Materials Literature
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Combustion and emission characteristics of a common-rail,heavy-duty diesel engine fuelled with synthetic diesel from direct coal liquefaction(DDCL)were investigated.Results show that under the same operating condition,the ignition timing is retarded and the rate of heat release in the premixed combustion phase increas…
In this paper,the corrosion process of a tinplate in a functional beverage was investigated using electrochemical impedance spectroscope (EIS),scanning electron microscopy (SEM),energy dispersive X-ray spectroscopy (EDS),scanning probe microscopy (SPM),and X-ray photoelectron spectroscopy (XPS),and a corrosion mechani…
Phosphorus and silicate was removed from industrial grade ammonium metavanadate by magnesium salt precipitation,and mechanism of ephosphorization and desilication was analyzed,and high purity ammonium metavanadate was prepared.The effects of pH,temperature,addition amount of magnesium salt and time on the ephosphoriza…
The preparation of graphite oxide(GO) was carried out by modified Hummer′s method.The multilayer graphene was obtained by thermally exfoliation of GO.Subsequently,the in situ information of multilayer graphene-Fe@Fe3O4 nano-composite was carried out through the heated decomposition of carbonyl iron.The microstructure,…
Nd,Y,Mn doped BaTiO3 was coated with Al2O3 by three kinds of coating methods including solid phase method,non-homogeneous precipitation method and spray drying method.The effects of coating Al2O3 on the micromorphology,dielectric properties,dielectric nonlinearity and the change rate of capacity with temperature of pr…
Nine households of high,medium and low income leve(l3 households with 3 income level)were selected as representative household of Tai Lake basin and the following issue were studied to the measuring method of producing and discharge coefficient of rural household waste:producing coefficient of rural household waste mo…
According to the on-site investigation data of inorganic nutrients and algal cell density during Cochlodinium geminatum bloom in 2009,the influence of different concentrations of inorganic nitrogen and phosphorus on the growth of C.geminatum was studied in the method of batch culture under laboratory conditions.Fixing…
The morphology,size and composition of spheroidal graphite(SG) nuclei were researched by casting a series of different samples which were treated by the same nodulizer and different inoculants.Wedge and chill test pieces used for chemical analysis were cast.The observation of the SG nucleus was done by using of FE-SEM…
Compared to a batch reactor, where all reactants are initially charged to the reactor, the semi-batch reactor presents serious advantages. The feed of at least one of the reactants provides an additional way of controlling the reaction course, which represents a safety factor and increases the constancy of the product…
A novel high-boron high speed steel was developed by addition of boron to replace the expensive alloying elements in commerical high speed steel material.The effect of quenching temperature on microstructure of high-boron high speed steel containing 0.3-0.5%C and 0.5-2.5%B was studied.The results show that the as-cast…
The evolvement disciplinarians of microstructure after CMAS infiltering into various YSZ coatings were researched.Both YSZ coatings with simulated CMAS deposits that were heat-treated and YSZ coatings eroded by CMAS were delaminated.The coatings were analyzed through SEM and Raman spectrum.Results show that CMAS infil…
The acute toxicity of Chattonella marina at different growth phases and concentrations on Artemia Sinica was investigated in the present study.The results showed that the maximum toxicity of C.marina on A.salina appeared at the early stage of logarithmic phase,and the death rate of A.sinica reached 83% after 48 h when…
Three strains with excellent adsorptive efficiency are screened from the activated sludge in a sewage treatment plant to treat the heavy metal Zn2+.The influences of pH,temperature and concentration of Zn2+ on the adsorption of Zn2+ by the three strains are investigated.The results show as below: the adsorptive effici…
The catalytic synthesis of cyclohexanol from cyclohexene via cycolhexyl formate was investigated in an autoclave.The factor influencing the esterification of cyclohexene with formic acid and hydrolysis of cyclohexyl formate was studied respectively,and the reaction conditions were optimized.The one-pot synthesis of cy…
ZrO2/TiB2 composites was synthesized using TiC and B4C as raw materials by in-situ synthesis on the basis of 3Y-ZrO2.The bending strength,Vickers microhardness and fracture toughness of the composite were tested and analyzed.The results show that 3Y-ZrO2 is toughened and strengthened by in-situ synthesized TiB2 partic…
The corrosion resistant brass is widely used as heat-exchanging material,such as the condensation tubes in power plants and sea boats.This paper introduces the effect of alloying elements on the corrosion resistance of brass and their function mechanisms.Addition of rare elements can improve the corrosion resistance o…
Zinc nitrate as the oxidant,ascorbic acid as reducing agent and combustion agent,milky and rod-like zinc oxide rapid synthesized by combustion method.The sample was characterized by XRD,IR,UV,SEM.The Rhodamine B acted as target of degradation,the experiment inspected various sample,illumination time,dosage of zinc oxi…
Based on a meso mechanical analysis model of concrete material,a meso numerical approach is developed to investigate the nonlinear mechanical properties of reinforced concrete members.The damage process and the macro mechanical properties of a reinforced concrete column under axial compression are simulated by the pro…
The theory of thermal conduction of ceramic materials and thermal conductivities of current thermal barrier coatings were reviewed to increase further thermal insulation of plasma sprayed thermal barrier coatings.The methods of increasing thermal insulation of plasma sprayed thermal barrier coatings including seeking…
The new flower-like Bi2WO6 porous microspheres self-assembled by nanosheets were synthesized through a simple hydrothermal process using surfactants(CTAB,or SDBS) as the structure-directing agent.The effect of reaction time and surfactants played important roles in the morphology and size of Bi2WO6.The Bi2WO6 prepared…