Materials Literature
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Nanocrystalline Cu-50%Cr composite powders were prepared by high-energy ball milling.Effects of ball milling time and process control agent(PCA) on the grain size,microstructure and morphology of the composite powders were studied using X-ray diffraction(XRD),differential scanning calorimetry(DSC),scanning electron mi…
The process of Mo alloying was performed on the surface of TiNi alloys by double glow plasma surface alloying/metallurgy(DG-PSM) technology,and the cross-section and surface morphology of alloying sample were characterized by means of optical microscopy(OM),glow discharge spectrometer(GDS) and scanning electron micros…
A alkylaryl sulfonate hyperbranched polymer surfactant AAS-HBP with novel structure was synthesized through acyl chlorination and esterification with hyperbranched polymer HBP,dichlorosulfane and sodium m-carboxylbenzenesulfonate as raw materials.The structure of the product was characterized by IR and elemental analy…
The microstructure and properties of micro-arc oxidation(MAO)coatings for AZ31B Mg alloy in silicate electrolyte were investigated under the condition of DC pulsed power supply.XRD analysis showed that the oxidized coatings were composed of MgO and Mg2SiO3.A comparative study of the properties of the coatings under di…
As a kind of excellent magnetic materials,spinel ferrite can be used as microwave absorber,magnetic recording materials and other functional materials in practical application.Meanwhile,it has also good application prospect in catalyst,electronic information and biology technology fields,etc.Due to the greenhouse effe…
Calix [4] arene was synthesized by dealkylation reaction using p-tert-butylcalix [4] arene and phenol as raw material in the presence of anhydrous AlCl3.Then 5,11,17,23-four sulfo phenyl)-azo calix [4] arene was synthesized by coupling reaction using calix [4] arene and p-amino benzene sulfonic acid as raw materials.I…
The phenolic resol resins were modified by different amounts of urea in the synthesis stage.Then the modified resins were prepared to foams.The properties of modified foams were tested.The results showed that,with the increase in the amount of urea,water absorption,toughness and flame retardant property of the foam ro…
In this paper,30 % polyether benzamides spreading oil self-diffusion morphology and spreading speed on the water surface were investigated,and its film thickness and the activity of killing cercariae were evaluated.It was found that 30 % polyether benzamides spreading oil on the water surface can quickly self-diffusio…
Iron matrix composites reinforced with mixed size SiC particles were prepared by a powder metallurgy hot press resistance sintering technology.Investigation has been carried out on effect of mixed size reinforcing particles on the mechanical properties of the composites.It is found that the properties of the composite…
In order to explore the aged SBS modified asphalt recycling feasibility,The TFOT test was carried out.Recycled asphalt was obtained by adding rejuvenation agent.The routine test,fatigue test,TFOT test was carried out to recycled asphalt.The performance comparison between unaged SBS modified asphalt and recycled asphal…
The effects of three curing systems on the anti-reversion characteristics of the shoulder pad compound of tire were investigated.The results showed that,compared with conventional sulfur vulcanization system,the anti-reversion properties of the compounds with semi-efficient and equivalent vulcanization systems were im…
Electrical explosion is a new technology to prepare high purity nanometer powder materials.This technology has many characteristics such as,high efficiency of utilizing energy,convenience of adjusting the process parameters and good versatility.Mechanism for fabrication of nanometer powder materials by electrical expl…
In order to solve the corrosion problem of insulated tubing, the corrosion laws of P110 steel in high temperature CO2/O2 system were studied and the corrosion mitigation effect of imidazoline corrosion inhibitor was evaluated through dynamic coupon test method. The results indicated that temperature, oxygen partial pr…
Based on polyethylene terephthalate(PET) and cationic dyeable polyester(CDP),one-step PET/CDP composite FDY was obtained by spinning and drafting integrated system.Sound velocity method and different scanning calorimetry(DSC) were used to investigate the properties of the yarns.The experimental results showed that whe…
The mechanical properties of low carbon Si-Mn steel after different heat treatment were studied by XRD,impact test and tensile test.The results show that the sample can obtain of the ferrite,bainite and retained and austenite of three-phase organization after heating at 790 ℃,holding 50 min and isothermal holding at 3…
The trapezoid polyphenylsilsesquioxane resin and heat-resistance sticky silicone resin were synthesized.An adhesive was prepared by blending filler,promoter,catalyst and the proportional mixture of the two silicone resins mentioned above.The bonding property between titanium alloy and thermal insulation material with…
Mo-coated graphite fiber/Cu composites were fabricated by vacuum hot-press sintering with milled mesophase pitch-based graphite fibers and Cu powder.The molybdenum coatings on the fibers were obtained via metal organic chemical vapor deposition technique.Microstructure and thermal properties of the composites was exam…
The heating process,initial roll shape design,roll body cooling,rolling schedule and rolling plan were studied,and the 8mm×3800mm thin gauge plate was successfully produced by 4300mm wide and heavy plate mill.Meanwhile,the volume stable production ability was formed.
Silver microspheres with woolen-ball-like surfaces have been prepared by a chemical reduction method using low-molecular weight polyacrylamide( PAM) as the surfactant. The morphology and dispersion of the product were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD) and nitrogen adsorption mea…
Hydrogenated nitrile rubber(HNBR) /organic montmorillonite(OMMT) nano-composites was prepared using melt intercalation preparation.And the amount of organic montmorillonite(OMMT) were 0 phr,5 phr,10 phr,15 phr,20 phr respectively.This paper examines the effect of the OMMT amount on the mechanical properties and ablati…