Materials Literature
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The cored wire L1 which is used to manufacture FeCrMoCBSi amorphous coating and the compared cored wire L2 which append Nickel rare earth alloy were developed and the two kinds of amorphous coatings were prepared by arc spraying technology.XRD,SEM,DSC and micro-hardness tester were used to examination the property and…
Progress in the synergistic agents of ammonium polyphosphate(APP) intumescent flame retardant(IFR) system was reviewed.The application of IFR and its synergistic agents in polymer materials was introduced.Four categories of synergistic agents for IFR containing ammonium polyphosphate,such as zeolite,metal oxide and me…
Polypropylene(PP)is one of the rapidest growing materials in the world.For the outstanding performance and huge market demand,the production of high fluidity polypropylene further stimulates the development of polypropylene industry.In this paper,the production situation of high fluidity polypropylene is presented,and…
Steel,aluminum and aluminum alloy were used as substrate,the influence of ionic concentration to the acidity,appearance of phosphating transformation film,copper sulfate drop times of steel parts,sodium hydroxide drop times of aluminum parts were studied,at last the dense,corrosion resistant aluminum and aluminum allo…
At present,the semiconductor chips′ processing is developing toward 22 nm.The most probable method to achieve this size is EUV Lithography.The light emitted from EUV sources is very short(13.5 nm),and most of substances would absorb this radiation strongly,so using the transmission optics to collect the radiation is i…
Organotin(Ⅳ) compound {[(n-C4H9)2Sn(0.5·O2CC12H10N)(0.5·CH3O)]2O}2 was synthesized by the reaction of n-dibutyltin oxide with N-phenylanthranilic acid.The compound was characterized by elemental analysis,IR and 1H NMR analyses.The crystal structure was determined by X-ray single crystal diffraction method.The result i…
Poly(aniline-co-o-toluidine) doped with big molecular dopant acid,camphorsulfonic acid (CSA),was prepared by interfacial polymerization. The component and structure of the polymer were characterized by Fourier transform infrared spectrum(FT-IR) spectra and UV-vis spectra. The electrochemical capacitance performance of…
The effect of quenching-isothermal-tempering(Q-I-T)process on microstructure of 60Si2CrVA spring steel was studied.The volume fraction of retained austenite was measured by XRD and the microstructures of all samples were analyzed by metallurgical microscopy and TEM.The results show that volume fraction of the microstr…
Y1Cr17TiRE high magnetic stainless steel applicable for automobile oil atomizer was made by vacuum melting and electroslag remelting processes.The microstructures and heat treatment processes of Y1Cr17TiRE steel containing respectively Ti,RE and Ti plus RE were investigated.After being treated at temperatures below 42…
Blending was an effective method to improve foamability of polypropylene(PP).Microcellular foams of polypropylene/high-density polyethylene(PP/HDPE) blends were prepared using high-pressure vessel and cellular structures of foams were characterized by scanning electronmicroscope.Experimental results showed that cellul…
This paper introduced the preparation and property of antibacterial ABS.In the process of preparation,the author explored the relation of preparation technology and property of material,the affection of discoloration inhibitor on the material's discoloration.In the end,the result of antibacterial experiment proved tha…
The pipeline steel grade X70 used for Mid-Asia gas transportation project has very stringent requirements on its strength,toughness at low temperature and drop weight tear test(DWTT) values.Therefore phosphorus,sulfur,nitrogen and hydrogen contents in steel should be controlled as low as possible.At the same time low…
Calcium carbonate was prepared by the sodium carbonate with calcium chloride in the prensence of soluble starch,β-cyclodextrin and sodium dodecyl sulfate as the template.The products were analyzed by Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD) and scanning electron microscopy(SEM),respectivel…
Y2O3 and Cr2O3 codoped BiFeO3 ceramics were prepared by solid-state reaction method. The multiferroic properties of Bi0.9Y0.1Fe1–xCrxO3 (BYFCx, x=0, 0.002, 0.004, 0.006, 0.008) ceramics were investigated. XRD analysis results indicate that the solid solutions with rhombohedral perovskite structure are formed when the…
The enzymatic hydrolysis of Apostichopus japonicus alimental tract with papain was carried out for polysaccharide extraction,and the obtained polysaccharides were preliminarily characterized. Three hydrolysis parameters including hydroly-sis time and temperature as well as enzyme amount were optimized. The relative mo…
Micronaire value,the comprehensive index on fineness and maturity of cotton fibers,affects spinning quality of cotton fibers.This study,clustered the series indexes obtained though single bale spinning with different Micronaire values which could affect the yarn quality.The conclusion is that there is the best quality…
An investigation is conducted to study aquatic mycoflora in autumn in Ashihe Valley by the basic methods of mycology and community ecology.A total of 16 species fungi are isolated.There are few species of fungi in Ashihe Valley,and the species identified are common ones.The importance reasons are the identify method a…
High Speed Turning of slender shaft is very difficulting,but it has a certain regularity. The key lies in their processing skills and adjusting the proper use with the lathe turret, to solve the workpiece thermal deformation elongation, a reasonable choice, as well as the geometry of Cutters, the problem will be solve…
Using the perturbation method within the effective mass approximation,the ground-state energies and the first excited-state energies of the electron and the hole in a fixed length rectangular quantum wire are calculated.The deformation potential induced by the difference between the lattice constants of the materials…
Welding rod for the shovel blade facing technical difficulties,in order to reduce the welding deformation and welding quality.In this study,CO2 gas welding,welding technology improved,the use of new welding equipment and welding materials with welding automation.The results showed that CO2 gas shielded welding on the…