材料期刊网

PHASE DIAGRAM OF Bi-Pb-T1 TERNARY SYSTEM

CHE Guangcan Institute of Physics , Academia Sinica , Beijing , ChinaM.ELLNER Max-Planck Institut for Metallforschung , Stuttgart , Germany Associate Professor , Institute of Physics , Academia Sinica , Beijing 100080 , China

金属学报(英文版)

Isothermal section at 25℃ of phase diagram and phase structure of Bi-Pb-Tl ternary system have been studied by means of room and high temperature X-ray diffraction and quenching.

关键词: ternary system , null , null , null , null

Nobel Prize for Our Advisor, Gerhard Ertl, Germany

催化学报

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An Example of the Scientists—Congratulate Professor SHI Changxu on His Seventyth Birthday

DirectorsBoardofInstituteofMetalResearch , AcademiaSinica

金属学报(英文版)

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Professor XU Zhong-yu and his research activities

新型炭材料

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Preface to Special Issue on Photocatalysis for celebrating the 20th anniversary of Professor Jimmy C. Yu’s return to Hong Kong and leading photocatalytic research there

催化学报 doi:10.1016/S1872-2067(15)61006-3

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SUBSTRUCTURE ALTERATION OF STAINLESS STEEL DURING CONSTANT STRAIN FATIGUE

WANG Jingyi Xi'an Institute of Technology , Xi'an , ChinaTAN Yuxu MA Zenghai Xi'an Jiaotong University , Xi'an , China Institute of Mealic Materials and Strength , Xi'an Jiaotong University , Xi'an 710049 , China

金属学报(英文版)

The alteration of substructure of an austenitic stainless steel has been investigated during con- stant strain fatigue.No plateau stage on the cyclic stress-strain curve was observed for the stainless steel in contrast with a monocrystalline pure copper specimen.This may relate to its low stacking fault energy.During strain fatigue under various amplitudes the substructure of dislocation in austenite alterates correspondingly.It revealed to associate with the appearance change of the cyclic stress-strain curve.

关键词: austenitic strainless steel , null , null

FLOTATION-SPECTROPHOTOMETRIC DETERMINATION OF TRACES OF PHOSPHORUS IN IRON, NICKEL, COBALT, COPPER AND ZINC USING MOLYBDATE AND MALACHITE GREEN

Fresenius Journal of Analytical Chemistry

A sensitive method for the determination of traces of P in Fe, Ni, Co, Cu and Zn is based on the formation of an ion-associate with molybdate and malachite green, whose absorbance is measured at 620 nm. The calibration curve is linear up to 0. 1 0-mu-g/ml; molar absorptivity is 2.7 x 10(5) l mol-1 cm-1. It was found that commonly coexisting elements did not interfere.

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Relationship of Fatigue Crack Propagation to Dislocation Structure and Slip Geometry

Campbell Laird(Dept. of Materials Science & Engineering , University of Pennsylvania , Philadelphia , PA 19104-6272 , USA)Pedro Peralta(Center for Materials Science , Los Alamos National Laboratory , MaU Stop K765 , Los Alamos , NM 87545-0001 , USA)

材料科学技术（英文）

The mechanisms of fatigue crack propagation are breifly reviewed in relation to Professor McClintock's contributions to the early development of the field. The most securely established understanding has been obtained for those mechanisms of propagation involving plasticity-inducedgeometrical changes to the crack tip during tensile and compressive straining (the plastic blunting process). The roles of more complex factors in controlling the kinetics of crack propagation,which cause the magnitude of the Paris exponent to exceed 2, remain to be elucidated. Recentlyobtained results revealing the interconnection between the slip behaviour at the crack tip, theplastic blunting process and the dislocation structures present in the material before the crackencounters them are reported.

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NUMERICAL ANALYSIS OF THREE-DIMENSIONAL FLUID FLOW AND HEAT TRANSFER IN TIG WELD POOL WITH FULL PENETRATION

WU Chuansong , CAO Zhenning , WU Lin Harbin Institute of Technology , Harbin , China

金属学报(英文版)

A model is established to analyze three-dimensional fluid flow and heat transfer in TICweld pools with full penetration.It considers the deformation of the molten pool surfaceat the condition of full penetrated workpieees,takes the are pressure as the drivingforce of the pool surface deformation,and determines the surface configuration of weldpool based on the dynamic balance of arc pressure,pool gravity and surface tension atdeformed weld pool surface. The SIMPLER algorithm is used to calculate the fluid flowfield and temperature distribution in TIG weld pools of stainless steel workpieces.TIGwelding experiments are made to verify the validity of the model.It shows the calculatedresults by the model are in good agreement with experimental measurements. professor,Dept of Welding Engineering,Harbin Institute of Technology,Harbin 150006,China

关键词: KEY WORDS TIG weld pool , null , null , null , null

Controlled synthesis of cobalt flowerlike architectures by a facile hydrothermal route

European Journal of Inorganic Chemistry

Cobalt flowerlike architectures composed of hexagonal nano-platelets have been synthesized by a simple hydrothermal. reduction method. The architectures are fabricated by the reaction Of COCl2 with NaOH at 140-180 degrees C in the presence of sodium dodecyl benzenesulfonate (SDBS), with NaH2PO2 center dot H2O as reducing agent. The diameters of the flowers range from 8 to 10 mu m, and the average thickness of the hexagonal sheets is about 100 nm. Higher reaction temperatures and the proper concentration of sodium hydroxide (NaOH) are key requirements for the fabrication of the flowerlike architectures. A growth mechanism for these architectures is proposed on the basis of the characterization by X-ray diffraction, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The magnetic hysteresis loops at 5 K and 295 K of the cobalt flowerlike architectures show ferromagnetic characteristics with coercivities of 371 Oe and 197 Oe, respectively. Our work may shed light on the designed fabrication of complex 3D architectures of other materials. (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008.

关键词: hydrothermal synthesis;cobalt;nanostructures;magnetic properties;gold nanoparticle arrays;anisotropic growth;self-organization;nanoplatelets;superlattices;nanocrystallites;superstructures;nanostructures;construction;aggregation