Materials Literature
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The research on carbon nanotubes improved composite materials has become frontiers and hotspots in recent several years in the fields of nanomaterials for its ultrahigh characteristics and performances.And the dispersity of carbon nanotubes in the matrix exerts a significant influence on its functionality.The dispersi…
Basing on Maxwell Equations,both numerical simulation and experimental research on surface crack magnetic flux leakage field were implemented,and the cracks' three-dimensional model was established,and its tilt angle influence on the MFL field was discussed to get curves of the magnetic induction density(B),magnetic f…
The powder injection molding was simulated based on granular model.The granular was treated as rigid body which can have overlapping and the binder was treated as viscous connection between particles.The 3D powder injection molding of sampling clamp was programmed based on PFC3D.The results show particle gathering and…
A space-dispersed double-wall jet combustion system was developed by adopting the wall-guiding spray method and the stratification theory.The experimental test was carried out to optimize the structural parameters of the diesel-engine combustion system,including chamber structure,swirl ratio of cylinder head,included…
CrZrCu alloy coating was deposited on the steel substrate using the cold spray technology.The morphologies of CrZrCu alloy coating were investigated by means of scanning electron microscope(SEM).The corrosion behaviors of CrZrCu alloy coatings in seawater were characterized by potentiodynamic polarization and electroc…
The influence of fly ash with various additions on the efflorescence of hardened cement paste(HCP) is investigated by means of the analysis of the quantity and mineral constituent of efflorescence and the pore structure of HCP.The mineral constituent and quantity of efflorescence are investigated by X-ray diffraction…
The study of liquid-phase catalytic oxidation of methane to methanol is of great strategic significance for direct conversion and utilization of natural gas.For reaction solvents,catalysts and oxidant,new developments of methane catalytic partial oxidation to methanol in liquid phase were reviewed.Moreover,the directi…
The problems of fabrication of nano-composite coatings were introduced.The current status of technologies of the strengthening of nano-composite were overviewed and the principle and classification of electrolysis plasma strengthening technology were analyzed.The high energy density of liquid phase plasma make the mat…
Wet processing of high count flax fabric is introduced,and the influences of processing methods,dissolving temperature and bath ratio on water-soluble PVA removal are discussed.The results show that dissolving water-soluble PVA can be carried out with open-width jigger or continuous open-width washer.The former has go…
Billet temperature and mold temperature has huge impact on the deformation degree and deformation quality of titanium alloy.The laws of the first macro-crack on the surface of rolling TA7 titanium alloy after upsetting were studied by changing mold preheating temperature.When the billet and the mold temperature differ…
Hydrogen waste gas treatment costs and pollutant emissions were caused in polysilicon restore renewable hydrogen the exhaust dry recovery process by waste discharge of adsorption tower renewable hydrogen was reclaimed after purification by temperature swing, pressure swing adsorption, process .The huge economic and en…
A series of amorphous Ni-La-B catalyst was prepared by KBH4 reduction for liquid phase hydrogenation of dinitrotoluene(DNT) to diaminotoluene(TDA).The effect of n(KBH4)/n(Ni) and Co content on microstructure and catalytic performance of Ni-B amorphous alloy catalyst was investigated.The characterizations of XRD and H2…
Polishing of cotton fabric is carried out with acid cellulase HT-218. The influences of dosage of cellulase, working ternperature and time, pH value, as well as bath liquor on polishing effects are investigated. The polishing process conditions are optimized by evaluating the weight loss rate, tensile strength and ant…
The 25%glass-fiber reinforced PBT material with high strength and low melt flow rate was prepared by blending with toughening agents and special processing technology.Results showed that,through the reaction of two kinds of different toughening agents,the fiber reinforced PBT was with high strength and low melt flow r…
Under the material saving demand of automotive forgings,closed die forging process is always used to replace the conventional open die forging,which will cause lots of process problems.In order to solve the major issues and improve the performance of forgings,the upsetting extrusion method in the separable closed die…
Persimmon tannin is abundant as a kind of natural polymer,which has strong depreciate adsorption with heavy metal ions for the rich adjacent hydroxyl groups in the B ring.The metal adsorbents made by persimmon tannin developed rapidly during recent years because of the low cost,environment friendly and high adsorption…
The effect of the oxidation temperature on the structure and hydrogen resistance of oxide layer of commercial purity titanium was investigated in this paper.The phase,surface morphology of the oxide layer was analyzed by using of the XRD and SEM.The phase of the oxide layer formed in an oxidation temperature range of…
The anionic emulsions of paraffin wax and cardanol formaldehyde resin were prepared by phase inversion method.Surface sizing performance of the mixtures of oxidized starch and those emulsions was investigated.The results showed that the mixtures of paraffin wax and paraffin wax/cardanol formaldehyde resin with mass ra…
A direct determination method of Fe,Ni,Cr,Mn,Ti,Zn and Ca in powdered laterite nickel ore by portable energy dispersion X-ray fluorescence spectrometer was established using representative laterite nickel ore samples as calibration sample.The main element iron in calibration sample was certified by titration,while oth…
In order to obtain the dynamic mechanical properties of polycarbonate(PC)material in ambient temperatures,high strain rate dynamic compressive mechanics experiments of PC are done using split Hopkinson pressure bar(SHPB)technique at three different ambient temperatures:-50 ℃、+15 ℃ and +50 ℃.The availability of the dat…