Materials Literature
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Nitrogen-doped vanadium oxide films were deposited on Si(100) substrates by reactive sputtering.The optical properties of the nitrogen-doped vanadium oxide films were studied with SE850 spectroscopic ellipsometry in the range of 1 300 nm to 2 300 nm(NIR band).The measured ellipsometric spectra of the nitrogen-doped va…
The simulation of ammonia material gas hydrocarbonation process via employing three different reactor models were conducted and the simulation results were compared and analyzed.BWRS equation was chose for calculating the properties of reacting materials.The simulation result from Rstoic model agreed well with the pro…
A novel absorption material NdxYFe92.5-xB6.5(x=4,5,6,7) was prepared by vacuum smelting,ball grinding and proper annealing.It was shown by the test of the sample's properties that the microwave absorption value of the unannealed and annealed sample was high and have a narrow range fluctuation,while the unannealed samp…
The field-circuit-motion coupled model of line-start permanent magnet(PM) motors was established,and the finite element analysis involving control circuit and electromagnetic field was provided,and a moving air-gap boundary method combining motor motion equation was adopted to simulate the transient process of motor e…
Bi3.25La0.75Ti3O12(BLT) nanoplates were synthesized by hydrothermal method using Bi(NO3)3 · 5H2O,Ti(SO4)2,La(NO3)3·nH2O as raw materials,NaOH as mineralizer.The effect of hydrothermal time and hydrothermal temperature on the phase and structure of samples were inverstigated by XRD and SEM.The results indicated that fl…
Gas tubes of Xujiahe gas reservoir in West Sichuan have serious corrosion problems,which cause a great loss.This paper studied the corrosion mechanism of gas well through indoor and field simulation test and made an analysis by CorrosionAnalyzer software.It's found the corrosion was mainly caused by CO2 and the tube w…
A calculation formula of fiber number on cross - section of ring - spun yarn is deduced theoretically,which is being verified with the tested data of 20 representative pure cotton ring spun yarns.A predication formula with high precision for calculating fiber number on cross - section of ring-spun yarn is obtained.The…
In the case of heat treatmemt at different temperatures for 2 h,the surface oxidation weight increase,surface morphology and phase composition change of as-cast AZ91D magnesium alloy were investigated and analyzed by using of the metalloscope,SEM and XRD.Results showed that AZ91D magnesium alloy consisted of α-Mg and…
The viscosity properties,curing kinetics and mechanical properties of resin casting and carbon fiber reinforced composites using pultrusion process of hydantoin epoxy/methyl hexahydrophthalic anhydride benzene/2-ethyl-4-methyl imidazole system were investigated by DSC analysis,viscosity test and mechanical property te…
This article gives a brief introduction to the cleaning practice of radioactive waste repository decommissioning engineering in Beijing.Through a series of use of fine operation,such as grid points,sampling and stratification cleaning practice,we have strictly controlled the cleaning workload and the quantity of waste…
In this work we made a study of the effect of substrate type on the optical, structural and morphological properties of oxihidroxi Indium sulphide (In(O;OH)S) thin films, synthesized by CBD. Glass soda lime, glass coated with tin oxide doped with indium (ITO) and glass coated with tin oxide doped with fluorine (FTO) w…
The auto exhaust had caused serious environmental pollution,to remove the harmful materials in the automotive exhaust including the CO,HC and NOx,an effective method called as three-way catalytic converter(TWCC) had been applied.Three-way catalysis(TWCs) are the critical components of TWCC.As the forth-generation auto…
Bismuth(Bi)-doped magnesium silicide(Mg2Si) materials were prepared by a spark plasma sintering method.The Bi-doping content in the materials in a mole ratio was 0,0.7%,1.0%,1.5% and 2.0%,respectively.The results indicate that the maximum content of Bi in Mg2Si is 1.5%.The Mg2Bi3 appeared when the doping content was l…
Polyblends of PLA/POE-g-MAH/TAIC were prepared by melt blending and gamma-rays irradiation.Mechanical characterization,gel extraction and scan electron microscope(SEM) were employed to research the irra-diation effect of the blends.The results indicated that PLA/POE-g-MAH/TAIC blends could be in situ compatibilized by…
Mesoporous single-crystalline NiAI_2O_4 nanorods were successfully synthesized by a one-step hydrothermal method using a pore-forming agent(NH_4HCO_3).A series of controlled experiments were also carried out to better understand the formation mechanism of NiAI_2O_4 nanorods.The experimental results indicate that the r…
The cavitation erosion behavior of Cr-Ni-Mo duplex stainless steel and welded cladding layer metal of the same material in tap-water were investigated by using an ultrasonic experimental cavitation facility.The micrographs and microstructure of damaged surfaces were observed and measured by scanning electron microscop…
The green phosphor(Ce,Tb)MgAl11O19 was prepared by using microwave synthesis,the result of orthogonal experimentation was analyzed.The optimal process conditions were the holding time 90 min,the calcination temperature 1 450 ℃,the heating rate 15 ℃/min.The samples were characterized by the methods of fluorescence spec…
Cold ramming paste of ramming temperature at 20±5℃ for aluminium electrolysis cell was synthesized with Furan resin as binder,electro-calcined anthracite and graphite as aggregate.It is much better than that of some domestic factories,but a concern gap between foreign products through properties tests.What's more,we u…
Formed activated carbon block was prepared using powdered activated carbon prepared from bagasse with phosphoric acid activation.The influence of various preparation parameters such as the type binders and the amount of the binders was investigated.The test results showed that the iodine value of quantity adsorption a…
Magnetite(Fe3O4) nanoparticles were synthesized by solvothermal synthesis method and thermal decomposition method using Fe-urea complex as raw materials.The synthesized Fe3O4 nanoparticles were char acterized by X-ray powder diffraction XRD,N2 adsorption-desorption,magnetic measurements and TEM.The result shows that t…