The role of grain boundaries in creep and creep rupture of metals isreviewed,and the traditional idea of equicohesive temperature is analyzedand discussed.The experimental results we obtained on the change of grain-boundaryinternal friction and elastic mo

The structures of crystalline and non-crystalline TiCu alloys and theirhydrides were investigated with EXAFS method.The radial distance R,coordination number N,and Debye-Waller factor σ~2 of atomic shells surroun-ding Cu atoms were calculated from the dat

Thermal decomposition of gaseous hydrocarbon at high teperature is oneof the most covenient method to produce pyrolytical carbon.The method hasthe merit of simplicity and flexibility.The structure and property of pyrocar-bon obtained can be tailored.In pr

The effects of film morphology of poly(xylyl viologen dichloride)-poly(styrensulfonate)complex modified electrodes on the electrochemical behaviorhave been studied.The results show that the different film layer structureof complex has the obvious differen

By using methyl methacrylate(MMA)and potassium persulfate(KPS)asa seed monomer and an initiator respectively,emulsion polymerization ofethyl acrylate(EA)was carried out in the presence of vinyltriethyloxysilane(VTES)in the article.The poly(methyl methaery

Copolymers of IBA-St were synthesized.Reactivity ratio of the copoly-merization,optical and mechanical properties of these copolymers weremeasured.1.Reactivity ratio:When M_1 is IBA and M_2 is styrene,r_1 =0.35±0.05, r_2=0.54±0.02.2.Optical properties of

With the application of the addition reaction C=C bonds in NES mole-cules which have impregnated and been adsorbed on glass surfaces are satu-rated,and this can be conformed with ESCA.By means of X-ray fluoresce-nce spectra the content of NES and the thic

The chemical parametric diagrams for binary phosphate systems are pre-sented by summing up known phase diagrams and predicting unknown phasediagrams.The proposed diagrams,with ionic field strength and electronega-tivity as parameters,give a quantitative s