Materials Literature
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The synergistic stabilization effect of different metal lanolin fatty acids as natural-based thermal stabilizers for poly (vinyl chloride) (PVC) including calcium lanolin fatty acid (Calan2), zinc lanolin fatty acid (Znlan2) and Lanthanum lanolin fatty acid (Lalan3) were studied. The processability of PVC was tested b…
Pd/CNTs was prepared by impregnation with PdCl2 and carbon nanotubes (CNTs).Before impregnation,CNTs were purified and modified using H2SO4 and HNO3.The resulted Pd/CNTs was characterized by ultraviolet spectrophotometry and XRD.It was showed that Pd was loaded on the CNTs and its content was 0.97 %.The structure of C…
The formation energy of complex carbonitrides of titanium and molybdenum,which may precipitate in low alloyed steel,was computed using materials studio-CASTEP module.The calculated results indicate that the effect of molybdenum on the formation energy of(Ti1-xMox)C presents a parasol trend.The formation energy of(Ti1-…
Using ions coprecipitation method,four kinds of carbonated hydroxyapatites(CHA) were synthesized by changing addition way and order of CO2-3.The phase composition,chemical composition,micromorphology of obtained CHA were characterized by X-ray diffraction,Fourier transform infrared spectroscopy,Scanning electron micro…
Radiation field intensity in the primary coolant system of water-cooled reactors could be reduced by chemical decontamination process.Thus,the recent research progresses of the decontamination process and its corrosion effect on structural materials of the primary coolant systems were summarized in this paper.
The cotton pulps pretreated with PFI refining,dimethyl sulfoxide(DMSO),4% sodium hydroxide respectively and without any pretreatment were used as raw material to prepare the cellulose nanocrystals(CNCs) by acid hydrolysis.The properties of the CNCs were characterized by scanning electronic microscope(SEM),X-ray diffra…
The AUTODYN software was applied to simulate the detonation wave front,pressure field,shape and velocity distribution of the explosively-formed projectile(EFP) under center point initiation,plane wave initiation,column wave initiation and annular wave initiation.Simulation results indicated that the detonation waves f…
The axial stress and the axial deformation of the charge explosive in a projectile was theoretically analyzed during the penetration process.The corresponding distribution functions along the axis of the charge explosive were attained by considering the elastic and plastic deformation of the charge explosive.Based on…
The research status of micro-alloying and composite micro-alloying of Al-Zn-Mg-Cu series aluminum alloy were reviewed.The micro-alloying,composite micro-alloying characteristics and action mechanism of Zr,Sc,Sr and other elements(Pr,Yb,La,Er,etc) were presented.The micro-alloying of Al-Zn-Mg-Cu alloy was put forward.
Numerical simulation of filling time,solidification time and defects were done during the casting production process of YZ108 cylinder liner by Anycasting using orthogonal experiment.How these three factors,gating temperature,injection speed and slow/fast shot distance under three different levels affect filling time,…
The desulfurization of diesel oil was conducted via oxidation-adsorption process,using H2O2 as oxidant in the presence of amphiphilic catalyst and mesoporous silica-gel as the adsorbent.The fixed-bed dynamic adsorption method was employed to evaluate the oxidation-adsorption desulfurization capability of the catalysts…
The pendulum bob and platform crash tests for designed aluminum alloy car bumper beam with thin-wall,hollow cross section and strengthening rib simulated by the finite element analysis software-LSDYNA,some revevant tests were performed and the crash properties of the aluminum alloy beam was compared with that of the s…
Extreme middle break loss of coolant accident(MBLOCA) occurring at cold leg was analyzed with the RELAP5/MOD3.2 code for a marine reactor,and different accident processes were simulated separately under the conditions of cold leg safety injection and hot leg safety injection.Based on the concept of critical pipe which…
To study the effect of process parameters on the microstructure and corrosion resistance of microarc oxidation(MAO) coatings,the MAO coatings were prepared on AZ31 Mg alloys in the electrolyte of sodium phosphate(Na3PO4) at various applied voltages.The microstructures of the samples before and after corrosion were obs…
By optimizing formula and technology of Al2O3 ceramic coating and adding a proper amount of CeO2,the interface morphology,microstructure,binding force and corrosion resistance of the coating were studied.The results show that proper addition of CeO2 can increase the compactness,binding force and corrosion resistance o…
The corrosion behavior and electrochemical characteristics of pure Zn and Zn-Al pseudo-alloy coatings in chlorine ion-containing environment were investigated by salt spray test and electrochemical impedance spectroscopy(EIS).The surface morphologies and phase compositions of the coatings and the corrosion products we…
The emerged background of ultra-low carbon bainitic(ULCB) weld metal and the main factors on the properties of ULCB weld metal were introduced.ULCB weld metal has good performance,but chemical composition,and the selection of welding method and differences of protecting atmosphere have great effects on the properties…
Polypyrrole(PPy) was prepared by cyclic voltammetry on a platinum electrode in H2SO4/H2O and LiClO4/CH3CN solutions,respectively.The effects of electrolyte solutions on overoxidation of polypyrrole during its electrochemical polymerization were studied by in situ spectroelectrochemical measurements.Compared with the s…
A series of metal-modified heteropolyacid salt catalysts(MXH3-2XPW12O40,M=Zn,Cu,Cs,Ag)were prepared,and the solid heteropolyacid salt Ag3W12O40 was used in hydrolysis of glucose to produce levulinic acid.The surface structures of different heteropolyacid salt catalysts were characterized by means of FTIR,XRD.The surfa…
CdS quantum dots(QDs) were synthesized at room temperature using water as the solvent and Glucosamine(GlcN) as capping ligands.The structure,morphology,and spectral properties of the prepared samples were characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM),ultraviolet-visible(UV-Vis) spectros…