TiAl alloys exhibited poor oxidation resistance as a result of the formation of non-protective Al2O3/TiO2 mixed scale. It is necessary to apply the protective coatings before ap plication. This paper reviews oxidation mechanisms of TiAl alloys, and the e

Material science under microgravity conditions is developed to the application-oriented research. In this paper, some examples are introduced in the field of new materials and technologies based on the results of materiaI research under microgravity envi

The complexes of (Eu3+, Tb3+) with 1,10-phenanthroline (Phen) may be decom posed in aqueous solutions, and thus can not be doped in gel glasses prepared by a traditional sol-gel process. Using in-situ synthesis technique, homogeneous silica gel glasses d

Based on the present knowledge of convective flow and solute transport during ACRT-B crystal growth process, a one-dimensional soIute transport modeI of ACRT-B cyStal grwthis presented. AnalyticaI results of axial solute distribution applicable to the ini

Here we have studied the friction and wear of various diamond-based specimens,i.e. single crystal diamond, aggregates with a' binder' phase of cobalt or silicon carbide, and apolycrystalline coating produced by a chemical vapour deposition process, when d

By microwave plasma enhanced chemical vapor deposition we prepared highly (002) oriented AIN nanometer thin film on Si(111) substrate. The effect on sudece morphology. film structure and deposition rate at various deposition conditions had been researched

The kinetics of t→m transformation in 2% (in mol) Y2O 3-ZrO 2 were studied by dilatometry and X-ray diffraction analysis. The Lattice parameters and unit cell volumes of monocnilic phase produced from athermal and isothermal transformation were calculate

The microstructure evolution pattern of undercooled Cu-39%Ni-6%Fe (mass percentage) ternary alloy has been investigated with glass fluxing technique combined with cycling process of superheating and cooling. In the undercooling range (25~304K), the micros

Amorphous Fe90Zr10 alloy ribbons were made in air and Ar atmosphere respectively.The effect of the atmospheres on the surface state of both the free and dull side of the amorphous alloy ribbon was studied by means of AES and XPS combined with in situ Ar i

Nodularization of eutectic in austenite-bainite steel modified by Mg and Al have been investigated by means of TEM,SEM and EPMA.Results show that the nodular eutectic is pseudo-eutectic of austenite and Fe3C, which is formed between austenite dendrites at

A centrifuge with of radius 1.3m is used to achieve four gravity levels (1g, 5g, 10g and 15g, 1g=9.8m.s-2). For observing and analyzing the difference of solidification morphology in various gravity levels, the eutectic Pb-Sn is directionaIly solidified i

In the paper, we have obtained nonlinear absorption coefficient and nonlinear refractive index as a function using transmission spectra for ZnSe thin film. And observed increasing absorption optical bistablity using nanosecond pulsed laser in ZnSe thin fi

XPS and XRD results of CeO2-MgO-ZrO2 system showed that Ce4+ content decreased gradually while Ce3+ content increased when the material was sintered at 1700℃ andheat-treated at 1200℃. The lattice constant of cubic zirconia and binding energy of O ion incr

Nanometer ZnO, ZnO-Fe were prepared by H2+Ar arc plasma method. Compared with coarsegrained ZnO, nanometer ZnO possesses evidently grain-size effect and the operating temperatures shift toward lower temperature (200℃~250℃). The sensitivity increases rapid

Mechanisms and erosion resistance of pressless (PL) sintered SiC, hot-pressed (HP)SiC, hot-isostatic-pressed (HIP) SiC ceramics are discussed in this paper. SEM observations of their microstructure and erosion sudeces are employed to analysis their erosio

In the present paper, ACRT is applied to the Bridgman growth of Cd0.96Zn0.04Te,The effects of ACRT on the Zn segregation in the Cd0.96Zn0.04Te are studied by comparing with standard Bridgman. The distribution of grains and the segregation of Zn in Cd0.96Z

Nano Ti particles with average size of 40nm were dispersed into polycarbosilane (PCS) homogeneouely by ultra-sonic and subsequently SiC ceramic fibers containing Ti, with good mechanic properties and continuous controllable resistivity, were prepared by m

The mixed powders CaHPO4.2H2O-CaCO3 were prepared on the sudece of TC4 that was pretreated by difFerent bonding layer. And the effect of Y2O3 powder on the bioceramic coating was discussed. With this process, the bioceramic coating were successly composed

As diffraction patterns of high Tc superconducting oxides are complex with many overlapping diffraction peaks which are difficult to resolve with a conventional X-ray pole figure goniometer, some advanced methods of texture measurement and analysis are re

Commercial grain oriented silicon steel sheet with a thickness of 0.30mm was cold rolled to 0.10mm by the cross shear rolling (CSR) mill with a mismatch speed ratio 1.2 and by the conventional rolling, respectively The thin strips were annealed at 1050℃,

Rare earth (RE) was added in the steel sudece by Laser Rapid Solidification Processing (LRSP). The experimental data show that oversaturated RE can be dissolved into the steel surface layer by LRSP. RE in the steel surface layer reacts with O and S, disso

In this paper, the electrorheological (ER) suspensions containing polypyrrole particles and silicone oil were prepared. The conductive properties of these suspensions and their influencing factors, Such as field strength, particle concentration, particle

The reasons of red (yellow) CdSxSe1-x glaze with worse high - temperature resistance were investigated with X-ray diffraction. The red (yellow) CdSxSe1-x glaze was obtained with high-temperature resistance and low cost through; (1) adding additives to the

Superplastic tension tests on the 14μm SiC particulate reinforced 2O24Al coposite fabricated by roll technique under temperature conditions from 490℃ to 530℃ and strain-rates ranging from 1.67×10-4 to 1.67×10-3s-1 were carried out. It was indicated that a

In this paper, an in situ surface composite pipe of Al-Ni alloy, with Al3Ni-rich layer accumulated in inner layer, a litter in outer layer and free in middle layer, has been produced by means of unidirectional solidification in a rotating electromagnetic