Materials Literature
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In order to evaluate the asphalt adhesion in a reasonable way,the test principle of surface free energy determined by the contact angle of interface between liquid and solid was analyzed in accordance with the theory of surface physical chemistry.The test method of surface free energy of asphalt based on the digital i…
Mo/REHY catalysts were prepared by isometric impregnation methods and characterized by XRD and NH_3-TPD methods. The hydrodesulfulrization (HDS) performance of the catalysts was evaluated using 0.6wt% dibenzothiophene(DBT)/decane as the model reactant. The results indicated that the crystal phase peak attributable to…
Structure,internal stress,hardness and elastic modulus of Fe/Cu nano-multilayer were investigated by scanning electron microscopy,film stress test and nano-indenting technology.Due to differences in structure and intrinsic properties of iron and copper,there is a tensile stress in Fe/Cu nano-multilayer.With modulating…
The traditional definition of jewelry design is high-end,expensive,so the methods of processing and producing new materials are pool,the occasions to wear these kinds of new jewelry are also fixed.Through mixing the new material,matching the new material jewelry,and simulating the interaction between jewelry and weare…
Since its founding,APRIL(Asia Pacific Resources International Limited) has followed an integrated forestry,pulp and development strategy by plantation for carbon sequestration and rotating harvesting for pulp and paper production.The total investment in SSMYB Phase 1 and Phase 2 for environmental protection was 3.63 b…
By study of brittle fracture reason for the 9SiCr steel shaped welded pipe roll,a new technology of heat treatment about hardening of the roll surface thinner layer and austempering of the sub-surface thicker layer was proposed.The results show that by improvements of quenching heat treatment process,roll microstructu…
Hydroxyl-terminated polydimethylsiloxane (HTPDMS) modified epoxy resin (EP) can introduce Si-O chain structure which is thermal stable and flexible into cured epoxy resin,and improves the comprehensive performance of modified epoxy resin.With using 2-ethyl-4-methylimidazole as the curing agent,adding different mass fr…
Scanning Electron Microscope is a kind of highly sophisticated device with complicated structure.In the process of image formation there are quite a lot of factors affecting the image quality.The paper introduce the method of selecting optimal experimental condition to different sample,such as controlling the gas envi…
Heavy anti-corrosion coatings covered on aluminum alloy substrate and screening evaluation method of antifouling coatings system were discusses,the related surface treatment technology was studied,coating system used for aluminum alloy and related construction process suit for ship were proposed.
Through the research on the dendrite arm spacing of solidification microstructure of continuously cast stainless steel slabs,the relationship between the solidification characteristic parameters and the captured inclusions was discussed.Firstly,the solidification macrostructure and dendrite microstructure of the three…
This paper briefly introduces some common dyeing methods of polyester fiber fabric,and using orthogonal test to ensure the optimal high-temperature dyeing of hollow polyester fiber knit fabric: dye depth 2 %(o.w.f),bath ratio 1∶20,dyeing temperature 130 ℃,dyeing time 60 min,mass concentration of additive 1 g/L.The bur…
Fe-30%Cu(mass fraction) and Sn,Cu powders were used as matrix materials of diamond saw blades with additives of W/Cr/Ni and WC/Cr3C2/Ni,respectively.The diamond saw blades were prepared by compression sintering.The relative density and mechanical properties of the matrix materials and the cutting ability of the diamon…
Mesoporous material for its excellent physical and chemical properties is widely used in adsorption separation,fine chemicals,chemical catalysis,petroleum and chemical industry.In this paper,orthogonal experimental method is adopted to prepare orderly mesoporous SiO2.At Si in the CTAB ratio 0.14,the crystallization ti…
The current situations of the conductive polymer were introduced,and the progress of conductive fillers with metal and carbon were summarized.The conductive mechanisms of the conductive silicone rubber,including the packing amount of carbon black,pressure and temperature affecting the conductive performance of silicon…
Nanocrystalline W-20%Cu(mass fraction) composite powder were fabricated by mechanical alloying(MA).The as-milled composite powder was characterized by XRD and SEM,respectively.The effect of milling time on the phase components,crystallite size,microstrain and morphology of the composites were studied,the mechanism of…
Highly dispersed Ir/SBA-15 catalysts was prepared by one-pot method of mixing the solutions of P123 ,TEOS,HCl and H_2IrCl_6 under acidic condition. All the as-prepared samples were characterized by X-ray diffraction, N_2 adsorption-desorption and transmission electron microscopy. The results showed that Ir/SBA-15 cata…
Gallium Nitride(GaN)-based materials have great advantages,such as direct and large band-gap,high critical field strength and thermal conductivity,high carrier saturation velocity,and high mobility and concentration of two-dimensional electron gas at hetero-junction interface,the advantages determine that the GaN-base…
Niobium foils as basement,Silicalite-2 membrane(MEL)/Nb composites were prepared by conventional in situ hydrothermal synthesis.The composite materials were characterized by XRD and SEM.The effects of synthesis temperature for the growth of zeolite crystals were studied.The results showed that the surface of the niobi…
Unique steady state elimination method is a new method for eliminating resonance in nonlinear system presented recently.The aim of this paper is to analyze the eliminating of ferroresonance in neutral grounding power system with frozen coefficient by this method,and corresponding results are obtained.The conclusion sh…
TiO2/C composites have been prepared by a sol-gel method.The presenc e of macroporous carbon could act as an interesting template.Degradation of met hyl orange results indicated that the TiO2/C was enhanced the photocatalytic act ivity than P25.On the other hand it can be recycle used several times.