Based on our previous works,four ternary alloy systems,Ti-Al-Ge,Ti-Al-In,Ti-Al-Hf and Ti-Al-Ta,were selected to investigate the electron concentrationrule for the formation of Ti_3X-phase.Results show that the formation of Ti_3X-phase in theTi-Al solid so

The existance form of RE element Nd and its effect on the precipitation ofTi_3X phase in Ti-Al-Nd alloy were investigated by TEM and X-ray diffraction techniques.The results show that the existance form of RE element Nd in Ti alloy is mainlyNd_2O_3 partic

The stresses forcing on the sphere-like intrusions during the isothermaloxidation and cooling have been analyzed.These intrusions mainly composed of Nd_2O_3 andTiO_2 form when Nd doped 5621S alloy is oxidized.The calculation indicates that most of thegrow

Recrystallization-induced plasticity(RIP)in LF6 aluminium alloy under pre-vious elastic stress was studied in this paper.The analysis of elongation(δ)-temperature(T)curves and TEM observation of feature points of RIP test showed that the macro-plastic flo

The superconducting whiskers which were long enough for the measurements ofmany physical properties have been prepared by heating an amorphous plate in a steady streamof oxygen atmosphere.The morphologies of the whiskers were observed by SEM;their crystal

In present paper the effects of overload on the fatigue crack initiation life ofmeta-bainite and martensite in steel 40CrMnSiMoV have been investigated.The results showthat compressive overload decreases the fatigue crack initiation life(N_i),while tensil

According to the characteristics that the two principal stresses in plane at thepole of a bulging speciman in a die with circular cavity are playing equally important role inleading the deforming of material here,a method predicting the quantitative diffe

The microstructure and deformation mechanisms of 8090 aluminum-lithium al-loy in superplastic deformation were investigated in this paper.TEM observations show that for8090 alloy under the optimum conditions of superplastic deformation(T=500℃,ε_i=3.33×10~

Both investigation on boron distribution and observations of antiphase bounda-ry in boron-doped Fe_3(SiAl)by means of α-particle autoradiograph and transmission electronmicroscope respectively were carried out,which revealed the existance of a critical co

In the present paper,the properties of a new kind ofelectrode-Ti/SnO_2+MnO_x+RuO_2/MnO_x DSA are reported,including the electrode′s electri-cal conduction,roughness factor,electrochemically active surface area and anodic characteris-tics for oxygen evolut

This paper presented the experimental results of synthesized diamond film in atmosphere by thecombustion flame of oxyacetylene.The influence of substrate temperature on diamond growth rate and crystalhabit was studied.The temperature range of epitaxial si

In this paper,diamond film had been synthesized on Si_3N_4+SiC composite ce-ramics and sialon ceramics by HFCVD(hot filament chemical vapor deposition).The obtaindfilms were analysized by X-ray diffraction,Raman spectrometer,scanning electron microscopy,p

The thin film TiN that has been deposited on the insulation alundum by DCplasma chemical deposition(DC-PCVD)instrument has a strong adhesion to the substrate.The forming mechanism of thin film TiN and effect factor of the film quality have been dis-cussed

C-V characteristics of polyimide Langmuir-Blodegett films is described in thispaper.The obtained results are similar to other insulator films.This is basic of polyimide LBfilms application in field effect transistor(MLSFET).

A series of poly(ethylene terephthalate)(PET)films with different degree ofplannar orientation[Δ(xy)z],crystallinity(X_c)and molecular weight(Mn)are obtained bybiaxial stretching,annealing at 110℃ and a larger dose γ-irradiation respectively.The behavioro

A novel water-selectivity composite membrane for pervaporation ofwater-ethanol mixtures was developed by depositing plasmapolypyrolidine on Nickle plate.Itshows good separation ability:6.8[α],1840 g/m~2h[J],and long service life.Used in continu-ous pervap

Dynamic mechanical properties of the poly(ethylene glycol)polyurethaneurea(PEUU)and the polymer complexes formed by PEUU and LiClO_4 were studied.The influenceof adding LiClO_4 to PEUU on the mechanical relaxation and the activation energy were dis-cussed

This paper described a newly-developed,automated instrument for measuringthe interfacial bond strength of specimens cut from actual manufactured articales.In the test,acompressive load was applied to individual fibers oriented normal to a polished surface

Fabrication technique of SiC whiskers reinforced Zn-12Al alloy matrix materi-als was studied.The process consists of the fabrication of the whiskers′preform and the fabrica-tion of the composite billet by liquid infiltration.In this way the composites wit