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Solid-state electrolyte LiI（CH3OH）4-I2 for Dye-sensitized solar cells

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Solid-state electrolyte LiI（CH3OH）4-I2 for Dye-sensitized ...

BEHAVIOR OF SHORT FATIGUE CRACKS AT BLUNT NOTCHES IN A MEDIUM CARBON STEEL

2004全国太阳能光化学与光催化学术会议

作者： B.F. xue, H.x. wang, H. Li, z.x. wang, Q.B. Meng. x.J. Huang, L.Q.Chen, O. Sato and A. Fujishima (Beijing National Laboratory for Condensed Matter Physics Institute of Physics, Chinese Academy of Sciences, Beijing, 100080, P.R. China Kanagawa Academy of Science and Technology, Kawasaki 213-0012, Japan ,qbmeng@aphy. ***)

＜正＞ In this paper,LiI（CH3OH）4,a solid-state electrolyte,is used to form a redox couple with iodine andwas applied to ***2 nano-particles Was used as crystal growth controller and an ionic liquid（1-methyl-3-ethylimidazolium iodide,MEII）as“spacer’’between the crystallites.A high energy conversionefficiency of 4.5%is achieved by using this composite electrolyte in DSSCs.

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来源： cnki会议评论

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Acta Metallurgica Sinica(English Letters) 1997年第5期10卷 430-436页

作者： Wu, z.x. Sun, x.F. Southwest Jiaotong Univ Chengdu China

The behavior of part-through and through short cracks in single edge blunt notched specimens of a medium carbon steel was investigated by a replication method. It is found that the fatigue failure of these notched specimens is caused mainly by the growth of short surface cracks originating from the surface of notch root. More than 70% of the fatigue life is spent in the regimes in which short surface cracks initiate and propagate as part-through cracks before joining up to form a single through-thickness crack. The effect of original crack profile which is formed through the coalescence of multiple part-through cracks is the main reason causing the 'anomalous' propagation behavior of the through-thickness crack in its early stage.

关键词： Carbon steel Crack initiation Crack propagation Fatigue of materials Fracture mechanics Surfaces

EFFECTS OF zIRCONIUM ON MICROSTRUCTURES AND MECHANICAL PROPERTIES OF MICROALLOYED STEELS

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Acta Metallurgica Sinica(English Letters) 2006年第5期19卷 319-327页

作者： T．H．xi x. Chen P.H. Li z.x. Yuan Technology Center of Wuhan Iron ＆ Steel （Group） Corp. Wuhan 430080 China School of Materials and Metallurgy Wuhan University of Science and TechnologyWuhan 430081 China

The effects of zr on the microstructures and mechanical properties of microalloyed steels have been investigated by mechanical tests and microstructural observations. The microstructures in the zr-doped steels are ferrite plus pearlite, which is similar to those in the zr-free steel. With the increase in the zr content, the lamellar structure reduces and even disappears. Sulfides and silicates that exist in the zr-free steel are modified into fine oxides in the zr-bearing steel. When the zr contents range from 0.01wt% to 0.03wt%, the low temperature toughness of the steel can be substantially improved while its room-temperature strength and ductility have no apparent change. The refinement of ferrite grain size by the addition of zirconium is one of the main reasons for this toughness improvement.

关键词： zirconium microalloyed steel microstructure mechanical property

Coercivity Enhancement of Nd-Fe-B Thin Film Magnets through Dy Surface Diffusion Process

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Journal of Materials Science & Technology 2011年第9期27卷 826-830页

作者： C.Y. You J. zhu N. Tian z.x. Lu State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China School of Materials Science and Engineering Xi＇an University of Technology Xi＇an 710048 China

The Dy capping layer was deposited at different temperatures on the Nd-Fe-B thin films to investigate the mechanism of the coercivity enhancement through the Dy surface diffusion. The highest coercivity of 2005 kA/m （25.2 kOe） was obtained at the Dy deposition temperature of 460℃, which was significantly higher than the value of 1297 kA/m （16.3 kOe） without Dy capping layer. By performing the transmission electron microscopy （TEM） analysis, it was found that some of the grain boundaries were enriched with Nd element, which could be partly ascribed to the promotion by the Dy surface diffusion. In comparison to the evolution of the spin reorientation temperature of Nd2Fe14B phase after the deposition of the Dy capping layer, it is concluded that structural modification plays a significant role in the coercivity enhancement due to the Dy surface diffusion.

关键词： Nd-Fe-B thin film Coercivity enhancement Dy layer Microstructure

SHORT FATIGUE CRACK PARAMETER BASED ON THE TOTAL CRACK AREA

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Acta Metallurgica Sinica(English Letters) 2001年第4期14卷 235-240页

作者： z.x. Wu and x. C. Wu Engineering College, Yangzhou University, Yangzhou 225009, China Eng. Coll. Yangzhou Univ. Yangzhou 225009 China

The progressive fatigue damage of a material is closely related to the whole population of cracks on its surface. In order to understand which parameter is a more useful indicator of fatigue damage, rotatory bending fatigue tests were carried out using smooth specimens of medium-carbon steel. The behavior of short crack propagation during fatigue was examined and a new parameter total crack area was suggested. The aim of this paper is to extend the research on fatigue damage in the already studied steel and to study how these damage parameters are correlated with the process of fatigue damage in order to evaluate the effectiveness of damage detection methods.

关键词： Bending strength Crack initiation Crack propagation Fatigue testing Parameter estimation

ALGEBRAIC-GEOMETRY FOUNDATION FOR CONSTRUCTING SMOOTH INTERPOLANTS ON CURVED SIDES ELEMENT

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Journal of Computational Mathematics 1995年第4期13卷 343-350页

作者： z.x. Luo(Institute of Mathematical Sciences, Dalian University of Technology, Dalian, China) 大连理工大学数学系辽宁大连

The aim of this paper is to lay a algebraic geometry foundation for constructing smoothing interpolants on curved side element. Some interpolation theorems in polynomial space are given. The main results effectively f... 详细信息

关键词： CAGD wang Rational ALGEBRAIC-GEOMETRY FOUNDATION FOR CONSTRUCTING SMOOTH INTERPOLANTS ON CURVED SIDES ELEMENT

SPUTTERING BEHAVIOUR OF IRON SILICIDES UNDER LOWENERGY Ar^+ ION BOMBARDMENT

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Acta Metallurgica Sinica(English Letters) 1999年第6期12卷 0-0,0-0+0-0页

作者： z.x. Cao E.G. wang and Yx. Ne(State Key Laboratory for Surface Physics, Institute of Physics, Beijing 100080, China)

Surface compositions of Fe3Si, FeSi and FeSi2 under 0.1 to 5ke V Ar+ bombaniment have been investigated by using AES method, and the results indicate that the sudece compositions depend strongly on ion enerpy and sample bulk compositions. While in FeSi and FeSi2 only Fe enrichment in the selvage has been observed, in Fe3Si it is Si enriched when the ion enerpy is higher than 31OeV Competition between preferential sputtering and radiation enhanced segmpation is quoted to eoplain this phenomenon.

关键词： preferential sputtering iron silicides radiation enhanced segregation

LOW CYCLE FATIGUE AND CREEP-FATIGUE BEHAVIOR OF A HIGH TEMPERATURE ALLOY ON SMOOTH AND NOTCHED SPECIMENS

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Acta Metallurgica Sinica(English Letters) 1999年第1期12卷 40-45页

作者： Shi, H.J. Liu, S.L. He, Y.H. Duan, z.x. Tsinghua Univ Beijing China

A series of low cycle fatigue and creepfatigue tests on smooth specimens and notched specimens were performed with a high temperature alloy used in the manufacture of aeroengine turbine discs. The cyclic stressstrain behavior and fracture characteristics of the notched specimens were emphatically investigated. A comparison of fatigue behavior between smooth and notched specimens was done and lifetime of notched specimens was evaluated. At the same temperature, the fatiguecreep lives of the smooth specimens are far greater than that of the notched specimens.

关键词： low cycle fatigue creepfatigue stress concentration notch effect

RHEOLOGY FEATURE OF SIMPLE METAL MELT

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Acta Metallurgica Sinica(English Letters) 2007年第3期20卷 181-186页

作者： C.J. Sun H.R. Geng Y.S. Shen x.Y. Teng z.x. Yang Key Laboratory of Liquid Structure and Heredity of Materials Ministry of Education Shandong University Jinan 250061 China School of Material Science and Engineering Jinan University Jinan 250022 China

The rheology feature of Sb, Bi melt and alloys was studied using coaxial cylinder high-temperature viscometer. The results showed that the curve of torsion-rotational speed for Sb melt presents a linear relation in all measured temperature ranges, whereas for the Bi melt, the curve presents obvious non-Newtonian feature within the low temperature range and at relative high shear stress. The rheology feature of Sb80Bi20 and Sb20Bi80 alloy melts was well correlated with that of Sb and Bi, respectively. It is considered that the rheology behavior of Sb melt plays a crucial role in Sb80Bi20 alloy and that of Bi melt plays a crucial role in Sb20Bi80 alloy.

关键词： Newtonian liquid rheology melt Bi Sb