Six compositions of Ni-Cu-Re alloys were prepared in vacuumare furnace.The solid solution phase of Re(Ni,Cu)was observed in alloy co-ntaining Re>5at.-% besides single phase of Ni(Cu,Re).The dependence offriction coefficient of alloys with temperature was

The microstructure of Co-Cu-Re alloy was investigated byX-ray diffraction and electron microprobe analysis.The solid solutions of Cuand Re were found in alloy containing high content of Cu,Re(more than 10at.-%),apart from two main structure phases of Co(C

The superplasticity of Al-Zn-Mg-Cu alloy was developed bya simplified thermomechanical process.The tensile deformation behavior wasstudied at different temperatures.It was found that the optimal superplastie de-formation condition is temperature equal to

The relationship between reflectance(R)and wavelength(λ)isone of the base data for calculating chromaticity of alloys.The reflectance ofbinary copper alloys and effect of alloying elements Al,Zn,Mn,Si,Ni,RE,aging time and etching on the reflectance has be

The effect of aging treatment on the structure and mechanicalproperties of Al-8.23Fe-3.62Ce alloy was studied by hardenss,ambient tem-perature tensilc test and transmission electron microscopy.It was found that ag-ing for 6h at 573K did not result in mark

The effects of Zr and V on microstructure and magneticproperties of machinable REPM were studied.Experimental results show thatcoexistance of Zr and V in Sm(Cu Fe Co)_z alloy can greatly improve the H_(CB)without decrease of Br,so that a machinable REPM w

The standard Gibbs free energy of formation of neodymiumborates was determined by means of emf measurements of cell with CaF_2 singlecrystal as well as ZrO_2 solid electrolytes.The measurements result inΔG_((NdBO)_3)~0=-1757+3.8×10~-(1T) and ΔG_((Nd(Bo_2)

The purpose of the present work is to introduce the principlesof field ion microscope-atom probe(FIM-AP)and the results of application tostudy the microstructure of materials.It includes the interaction between hydro-gen and the surface of refractory meta

Effects of volume and mechanical stability of retained austenitein 60Si2Mn steel on the resistance to HIC were investigated.The thresholdstress intensity of HIC K_(th) and rate of hydrogen-induced brittleness I_H wereused to assess susceptibility to HIC.T

The transmission M(?)ssbauer effect was first applied to mea-sure the content of austenite in a series of standard specimen,The measured results were accordant with the known content approximately.The concentrationof retained austenite in a series of M2 h

The variation of carbonate content in YBa_2 Cu_3 O_(7-x) supercon-ducting power for calcining process was studied by means of IR absorption me-thod.The carbon content was examined with Combustion-Gas Chromatographmethod.Each of them can be applied to chec

Phase composition,microstucture and mechanical properties ofSi_3 N_4-TiC-Co ceramic composites were investigated by SEM,TEM and XRD.It was found that TiC exists in the form of TiC and TiN whereas Co in theform CoSi.Mechanical properties were improvcd by t

Thin film of silicon dixide can be grown on the surface of sili-con by electrochemical oxidation at room temperature.The electrolyte for pa-ssivation may be organic solution or pure water.The thickness of oxidicfilm is changed by controlling the voltage.T

Tri(hydroxymethyl)aminomethane arsenate single crystal is a neworganic crystal,The large single crystal of optical quality can be easily grownfrom the aqueous solution by cooling method.The crystal structure has beendetermined by four-circle diffractomete

Liquid crystalline(LC)polysiloxane with cholesteric group inside chain has been prepared by a polyhydrosilylation reaction of poly(hydro-genmethylsiloxane)with a terminal alkenic cholesteric group.IR spectra incrystalline,liquid-crystalline and fluid isot

The melt-drawn films of high density polyethylene(HDPE)con-sist of highly oriented lamellar structure with their chain c axis parallel todrawing direction and b axis in the films plane.The lamellar growing directionis vertical to the drawing direction.Add

The complex electrolyte films of LiClO_4·(PEO)_n and LiCF_3SO_3·(PEO)_n were prepared by casting prccess.The AC cordtctivity (σ),ex-change current density at inferfaces (i_o),thermal and electrochemical stabilityof the films were studied.The conductivity

The linear condensation and sulfonation reactions of furfurylalcohol(FA)were studied by means of solution ~(13)C-NMR spectroscopy.Theeondesation and crosslinking reactions of FA and FA with tris(2-hydroxyethyl)isocyanurate(THEIC)were studied by solid-stat