The nonequilibrium solidification process of alloy № 1 with RE_2M_(17)+REM_5phases in Sm-La-Co-Cu-Fe-Zr system during directional solidification with liquid metalcooling(LMC)is L→RE_2M_(17),L+RE_2M_(17)→REM_5(?) L→RE_(5-x)+REM_(5+x).And theperitectic reac

The Ni/Ti multilayers were produced through repeated cold rolling of coated Ni/Ti pow-der.The solid state amorphization reactions induced by a constant-heating-rate annealing in themultilayers were studied by means of XRD,SEM,TEM,DSC and magnetic analysis

The probability wave theory of atomic configuration was applied to the study ofthe atomic configuration of the stablest superlattices formed in (A~Ⅲ B~Ⅴ)_(1-x)C_(2x)~Ⅳ semiconductoralloy system.The nineteen basic ordered structures were deduced theoretica

Laser scribing of 3wt-% Si-Fe and its changing regularity of domain structureunder laser treatment were discussed.It is indicated by experiment that hysteresis loss of thestalloy decreases by 10% at least even up 20%.

The composition depth profile and chemical characteristics of both the free anddull sides of amorphous Ni_(63)Zr_(37) and Ni_(63)Zr_(32)La_5 alloy ribbons were studied by means of Aug-er electron spectroscopy and X-ray photoelectron spectroscopy combined

A lot of twins in laser melted-solidified region of aluminium alloy containingRE was investigated by means of TEM.Main reason for twin formation is that solubility of RECe in Al is increased by laser rapid melt-solidification.The twin crystal face was mea

The intrinsic stacking fault energy of three Fe-Mn-Si alloys was calculated ac-cording to the thermodynamic model of stacking fault energy.The calculated results show thatthe stacking fault energy of Fe-Mn-Si alloys lowers with increasing Si content.The i

Thermoelectric polycrystal ceramic materials were prepared by a new ceramictechnology.The specimens were sintered by solid reaction in a sealed evacuated quartz tube.The new ceramic cooling materials have a inhomogeneous structure, but higher mechanicalst

Ni-Al alloy was prepared by rapid quenching.The microstructure and catalyticproperties of rapidly quenched Ni-Al alloy and primary Ni-Al alloy were studied.The resultshows that rapidly quenched Ni-Al alloy has fine and homogeneous structure and containsmo

The microstructure of a radial-type of mesophase pitch-based graphite fiberswas studied by transmission electron microscopy and X-ray diffraction.The results indicatethat the mesophase pitch-based graphite fibers consist of graphite and turbostratic phase

Zirconia thin films were deposited by r.f.magnetron reactive sputtering methodwith the pure metal Zr,compound Y-ZrO_2 and Mg-ZrO_2 targets.The phase structures of thethree series films were investigated,and the effect of annealing and stressing were studi

Anatase structure TiO_2 powders of various crystal size were prepared bySol-Gel method.Single phase anatase structure was obtained for the material with the particlesize less than 70nm.Lattice parameter and Debye Temperature were measured by X-raydiffract

Donor doping was used to make the grains semiconductive for a TiO_2 ceramic.The resistivity of the grains was measured by means of strong current pulse method and highfrequency equivalent circuit method.The results show that Nb_2O_5 doping can considerabl

Nanocrystalline material SnO_2 was prepared by hydrothermal method and hasbeen proved to be stable in room temperature atmosphere.X-ray diffraction,transmission elec-tron microscopy,high resolution electron microscopy and M(?)ssbauer spectroscopy were use

The dependences of tensile strength on the primary structure of polymers and onthe coditions of processing and testing for self-reinforced polymers were studied by the methodof uniaxial extension.A great number of experimental results were used to verify

The ramie fiber,which is planted in both southern and northern china,was chosen as rein-forcement of composite material.The comparison of its chemical composition with those of wood andbamboo reveals that the cellulose content in ramie fiber is the highes

In this study two kinds of aluminum surface treatment techniques(phosphoricacid anodizing and alkaline cleaning)and water-boiled maturing method have been used in thepreparation of glass aluminum laminates,GLALL,to obtain different interface strength.The

CVD C-Si gradient coating on the surface of carbon fiber(CF)and its influ-ence on the properties of CF were investigated.Experimental results show that the structure ofcarbon and silicon elementes are noncrystalline in C-Si gradient coating and the gradie

Interfacial Monitoring System(IMS)established in this paper was used to inves-tigate the relation between the interfacial shear strength and mechanical properties of fiber rein-forced composites.The interfacial shear strength from IMS can be accepted to b