Materials Literature
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ZnO seeding layer film with c-axis orientation was deposited via dc magnetron sputtering on glass substrates.The reaction solution of zinc nitrate(Zn(NO3)2·6H2O) and methenamine(C6H12N4) at the same mole concentration was prepared,and the reaction solution was added with different mole fractions of aluminium nitrate.T…
The failure reason of fire coupling was analysed by macro-inspection,control analysis of casting accuracy,metallographic examination,chemical composition and energy spectrum analysis.The results show that the main reason for the fire nozzle fractre are the casting defects of fire nozzle,lack of modifictation treatment…
The particle reinforced metal composite is prepared for space application.The SiCp/Al composites with different size(10μm,20μm)are successfully fabricated through squeeze casting method with 45% volume fraction,and the thermal and mechanical properties of SiCp/Al composite are studied.Results show that after T6 heat t…
The shock properties of C100 concrete is investigated by gas gun planar impact technique.The manganin pressure gauge is used to measure the pressure-time curves of the specimen.The parameters of high-pressure equation are obtained by the numerical simulation.Because the impact process is very short,at the same time,th…
通过反相悬液交联法制备出了Fe3O4壳聚糖磁性微球，以3-丙胺基三乙氧基硅烷（APTEs）为硅烷偶联荆，采用后修饰法得到硅烷化SBA-15介孔分子筛。以戊二醛为交联剂将Fes04壳聚糖磁性微球接枝在硅烷化SBA-15介孔分子筛上。运用X射线衍射、傅里叶红外光谱等手段对Fe3O4壳聚糖磁性微球（MCS）接枝后的硅烷化SBA-15介孔分子筛进行了表征。分析结果表明，Fe3O4壳聚糖磁性微球通过硅烷偶联剂以化学键形式结合在SBA-15介孔分子筛上。
The V-Co-β and V-Ni-β zeolites were hydrothermally synthesized,and amphiphilic zeolites(TMS-V-Co-β,TMS-V-Ni-β) were prepared by using TMS to modified parent β zeolite.The structure of the zeolite samples were characterized by XRD,FT-IR and SEM.The catalytic properties of the zeolite samples in the phase-boundary react…
The initiation fracture of the tyre cord wire rod has been investigated with metallographic microscope and Scanning Electron Microscope(SEM) to analyze potential causes of failure and provide relevant approaches of prevention.In order to reduce the frequency of fracture on wire rod for tyre cord,it's suggested that tw…
[Objective] The research aimed to analysis the synthesis and the structure of cationic polyacrylamide.[Method]Cationic polyacrylamide is synthesized by copolymerization technique using formaldehyde,dimethylamine and acrylamide as raw material,(N4HSO3-(NH2)SO3H2O as initiator.The optimal scheme is determined by using o…
In this paper,recycled high-density polyethylene(RPE) was compounded with sericite powder,resin acid and a dispersant via a twin-screw extruder resulting in a RPE/sericite composite.The tensile,flexural,impact,and microstructure properties of the composite were measured to identify the effect of sericite loading on th…
Currently tobacco is still a large number of storage areas in the use of chemical fungicides.Chemicals in tobacco processing due to the irrational use of residual security issues to the potential impact of tobacco smoking.This analysis has been stored in smoke mold technology,based on the combination of domestic and i…
Maleic acid(MA) as the crosslinking agent,the water resistance of polyvinyl alcohol(PVA) was improved by chemical crosslinking.The result showed that the water resistance of chemically cross-linked PVA membrane increased with the increase of MA concentrations.The degree of crosslinking and crystallinity of PVA was mai…
An environmentally acceptable Cr-and P-free passivation agent SF-563 suitable for coating of Al wares was developed.The optimized passivation technology was established,and the properties of as-obtained passivation coating were evaluated.As the results,the optimized passivation parameters are suggested as bath concent…
This paper,in combination with the research on the prefabrication process of the high speed turnout slab with embedded pipe sleeves,sums up its special technology of prefabrication process,including the mould installation,steel skeleton processing,pipe sleeve embedding and the turnout slab demoulding,turn-over,transfe…
Mechanical properties and deformation mechanism of as-forged AZ61 magnesium alloy from room temperature to 150 ℃ were studied.The results show that in tensile speed of 1 mm/min,as the stretching temperature increases,the grain boundaries are softened gradually and dynamic recrystallization grains reduced,while twinnin…
BiFeO3 thin films were prepared on hydrophilic FTO/glass substrate by chemical solution deposition.XRD,FE-SEM,XPS,Agilent E4980A precision LCR meter and TF-Analyzer2000 were used for the characterization of BiFeO3 thin films.The results indicated that the thin films were the well-crystallized BiFeO3 thin film with mul…
The major methods for the characterization of grapheme layers were summarized,including transmission electron microscope(TEM),Raman spectroscopy,atomic force microscope(AFM),optical microscope and scanning tunneling microscope(STM).The disadvantages of these methods are also pointed out as a conclusion which need to b…
In our reseach,paste electrode and powder microelectrode of NiOOH have been fabricated and their electrochemical property have been examined by cyclic voltammetry.The results show that there are one oxidation peak and one reduction peak for the powder microelectrode and only reduction peak for the paste electrode.It i…
Nanotechnology involves the creation and manipulation of materials at the nanoscale level to create unique products with novel properties. Nanomaterials (NMs) such as nanotubes, nanowires, fullerene derivatives (buckyballs) and quantum dots are currently used for imaging, sensing, and targeted gene ...
A two-dimensional model of thermal barrier coatings was established and the influence of the interface morphology on the residual stress distribution was calculated by means of the finite element software ABAQUS.The results showed that the σ22 tensile stress concentrated mainly at the wave crest of the thermall grown…
The corrosion behavior of 0359 aluminum alloy was studied by salt spray corrosion test in the simulative environment.The influence of Cl-concentration on corrosion performance was investigated,and the surface morphology,corrosion products,pitting depth and mass loss of the corrosion sample were analyzed.The results sh…