Materials Literature
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GCrl5 steel was heat treated and deep cryogenic treated by different processes,its hardness,residual austenite amount and impact toughness were tested,and the fracture of impact specimen was analyzed as well.The results show that the impact toughness of GCrl5 steel is chiefly affected by as-quenched microstructure,res…
Mathematical analysis was carried out on the stress condition of the carbon fibre reinforced by the polyurethane sealant with seawater pressure using the theory of composite laminated plates.Combined with the pressure test results,the aging and leakage performance of carbon fiber reinforced PU sealant was analyzed.Res…
The chemisorption of energetic the atom of silicon on silicon(111) surface was investigated by molecular dvnamics simulation using many-body interatomic Tersoff potential.At 100K,molecular dynamics simulation are performed to investigate the microscopic process when a silicon atom bombards six different bombarding sit…
In this paper,the blends of recycled PVB/ABS blends、compatabilized PVB/ABS blends and its blends filled with nano-CaCO3 were prepared. The effect of PVB on mechanical properties of ABS,compatabilized PVB/ABS blends and its blends filled with nano-CaCO3 were investigated. The results showed that addition of ABS-g-MAH a…
The plain-woven fabric with the equal warp and weft density was used as the reinforcing materials for composite products.A set of sample fabrics made of aramid 1313 staple fiber were designed and woven in this research.The tearing test with single rip method was carried out.Results showed that tearing strength of fabr…
In the punctured unit disk of E={z:0|z|1},making use of a linear operator Lp(a,c) we define two subclass Ωp(a,c;A,B) and Ω+p(a,c;A,B) based on the meromorphic multivalent functions,the concept of neighborhoods of meromorphic multivalent functions are introduced,properties of subordination and related properties are di…
Electrospinning method was used to fabricate PVA nanofibers.The effects of solution mass concentration,conductivity and applied voltage on the vertex angle of envelope cone formed by exactly rapid moving jet,nanofiber deposited area and average diameter were investigated by a digital camera and SEM.The results indicat…
In order to test foaming capacity and stability,Waring Blender method was used to test 7 common foaming agents and the results showed that the largest volume of AOS,AES and AOS+AES were all more than 1 080 mL at room temperature(20 ℃)and the stability under the condition of salt were all better than others by synergis…
Some characteristics of high-speed milling and EDM process in manufacturing tire moulds,their advantages and limitations were analyzed according to the pattern feature of mould for radial tires.Some selection of basic rules for tire mould manufacturing process was suggested and some schemes used for various types of t…
Multi-arc ion plating technique is adopted to deposite five different thickness TiN coatings on W6Mo5Cr4V2 high speed steel.A curvature method and a finite element method are used to study the TiN coatings residual stresses.Results show that TiN coatings thickness affects greatly on residual stresses,especially on int…
The channels of nanometer MCM-41 was used as template and the nanoclusters of dibromo-p-chloroarsenazo(DBC-ASA) were prepared by incorporation.Chemical analysis,powder X-ray diffraction,nitrogen adsorption-desorption at 77 K,infrared spectroscopy,solid state diffuse reflectance spectroscopy and luminescence spectra we…
In this paper is introduced the production technology in processing one direction twisted strong plying twist product with its focuss on the difficult weaving preparation process which helps the product to be produced on air-jet loom.After finished,the fabric is crisp,smooth,glabrous and comfortable,and fit making spr…
Microporous polymer honeycomb films with hexagonal pores were prepared by self-organization under humid conditions.The amphiphilic polymer acted as a stabilizer of condensed water droplets and prevented water droplets from fusion.The honeycomb film was shrunk by a shrinkable film.Various shapes could be formed upon th…
The hydroxyapatites were prepared by hydrothermal synthesis,microwave synthesis,and calcination synthesis from abandon egg shells. The properties of hydroxyapa-tites were characterized by chemical analysis and IR spectroscopy. The advantages and disadvantages of each method were compared.
Nano-powders of Al2O3,Si3N4 and ZrC were dispersed by using dodecyl benzenesulfonic acid(SDBS),hx-adecy ltrimethyl ammonium bromide(CTAB) and sodium alginate(SA) at first,and then were added to the nickel plating solutions,respectively.The(Ni-P)-Al2O3,-Si3N4 and-ZrC plating on polyamide(PA) fabrics were fabricated in…
The leaf-like quaternary nanocrystals alloy was synthesized in the solution composition of P123/Liquid Paraffin/water,P123 as the surfactant.The structure,composition and property of the samples were studied by TEM,XRD.The result show that the pine needle-like nanocrystals alloy was formed by large number of nubbly na…
Using an implicit finite volume method to solve the Navier-Stokes equation,numerical simulation was conducted to study internal flow field of several pin-fin configurations of laminate plates by employing FLUENT software.Turbulence model was Realizable k-e double equation model.Standard wall function was used for near…
A foamless water-based detergent for printing ink was prepared successfully.It is used to clean print mechanism and other inking parts.The experimental showed that there is nothing on the surface of the equipment with badly ink after cleaning by mixed with water in proportion of 1∶30,the rate of cleaning is about 100%…
The effect of honeycomb-like ceramic on the efficiency of ozonation of acetophenone in water was investigated. The results showed that the presence of honeycomb-like ceramic can significantly improve the efficiency of ozonation of acetophenone. Based on a test with added tert-butanol,this catalytic ozonation system ma…
Based on the theory of dislocation dynamics,a physically-based constitutive model is established in which the dynamic stain aging effects are excluded,the flow stress of plastic deformation is resolved into three parts:athermal component,thermally-activated stress,and viscous drag.The mechanical behaviors of the steel…