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特种铸造及有色合金 2002年第2期22卷 47-49页

作者：金建新洛阳船舶材料研究所

针对铝合金水冷板在铸造过程中出现的薄壁铜管变形、熔化等问题 ,展开分析研究 ,采取铜管两端定位、清洁铜管外壁、控制浇注温度、利用铸件内铜管通水冷却等有效措施 ,既保证了铜管与基体材料的无间隙复合 ,又保证了铜管的完整性。

关键词：铸造工艺铝合金铸造铝铜复合结构水冷板计算机

Effect of the Side Chain Structure on Hydrolysis Degradation of Zinc Acrylate Copolymers

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腐蚀与防护 2012年第S2期 44-48页

作者： XIE Zhi-peng,LIU Chao,WANG Jing-jing,YE Zhang-ji(Xiamen Branch of luoyang ship {2. institute,Xiamen 361101,china)

In this report,zinc acrylate copolymers were synthesized by used different organic acid as the side chain *** copolymers were further characterized by GPC,DSC and Water absorption analysis respectively,and then the effects of the chain structure of organic acid on hydrolysis degradation and copper release rate were also *** the meantime,the result shows that the biocide release rate could be controlled by used different chain structure of organic acid.

关键词： self-polishing organic acid zinc acrylate copolymers antifouling

CRACK GROWTH,FRACTURE FEATURE AND RUPTURE LIFE DURING CYCLIC CREEP OF SUPERALLOY GH2.32

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Acta Metallurgica Sinica(English Letters) 1999年第1期12卷 92-96页

作者： M.F. Geng1), T. Wang1) and X.A. Zhang2. 1) Department of Special Metal materials and Products, luoyang {2. material research institute, luoyang 471.39, china2. Mechanical Properties Laboratory, Beijing institute of Aeronautical materials, Beijing

The effects of cyclic loading on crack growth, fracture feature and rupture life of superalloy GH2.32.have been studied in the present paper. The crack growth tests were carried out at 550 on compact tension specimens under a wide range of load levels and various periods of hold time, and the fracture surfaces were examined on a scanning electron microscope. The results show that, for both static and cyclic creep, Stage-I of crack growth is related with initial test stress, during which the crack extension is about 0.5mm, and that the final effect of cyclic loading on rupture life depends on the counteraction of its two reversed effects on crack growth rate before and after the point n=0.2.

关键词： cyclic creep crack growth fracture feature rupture life initial test stress tensile yield stress

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.

SURFACE STATE AND CATALYTIC ACTIVITY OF ACTIVATED AMORPHOUS Fe_(80)Zr_(12.B_8 ALLOY

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Acta Metallurgica Sinica(English Letters) 1993年第7期6卷 57-63页

作者： WANG Xike SHEN Ningfu CHEN Haisong Zhengzhou institute of Technology,Zhengzhou,chinaZHANG Haifeng {2. research institute for ship materials,{2.,chinaGU Haicheng Xi’an Jiaotong University,Xi’an,china Professor,research Centre for materials,Zhengzhou institute of Technology,Zhengzhou 450002.china

The depth profile of composition,chemical state of elements and morphology of as- received and activated amorphous Fe_(80)Zr_(12.B_8 alloy ribbons have been studied by means of Auger electron spectroscopy,X-ray photoelectron spectroscopy and scanning Auger microprobe combined with Ar ion *** dull and free sides of the as- received ribbons were covered with an iron oxide *** a pronounced surface segregation and oxidation of B and precipitation of microcrystalline α-Fe particles were observed on both sides of activated ribbons,B and Zr were oxidized selectively in subsurface *** both sides of ribbons,a porous surface structure formed. The BET surface area was measured to be increasing from 0.11 to 2.68 m^2.*** principal mechanism of in situ activation has been discussed.

关键词： amorphous Fe_(80)Zr_(12.B8 alloy surface state catalytic activity in situactivation

Facile Synthesis of SnO_2.Hollow Microspheres and Their Optical Property

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Journal of Wuhan University of Technology(materials Science) 2011年第2期26卷 302-305页

作者：贾铁昆 Department of materials Science and Engineering Luoyang Institute of Science and Technology

SnO2.hollow microspheres were fabricated via a hydrothermal synthesis method assisting by the complex surfactant system of polyacrylamide and polyethylene *** by field emission scanning electron microscopy （FESEM） showed the SnO2.hollow spheres were composed of *** growth mechanism for the formation of hollow spheres was *** spectroscopy and photoluminescence （PL） were used to investigate the optical properties of the *** PL result showed that four peaks,containing the emission from recombination of free excitons,were observed in the photoluminescence spectrum.

关键词： SnO2 hollow spheres optical property

research in the Degradation and Antifouling Performance of Copolyesters of L-Lactide and ε-Caprolactonen

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腐蚀与防护 2012年第S2期 49-54页

作者： WANG Jing-jing,LIU Chao,HUANG Cong-shu,JIANG Xue-zhi,XIE Zhi-peng,YE Zhang-ji(Xiamen Branch of luoyang ship {2. institute,Xiamen 361101,china)

Block copolyesters of L-lactide and ε-caprolactone were synthesized by melt copolymerization of ε-caprolactone and *** degradation performance of copolyesters was investigated by quartz crystal microbalance with dissipation(QCM-D).Diisocyanate terminated copolyesters could obtain via the reaction of copolyesters and *** terminated copolyesters could react with polyol resin to prepare degradable polyurethane which can be used in antifouling *** this paper,we also discussed the degradation products release action and antifouling performance of the copolyesters film.

关键词： L-Lactide ε-Caprolactone copolyesters degradation

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

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海水泵阀用新型铸造铜合金的研制

特种铸造及有色合金 2005年第1期25卷 62-64页

作者：郭泽亮汤文新张化龙徐健洛阳船舶材料研究所

研制了一种海水泵阀用新型铸造铜合金 ,该合金综合力学性能优良 :σb≥ 5 5 0MPa ,σ0 .2.≥ 2.80MPa ,δ5≥ 18% ;耐海水腐蚀性能优异 ,在 7m/s的天然海水冲刷下 ,腐蚀率低于 0 .0 42.m/a ,在 3 .5m/s的含砂海水冲刷下 ,腐蚀率为0 .14 ... 详细信息

研制了一种海水泵阀用新型铸造铜合金 ,该合金综合力学性能优良 :σb≥ 5 5 0MPa ,σ0 .2.≥ 2.80MPa ,δ5≥ 18% ;耐海水腐蚀性能优异 ,在 7m/s的天然海水冲刷下 ,腐蚀率低于 0 .0 42.m/a ,在 3 .5m/s的含砂海水冲刷下 ,腐蚀率为0 .14 4mm/a ;与目前推广使用的海水管系材料B10的腐蚀电位相差较小 ,电偶腐蚀率为 0 .0 0 92.m/a ,能有效抑制海水管系的电流腐蚀 ,提高海水泵阀的使用寿命。与国内海水泵阀常用的铜合金相比 ,该合金具有较高的拉伸强度和屈强比 ,能承受较高的压力 ,在深海工程等领域也有广泛的应用前景。

关键词：铜合金镍铝青铜海水腐蚀海水泵海水阀

M-ary CDMA multiuser underwater acoustic communication and its experimental results

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Science china(Information Sciences) 2011年第8期54卷 1747-1755页

作者： HE ChengBing 1,HUANG JianGuo 1,YAN ZhengHua 2.& ZHANG QunFei 1 1 College of Marine Engineering,Northwestern Polytechnical University,Xi’an 710072.china 2.1} {2. research and Development Academy,Beijing 100085,china 1. College of Marine Engineering Northwestern Polytechnical University Xi’an 710072 China2. China Ship Research and Development Academy Beijing 100085 China

A novel M-ary code division multiple access (M-ary CDMA) underwater acoustic communication (UAC) that utilizes quasi-orthogonal sequences has been proposed for the multiple mobile unmanned underwater vehicle (UUV).Its performance has been verified in both four-user synchronous and three-user asynchronous scenarios through a lake experiment over a very shallow-water *** a chip rate of 2.kilochips per second,good bandwidth efficiency and robust links have been achieved both at 5 and 15 km *** performance of M-ary CDMA in mobile condition (3 m/s) is demonstrated by using the recorded lake experimental data. Experimental results show that the proposed scheme is suitable for multi-user communication platform in long-range shallow-water channel with simple receiver algorithms.

关键词： underwater acoustic communications M-ary code division multiple access (M-ary CDMA) Doppler shift compensation shallow-water acoustic network unmanned underwater vehicle