Research Progress on Effect of Molybdenum and Nickel in Different Kinds of Steel
The influences of molybdenum and nickel on microstructure and properties of different kinds of steel under different heat treatment processes were summarized.
Materials Literature
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Adsorption Performance of Multi-walled Carbon Nanotubes to Trace Benzodiazepines
The adsorption performance of MWCNTs to four benzodiazepines including diazepam,estazolam,alprazolam and triazolam was examined.Four drugs can be adsorbed rapidly and quantitatively on MWCNTs in the static adsorption experiment,and the adsorption equilibrium was obtained within 10 min.The adsorptive capacities of MWCN…
Wear-resistant Properties of Plasma Sprayed WC-Co Coating On the Roller Bit Metal Seal Ring Surface
The seal stability of the metal seal ring directly affected the working life of the roller bit.The WC-Co coating was prepared on the surface of 20CrNiMo by plasma spraying technique,to expect more cure wear-resistance property.The wear behavior of the WC-Co coating under dry sliding against GCr15 steel was evaluated o…
Application of Magnesium Alloy to Seat Back Rest For Weight Reduction
A magnesium substitution design for an automotive seat back rest is carried out.With the magnesium extrusion profiles and the stamping panel integrated,the weight of the seat back rest is reduced by 41.3% and the lightweight goal is achieved.Numerical calculations in comparison with the original structure and the subs…
Effect of Exposed Mode on Atmospheric Corrosion for Carbon Steel at Qingdao Area
The effect of exposed mode on atmospheric corrosion for carbon steel at Qingdao area was investigated.The results show that the corrosion of carbon steel is the most severe under the B mode,which is under roof and face to horizontal by upward,and C mode,which is under roof and face to horizontal by downward.When the e…
EXFOLIATION CORROSION BEHAVIORS OF Al-Cu-Li-(Sc+Zr)ALLOY
Exfoliation corrosion behavior of Al-Cu-Li-(Sc+Zr)alloy with different aging treatment schemes were studied.The results show that the naturally-aged alloy has the best exfoliation corrosion resistance.The exfoliation corrosion are accelerated with prolonging the aging time at 160℃.Microstructure observations showed th…
Production and Market of Copper and Copper Alloys Strip
The paper reviews the varieties,production processes,equipments and marketing of copper and copper alloys strips at home and abroad,analyzes their development trends and points out that specializing,precisezing and building the energysaving, non pollution,continuous and automatic production lines are the directions of…
Hyperbranched poly(2-hydroxyethyl methacrylate) was prepared through the method of mercapto chain-transfer polymerization
PHEMA in solvent was prepared by the sodium thiolsurfuric-containing styrene type of AB monomer which was designed and synthesized as branched monomer from HEMA as polymer main monomer.DMSO as polymer solvent,AIBN as initiator through the method of radical polymerization.A new type of mercapto chain-transfer hyperbran…
SYNTHESIS AND PHOTO-DEGRADATION PROPERTIES OF C-DOPING MESOPOROUS TITANIUM DIOXIDE
Carbon-doping mesoporous titanium dioxide was prepared by evaporation-induced self-assembly method(EISA) with non-ionic surfactant P123 as structure directing agent,tetrabutyl titanate as titanium source and phenolic resin as additive.Succedently,mesoporous titanium dioxide could be obtained by calcining C-doping meso…
Synthesis of Hexaphenoxyl Cyclotriphosphazene and Its Flame Retardance on Epoxy Molding Compound for Large-scale Integrated Circuit Packaging
Hexaphenoxyl cyclotriphosphazene(HPCTPZ) was synthesized using titrating technology from a hexachlorocyclotriphosphazene solution,the structure of HPCTPZ was confirmed using FT-IR.The obtained HPCTPZ was introduced as a flame retardant into epoxy molding compound(EMC) for packaging of large-scale integrated circuits.T…
Analysis of Muscle Nutritional Components of Schizothorax kolzovi and Schizothorax grahami in Upper Reaches of Wujiang River
The results of the experiment that component of protein in the fresh muscle of Schizothorax kolzovi and Schizothorax grahami respectively were 15.49%and 15.78%,with fat 1.03%and 2.29%,ash 1.06%and 1.11%.There were 71.72%and 73.21%of unsaturated fatty acids in total ones.The total content of 18 common amino acids were…
Research Progress of Oxynitride Glasses
Oxynitride glasses has higher density,refractive index,young's module,glass transmission temperature,glass soft temperature and conductivity,more excellent chemistry stability,comparing to oxide glasses,and has been widely used in many fields,such as joining ceramics,solidifying high nuclear waste and toughening ceram…
Research on preparation and properties of magnetic abrasive by conventional solid-state sintering method
Iron powder surface was modified with SiO2 by sol-gel method.The coated iron evenly mixed with alumina powder and high temperature binder,then sintered after tabletting,and the magnetic abrasive with a certain size was obtained by crushing and screening.Scanning electron microscope(SEM),Energy dispersive spectroscopy(…
THE BROWNING AND OPTIMUM PRESERVATION OF CHITOOLIGOMERS
Chitooligomers have unique biological activities and functional properties,and are widely used in some fields such as food,medicine,agriculture and cosmetics. However, chitooligomers easily go bad and turn brown during storing. The effect of time,temperature,pH,O2,reductant and moisture on browning of chitooligomers w…
Numerical simulation on reactor of coke oven gas to synthesis gas
The reforming reactor of coke oven gas(COG) to synthesis gas was simulated for non-catalytic selective oxidation with Fluent,a computational fluid dynamic(CFD) software.Standard k-e model,P-1 model,and non-remixed combustion model were used for turbulence,radiation and chemical transform and reaction,respectively.The…
ANT COLONY ALGORITHM FOR COMPOSITE LAMINATE PLATES DESIGN AND OPTIMIZATION
The method of ant colony algorithm with mutation operation is employed to solve the optimization problem of the composite laminate plates with given total number of plies,to satisfy certain requirements and constraints.With the method and procedure of solving the traveling salesman problem(traveling salesman problem,T…
Advantages and Application of the Rubber Size Pick-up Roller and Press Roller
To upgrade the sizing quality with low consume of material,introduction is made to the advantages of the size pick-up roller and press roller of the latest generation and its application in sizing production.Through analysis of the problems such as surface rigidity,abrasion,cleaning in application,counteraction is giv…
Preparation,characterization and catalysis of CuO nanoflakes and ball-like nanostructures self-assembly from nanoflakes
CuO nanoflakes and ball-like CuO self-assembly from nanoflakes have been prepared hydrothermally at 150℃ for 10 h and 15h respectively,by using methenamine as precipitator.The phases and morphologies of the as-prepared products were characterized by X-ray powder diffraction(XRD),scanning electron microscopy(SEM),and t…
Hot Ductility of Cr21 Lean Duplex Stainless Steels
Hot ductility of two kinds of Cr21 lean duplex stainless steels was investigated by high-temperature compression/tension tests in the range from 950 to 1150 ℃,and the results showed the obvious difference between them in hot ductility.The effects of temperature,strain rate,ratio of phases and microstructure on the hot…
Antibacterial cellulose fiber grafted with quaternary ammonium salts by irradiation grafting
Surface contact disinfection technique is a newly developed method for water sterilization.In this process,the solid surface contact materials with antibacterial ability are used.The antibacterial performance will improve with the increase of antibacterial group on the surface of materials.A new type of antibacterial…