Materials Literature
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Application status and disadvantage of exiting steel shot were analyzed. By micro-alloying and isothermal quench a new kind of steel shot with high toughness was developed. Through confirming the appropriate chemical composition of the steel and quenching parameters, the bainite structure was obtained. On the basis of…
Two kinds of typical wheat flours were selected and added with monoglyceride and calcium stearoyl lactylate/sodium stearoyl lactylate(CSL/SSL) as the emulsifiers to make the skins of quick-frozen dumplings.The effects of the emulsifiers on the quality of the products were investigated by determining the cooking proper…
The corrosion behavior of AZ31 magnesium alloy in NaCl solution of different Cl-concentration and pH value is investigated.The corrosion behaviors are described through analyzing corrosion rate and morphology of the corroded surface.Corrosion mechanism is also discussed.The results show AZ31 magnesium alloy is typical…
Precursor-Ni0.8Co0.2-xAlx(OH)2 with high tapping density is prepared by second stage drying method.The effects of the proportion of Co-Al,the concentration of NaOH solution,velocity of titration,drying method etc.on the tapping density of Ni0.8Co0.2-xAlx(OH)2(X=0,0.05,0.1,0.15,0.2)are discussed.X-ray diffraction(XRD)r…
This paper mainly introduces the application experience and pulping performance of a new type rotor for pulper,its outstanding advantages include low power consumption,high production,minimum load fluctuation and good adaptability to the waste paper containing high contaminant content.
The three--dimensional diffusion and mixing in the S-shaped micro-channel with rectangular cross section were studied in this paper by the numerical simulation method.The sample and reference liquid mix in micro-channel.The mixing efficiency coefficient is given to characterizing the uniformity of mixing.The results s…
A series of waterborne polyurethane(WBPU) adhesives for shoes were synthesized by a prepolymer process using dimethylol propionic acid(DMPA) and sucrose as a hydrophilic agent and a cross-linking agent,respectively.Their structures and thermal behaviors were studied by means of FTIR and DSC.Their water swelling,curing…
Based on conceptual design method,the experiment test and the simulation of the automobile's side frame components' general intrusion velocity curve and B pillar deformation mode,three simplification intrusion velocity curves which loaded to the specific position of the B pillars were extracted,and then the B pillar/d…
Ultra-narrow gap welding is characterized by lower welding distortion and high productivity.In ultra-narrow welding of the gap of 5 mm,flux strips can constrain arc to prevent it from going upside.Flux strips can control the heating zone effectively and increase the energy of arc to ensure good fusion of the sidewalls…
FeCo/Al2O3 nanocomposites were synthesized using a sol-gel technique combined with H2 reduction method.The microstructure and magnetic properties of the samples were characterized by X-ray diffraction,transmission electron microscopy and vibrating sample magnetometer.The results showed that nano FeCo in FeCo/Al2O3 com…
Cyclic voltammetry was used to determine the hydrogen diffusion coefficient in the electrode with nanocrystalline and non-crystalline rare earth hydrogen storage alloy.The XRD,TEM and SAED were used to character for the structure of the hydrogen storage alloy.The results show that the nanocrystalline has high degree o…
ZnO films were electrodeposited on conducting glass substrate from an aqueous solution containing Zn(NO3)2 as electrolyte.The deposition principle and process of ZnO were described.The effects of deposition potential and Zn(NO3)2 concentration on the deposition process,structure and characteristics of films were also…
The objectives of presented work were the development and manufacture of ready-to-pultrusion textile preforms for endless glass or carbon fiber reinforced plastic composites (GFC and CFC) by means of double needle bar multiaxial warp knitting technique. On basis of optimum laminate forming processes (MVI,pressclav-tec…
High temperature compression tests of AZ31 magnesium alloy were performed at 350℃.The microstructure evolution of the alloy during compression were investigated.The results show that the morphology changes non-homogeneous at different deformation zone.The grains are refined gradually and more homogeneous through furth…
In order to study the factors that influence the mechanical and burning properties of Combustible Cartridge Case(CCC),three kinds of CCC were manufactured through pulp molding method by adding polyacrylonitrile(PAN) fibers and self-made energetic fibers as reinforcement component.Mechanical property and closed bomb co…
Objective To prepare sustained-release PLGA microspheres containing ropicavaine and dexamethasone (Rop-Dex-PLGA-MS) and study drug release in vitro. Methods Rop-Dex-PLGA-MS was prepared with PLGA as carrier by a water-in-oil-in-water(W1/O/W2) duble-emulsion solvent evaporation method. Effects of various preparation pa…
The metallographic examination of 5083 and 5086 alloys was carried out, intergranular corrosion grade of the samples and the mass loss range can be determined by micrographical comparison.
The structure of Ethylene/Tetrafluoroethylene Copolymer Resin is briefly introduced in this paper and the manufacture of ETFE is summarized. Finally,the paper presents the application of ETFE.
CuO-CeO2、CuO-Ce1-xLaxO2、CuO-Ce1-xYxO2 catalysts were prepared by deposition precipitation method.Their catalytic performance for the preferential oxidation of carbon monoxide in the presence of excess hydrogen simulated proton-exchange membrane fuel cell(PEMFC) feed gas was evaluated and compared under the space veloc…
New technology of improving maize starch saccharification rate based on corn noodle ballast or corn flour as raw material,using extrusion technology to pre-gelatinization of the raw materials,and then double-enzymatic decomposition of raw materials,processed into glucose.The process has significantly shortened the ent…