Authors report a comprehensive investigation of structure, magnetization and transport properties of as-quenched and annealed Coxcul-x(0≤x≤0.22) granular alloys prepared by melt-spinning. Using X-ray diffraction, DCS measurements, and magnetic characteriz

The 'deposition-diffusion' method has now been used as an important approach to the preperation of some spotal materials. In this paper, its industrial applicabitity in the production of Fe-65 mg·g-1 Si alloy thin ribbons under various heat treatment cond

The microstructure and bend ductility at room temperature of the (Ni, Fe)Al intermetallic compound were investigated by single roller rapid solidification technology. The results show that under rapid solidification Al-45Ni-5Fe formed equiaxed grains with

The Mossbauer spectra were measured for amorphous Fe76. 5-x. Cu1 Nb.Si13. 5 B9 (x=0.0、1. 0、3.0、 5.2、7.2) alloys both at as-cast and annealed state, in order to investigate the influence of Nb on the formation of nanocrystalline alloy. The results indicate

A simulated occluded corrosion cell was used to study the susceptibilities to crevice corrosion o f irradiated and unirradiated zircaloy-4 in NaCl solution.It was found that in the occluded cell pH value drops and the concentration of Cl-increases as anod

In this paper, Warren-Langer's growth model of dendritic arrays has been modified in taking aCCount of Gibbs-Thomson effect and mathematical treatment. The modified warren-Langer's model (MWL) was examined at high growth rates, and was applied to a constr

The Hf-containing alloy was selected as a interlayer for brazing and Transient-Liquid-Phase(TLP) bonding of single crystal superalloy, in which element Hf should diffuse as quickly as possible from bond to matrix phase. The objective of this investigation

The solidification experiments of eutectic Ph-Sn were accomplished at the 1g, 5g, 10g and 15g gravity levels in a centrifuge with 1. 3m radius. For observing and analyzing the effects of buroyancy convection on the microstructure and morphology of eutecti

A rapidly solidified high carbon iron-base alloy was rapidly heat treated by pulsed Nd: YAG laser irradiation. The rapidly solidified eutectic cementite (Fe3C) was rapidly graphitized during the laser scanning.As a result, a novel iron-base alloy containi

The effect of EB scanning frequency and welding speed on the refinement degree of Al-Mg alloy welded metal and the relationship between the refinement degree and the hardness of welded metal have been investigated respectively by the length of main axid i

By using high density electric current pulses treated low carbon steel, the possibility to improve fatigue property of material was investigated. The results show that the fatigue property of the low carbon steel treated by high density electric current p

Three dimensional diffusion at fibrous eutectic growth front has been analyzed in considering the solute distribution anistropy formed by space geometry character. It is shown that the Jackson and Hunt's analysis is a simplified result of the present mode

In this paper, high-temperature pyroelectric currents of ZnO-Bi2O3 and ZnO-Pr2O3 based varistor ceramics were found from about 400℃ for the first time, which is the direct evidence for charge or defect migration in these ceramics at high temperature. The

SnO_2-MnO film were fabricated by electrostatic spray pyrolysis(ESP). The change in resistance of these film upon exposed to H2 gas in air have been measured. The results shown that the film has higher resistance in air and higher sensitivity to H2 gas. T

High purity nano-powder NiMn2O4 was prepared by sol-gel procedure. The synthetic process and structure of nanometer powder NiMn2O4 were studied by thermal analysis, X-ray diffraction,transmission elctron microscopy. The synthetic temperature of NiMn2O4 na

Porous silica gel glass was prepared by sol-gel process from tetraethoxysilane (TEOS). The principal catalytic mechanisms and effects of different types of catalysts such as HCl, HF, HNO3, NH3.H2O on pore size distribution were studied. Ammonia catalyzed

Molybdenum film and Fe16N2 thin film were deposited on Al2O3 (0001) and GaAs (001)substrate respectively by ion-beam assisted deposition (IBAD). The microstructure of the interface between the films and substrates were studied on atomic scale by using the

Hard TiB2 films have been synthesized by ion beam sputtering. Observation by AFM indicated that the surface of the prepared TiB2 films is very smooth. AES, XRD and XPS analysis showed that the B: Ti ratio in the films is 1.8, the formed films are pricipal

MoO3 ceramic film was prepared through a sol-gel process by using ammounium paramolybdate as a starting material and ethylene glycol as a dissolvent. TG-DTA analysis of a xerogel was done. Microstructures and crystal compositions of a gel film and oxide f

The manufacturing method and thermochromatic characteristic of new reversible thermochromatic material Bi-V-Cr oxide compound are presented. The experiment shows that the colour of Bi-V oxide compound BiVO4 can chang among yellow (ambient temperature)-ora

C-60 were prepared in Ar atmosphere instead of He by Kratschmer's carbon arc method.We study that carbon soot yield, electric power and C-60 yield depend on the inert gas (Ar, He) as well as the pressure.

By X-ray diffraction and the on rue-an alyzing-calculus methods, diffraction Peaks for crystallinity and amorphous area in PEEK are corrected, which gives the crystallinity degree formulae of PEEK. Besides, Infrared(IR), Differential Scanning Calorimetry

The experimental results of surface wettability show that bionic composite coating has excellent hydrophobicity, and the contact angle for water on its surface reachs up to 92°which is a lot larger than that of metal materials; The abrasive wear experimen

The actual loading stresses of the matrix in a SiCp / 6061A1 composite caused by applied loads were measured by means of x-ray stress analysis method, and those of the reinforcement in the composite were calculated based on the measured results. The exper

The effect of postcured straining on the fatigue properites of VIRALL laminates has beenexperimentally investigated in the present paper. It is fornd that the fatigue life is prolonged with the increase of prestrain. Through analysing the variations of th