic modulus of the 304 stainless steel coating was studied. The elastic modulus of cold sprayed 304 stain- less steel coating was measured using the three-point bend testing and the compound beam theory, and the other me- chanic parameters （such as the equivalent flexural rigidity and the moment of inertia of area） of the coatings were also calculated using this compound beam theory. It is found that the calculated results using the above methods are accu- rate and reliable. The elastic modulus value of the cold sprayed 304 stainless steel coating is 1. 179 X 105 MPa, and it is slightly lower than the 304 stainless steel plate （about 2.X 105 MPa）. It indicates that the elastic modulus of the cold sprayed coatings was quite different from the comparable bulk materials. The main reason is that the pores and other defects are existed in the coatings, and the elastic modulus of the coatings also depends on varies parameters such as the feed stock particle size, porosity, and processing parameters.

关键词： cold gas dynamic spraying 304 stainless steel coating three-point bend testing compound beam theory elastic modulus