The simulation principle and method of infiltration process of molten aluminium into porous media was proposed on the basis of fluid flow simulation principle in order to manafacture porous aluminium by infiltrating method. Two apparatuses were designed a

It is found that the critical transition film thicknesses from elasohydrodynamic lubrication (EHL) to the thin film lubrication (TFL) and from the thin film lubrication to the boundary lubrication (BL) are related to the initial viscosity of lubricant, su

A hot high-pressure compaction of melt--spun amorphous metallic ribbons which produces fully-densed bulk amorphous samples, was developed by using an amorphous Ni69Cr7Fe2.5Si8B13.5 alloy ribbons as a model material. Under a pressure of 1.5GPa, the crysta

Molecular dynamics simulation of confined lubricant has been performed in a spherical molecule model. Results show that as film thickness diminishing, the effective viscosity increases and the critical pressure of solid--liquid transition decreases. The

On the basis of investigating the structure evolution of Cu-30Ni alloy with variousundercoolings, the feasibility of unidirectional solidification in the undercooled alloy melt was evaluated, and the mechanical properties were tested. With undercooling in

The atomic orbital interaction existing in the interface between matrix metal Ni and ZrO_2 particles was investigated by XPS, UPS and ESR, and corresponding orbital interaction molecular model was proposed. The high electrocatalytical activity of Ni--ZrO2

On the basis of density of states and valence orbital energy diagrams of Fe3+O2-6 cluster and Fe3+O2-4 cluster which are calculated by DV-Xα method, the transition energies, transition linewidths and oscillator strengths are given for Bi-YIG in the wavele

The internal friction of foamed aluminium in acoustic frequency has been studied. It shows that the internal friction of foamed aluminium enhanced in comparison with that of massive aluminium, the internal friction decreased when frequency was raised and

The thin films of NiOx, which thickness smaller than 0.1μm,were prepared by reactive sputtering of a Ni target with a mixed gas of argon and oxygen. The samples then were heated in air. It was found that the transmissivity and conductivity of the samples

The cutting experiments of four tools, whose materials were St3N4--based ceramics (FD03),Ti(CN)-based ceramics(FD22), YT15 cemented carbide, and high speed steel(HSS), respectively, to 304 stainless steel were carried out on a lathe. The cutting performan

The phase distribution of ceramic coatings formed by microarc oxidation on LY12 Al alloy was investigated by XRD method, the formation mechanism was also discussed. The results show that the ceramic coatings mainly contain a--A12O3, γ-Al2O3 phases, the α

Fatigue experiments of surface crack with wedge and without wedge subjected to low freqency tension and high frequency bending have been performed. The results show that crack arresting technology of "artificial wedge" has remakable effect on suface crack

The microstructure and phase constituents of ZA12 and ZA27 alloy prepared by casting and liquid metal forging process have been comparatively researched by means of SEM, TEM, XRD and energy spectrum analyses. The results show that the microstructure has b

The electronic band structure and static properties in the β-C3N4structure are calculated using the LMTO-ASA method. The calculation results for the lattice constant, bulk modulus, cohesive and electronic band structure agree with that results of ah init

The glass transition temperatures related to thermodynamic functions, kinetic parameters, and heating rate are studied based on the specific heat measurements of Zr657.5 Al7.5 Ni10Cu15Co2.5alloy in nanoccrystals, crystals with normal grain size, liquid an

Evident changes in X-ray diffraction patterns are observed in surface or sub-surface layers of 16Mn and 300M steel specimens which have been tested under cyclic stress with stress levels equal to fatigue limits of correspondent steels and did not broken u

The polarization of carbon-fiber hardened cement paste (CFRC) at electric conduction is studied. The results show, the polarization has a notable effect on the electric conductivity of the CFRC.But the polarization can be controlled by adjusting the conte

In this paper, the components of canna starch and its graft copolymerization with methy methacrylate were studied using manganic pyrophosphate as an initiator. The results show that the average diameter of the canna starch granules is about 38μm, the amyl

A new multiple hollow cathode sputtering target, which has a simple structure and a high sputtering rate,was put forward. The sputtering rate can be controlled by changing target voltage, pressure and H. D-1. The result shows that this method has a high d

ZrN films were deposited by reactive magnetron sputtering.The crystalline quality of ZrN films was investigated by X-ray diffraction. The results indicated the growth of zirconium nitride had the(l I l) orientation priority. Controlling the growth conditi

A copolymer was synthesied through the copolycondensation of a hydroxyl terminated polydimethysiloxane (PDMS), epoxy resin (EP). The morphology of the polymer was examined by means of TEM. The compatibility between PDMS and EP is improved. The modified re

A new n-type amorphous silicon material, which is prepared by doping with Yttrium by r.f.sputtering, has been obtained. Temperature dependence of conductivity for several samlpes containing different concentration of Y shows that, as the concentration of

An investigation has been made on the behavior of Al during the solidification of M2 high speed steel and the effect of Al on the microstructure of the steel. Al has the effect of expanding the delta-ferrite crystallizing region and make the steel crystal

Ferricnitrate was dissolved in mixture of acetylacetone and 2-methoxyethanol to prepare coating sol. The homogenious and transparent Fe2O3thin films were made by dip-coating. FTIR spectrum and XRD results show that iron(Ⅲ) acetylacetonate is formed in the

Kinetics of inverse emulsion polymerization of methylacryl ate-methylammonium chloride in-itiated by potassium persulfate-urea system has been studied.Polymerization rate equation has been obtained under the condition that [K2S2O8] is (12.3~73.8)μmol. L-1