Materials Literature
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The natural sepiolite was modified with acid and heating.The Cu2+,Pb2+,Zn2+ mult-metals wastewater was treated by the modified sepiolite through single-factor experiment.The results showed that the concentration of acid was 0.9 mol/L,the time of acid-activation was 29 h,and the temperature of heating-activation was 45…
Two kinds of welding rod,A302 and ENiCrFe-3,were used separately to weld 0Cr18Ni9 steel and 20G steel forming dissimilar welded joints.Behaviors of resistance to hydrogen sulfide stress corrosion cracking of the dissimilar welded joints in solutions containing different concentrations of hydrogen sulfide before and af…
The field distribution and the dynamic balance process of the insulator surface under heavily icing condition are mainly related with the conductivity of ice water and the length of air gap,but are slightly affected by types or materials of insulators.A columnar model of insulator icing was established,and the dynamic…
The effect of speed ratio,rolling reduction ratio and annealing on the recrystallization grain size of AZ31 magnesium alloy sheets was studied under the condition of differential speed rolling process.It is shown that the grains can be significantly refined by increasing the speed ratio and reduction ratio.But when th…
Molecular dynamic simulations were performed to study the effect of the incident energy on the interreaction of C+ ion with Be sample surface.The simulated results show that with increasing C+ incident energy,the C+ implantation depth increases and the sputtering yield of Be increases near-linearly.However,the retenti…
The Axial Forward Projection Fragment Warhead is an efficient multi-purpose warhead,which can form a relatively energy concentrated group of cluster fragment in the axial direction and uniform distributed natural fragments in the radial.Thus,the comprehensive damage field can not only effectively compensate for the la…
Aiming at the demand of optimized geometry parameter design of CPR1000 reactor vessel insulation for in-vessel retention by external reactor vessel cooling(IVR-ERVC) under severe accident conditions,Relap5/Mod3 code calculations of ERVC uncertainty propagation,with parameter combinations acquired by Latin hypercube sa…
Long straight rod bundles are electric-heating-simulated fuel assembly with primary structure.When electric circuit is exerted on rods,attraction and repulsion effects are generated in rod bundles.To ensure use feasibility of simulated fuel rods,experimental research on attraction and repulsion effects on electric hea…
Effects of boiling water sealing,nickel acetate sealing and ammonium adipate sealing under voltage loading on corrosion resistance of anodic oxide films on LY12 aluminum alloy were studied.Surface morphology and corrosion resistance of the anodic oxide films on aluminum alloy sealed by the three chromium-free methods…
Using the lowcost fuel grade petroleum coke as the main material,anth racite,charcoal and compound charcoal particle as auxiliary raw materials,and coal pitch as binder,the lowcost prebaked anode with good chemical and physical properties used for electrolytic aluminum was produced successfully.This proce ss involved…
The ultra high molecular weight polyethylene(UHMWPE)/montmorillonite(MMT) nanocompo-sites were used to produce composite nanofiber by self-made experimental melt spinning machine.Microstructure characteristics and mechanical properties of the composite nano fiber were studied by SEM observation,X-ray analyses,DSC anal…
A method based on the fractal dimension is presented for weak and dim bubble detection on magnesium melt aiming at image identification under complex background.At first,the gray of image is enhanced to locate the target coarsely after frame subtraction of fore and after images in which the bubble appears.Then,Differe…
In order to simulate the response of hexanitrostibene(HNS) pellets in exploding foil initiators under heat environment,sealed sample tubes were designed.The cook-off tests of HNS pellets in Φ3 mm×4 mm,Φ4 mm×5 mm and Φ4 mm×6 mm with TMD in charge density of 90%,were carried out at the heating rates of 3.3 ℃·h-1,5,10 ℃·…
To explore the effects of metal nanoparticles on plant growth,agar culture simulating soil was used to characterize the root elongation and relative physiological and biochemical behavior of wheat(Triticum aestivum L.) under stress of copper oxide nanoparticles(CuO NPs).The results showed that the inhibition of root e…
Combined strengthening process of new high thermal stability die steel 5Cr2NiMoVSi was studied.The process is nickel plating then RE-boriding and then pre-cooling quenching and last high-temperature tempering.The results show that surface micro-hardness,high temperature oxidation resistance,thermal fatigue resistance,…
After the preparation of the ferrite Ba(Zn0.65Co0.35)2Fe16O27 powders by chemical co-precipitation and high temperature flux techniques,then we make up the ferrite powders/M-glass fibers/epoxy composite panels by manual technology.And then we use waveguide method to test the properties of the panels.The research shows…
Iron-based alloy was prepared via hot extrusion,hot rolling and annealing by using gas atomized Fe-12Cr-2.5W-0.4Ti-0.25Y powders with mass fraction of 1% Fe2O3 addtion powders.The effect of Fe2O3 addition on microstructure and properties of iron-based alloy was investigated.The results show that formation of Ti-,Y-,Cr…
A novel flame-retardant synergist,thermalplastic boron-containing phenol-formaldehyde resin(BPF),was designed and successfully synthesized to modify Magnesium hydroxide(MH) flame retardant polyamide-6(PA6).The synthesized BPF was characterized by FTIR,1H-NMR,XRD and TGA,etc.The experiment results showed that BPF posse…
The trdatianal metal organic deposition(MOD) containing metal trifluoroacetates(TFA) is a long process to fabricate YBCO films,it is unsuitable for the industrialized production.In this paper,the YBCO precursor solution was improved by the inclusion of high-boiling-point solvents such as diethanolamine(DEA),it can be…
ITER equatorial port cell outside bio-shield plug is a place for allowing free personnel access after shutdown which accommodates various sensitive equipment and pipes.To ensure the personnel safety in port cell after shutdown,the distribution of dose rate in port cell was studied.Based on VisualBUS(CAD-Based Multi-Fu…