In recent years,much attention has been paid extensively to intermetallics Fe_3Albecause of its high strength,excellent oxidation and sulfidation resistance,lower density and lowmaterial cost.Many research works have been finished and many valubale result

This paper studied the effect of various content of RE and Ce on the oxidationbehavior of Ni_3Al-B and Ni_3Al-B-Cr-Zr alloys at 1050℃ and 0.1MPa,respectively.The resultsshow that adding small amount of rear earth element can promote the nucleation of Al_2

Some studies of the polytypoidic structure in Bi-system superconductors byX-ray precession photographs,electron diffraction and TEM technique are made.A strongincommensurate modulation reflections were observed by these methods in Bi-system 2223phase.The

The coupled growth of γ-Co and Cr_(7-x)Co_xC_3 under laser remelting forCo-Cr-C alloys which are basic alloy system of Stellite alloys was investigated.The resultsshow that a skewed coupled growth zone of γ-Co and Cr_(7-x)Co_xC_3 exists in the Co-Cr-C all

In this paper,the low-temperature fracture behavior of a mild steel 16Mn hasbeen investigated at the strain rates of 5.55×10~(-4)/s and 1.1x10~0/s,respectively.The resultsindicated that the cleavage characteristic stress S_(co)is nearly independent of str

The surface segregation of phosphorous in Ni_(84)P_(16)amorphous alloy has beeninvestigated by means of AES with heating in situ.Within the experimental temperatures,thesurface segregation of P was controlled by bulk diffusion,surface concentrations varie

A two-year survey of atmospheric corrosion of A3 Steel in industrial cities inLiaoning has been made.The results of the field exposure have been analyzed in combinationwith environmental data.The time of wetness and the amount of pollutant SO_2 seem to be

A two-year survey of atmospheric corrosion of zinc in Liaoning rural area hasbeen made.The results of the field exposure have been analyzed in combination with localenvironmental data.A corrosivity map of rural area of Liaoning has been deawn.A formula is

Using dual-ion beam sputtering deposition method,DLC films were depositedon glass and silicon substrate under different CH_4 flow ratios(CH_4/(CH_4+Ar)from 0% to100%)in bombarding ion source.The structures and the properties of the films were systemati-ca

In this paper,the dispersion methods for ultrafine(<100nm)magneticcarbonyl iron powder and non-magnetic ceramic SiC,Si_3N_4 particles have been successfullystudied.The suitable dispersing agent and processing technique were discussed.Based on acomprehensi

A Pb(Fe_(1/2)Nb_(1/2))O_3 ferroelectric ceramic with single perovskite phase was pre-pared using mixing and calcining the constituent oxides.The temperature dependences ofdielectric constant and thermally stimulated current were measured.The results indic

Self-similar two-dimensional fractal structure was observed during molybdenavapor deposition.It consisted of the numerous micro-meter-sized whiskers that were stackedtogether according to a certain principle.Some″flowers″of molybdena crystal with the comp

The transformation of morphology and texture of polypropylene melt duringnon-isothermal crystallization has been continuously observed by optical microscope and hasbeen compared with the results of acoustic emission(AE)at the same cooling rate.During thel

In this paper,the morphology and structure of polyrstyene/poly(2-ethylhexylacrylate)and polystyrene/poly(butylacrylate)core/shell latex particles were investigated.Theeffects of the amount of the emulsifer and monomer as well as the charging method on the

In″Panel Experiment″,two diagrams of sound pressure level vs.frequency areobtained for a free damping panel(bare panel adds Castor oil/TDI+HEMA)and a bare panel.It is found that the sound pressure level of the tree damping panel is much lower than that of

A fatigue crack propagation in uPVC in the presence of organic solvents andwater was studied,and observations of the fatigue fracture surfaces were made.The results showthat:(1)the fatigue crack propagation rate in solvents decreases to 1/10—1/3 of that i

The resistivity for carbon fiber(5-50v.%)in the MDF(macro-defect-free)cement have been measured over the range(100-300K).The results show if the valume percentof carbon fiber increases from 5—50v.%,the resistivity(1gρ_v)of composite changes over therange(

Interfacial characteristics and effects on material properties as well as controllingof interfacial bonds were studied in the systems of BK-10 glass fiber reinforced PMMA and PCthermoplastic composites.Coating the fibers with organosilane coupling agents