Materials Literature
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FeSiAlCr powders were prepared by mechanical alloying(MA) with analytical-purity Fe,Si,Al and Cr powders.The morphology and microstructure of as-milled powders were investigated by SEM and XRD respectively.Electromagnetic parameters were measured with a microwave vector network analyzer,and reflectivities of the powde…
Palladium-polyoxometalate was synthesized,and its use as catalyst for C-C formation via C-H bonds functionalization including oxidative coupling of benzene with styrene and oxidative coupling of aryl compound with aryl compound was also examined.From the examination of the catalyst performance,it was found that the ca…
Nanotechnology,as a leading technology,is recently developed after the information and biotechnology.It has been widely applied in the area of cancer diagnosis and treatment.As nanotechnology has a lot of theoretical significance and broad application prospects,this paper reviews and discusses the studies on the nano-…
Taking the induction hardening of several typical machine tool parts as an example,the design and selection of inductors were analyzed,including configuration of induction coils suitable to heating various machine tool parts or the given areas of parts and the heating effectiveness,determination of inductor winding,po…
Structural,optical and electrical properties of tungsten(W) and molybdenum(Mo) co-doped indium oxide(IMWO) films prepared by electron beam deposition technique with different WO3-MoO3 co-doped concentrations are investigated in detail.The IMWO thin films present pyramid-like surface.With the co-doped concentration inc…
Under the same conditions,the magnesium alloy with rare earth was treated by micro arc oxidation,and the influence of the current density on the coating properties including the thickness,hardness,insulation and resistance to corrosion of the coating was researched.The results show that the thickness and hardness of c…
The special color coating on steel sheets or members could be obtained in hot galvanization processing while the bath contains some transitional elements together with the cooling control.Understanding its coloration mechanism from a thermodynamic point of view is helpful for further bath composition optimization due…
A complex,{[Ni4(nic)8(H2O)2]·3H2O}∞,(Hnic=nicotinic acid),has been synthesized through the Ni2+ salt reacting with nicotinamide under hydrothermal conditions and characterized by EA,IR,TG and single crystal x-ray diffraction.Crystal data:monoclinic,space group P2(1) with a=10.7566(8),b=19.5438(15),c=13.7801(10),β=104…
The waterborne acrylic resins for photoresist dry film were synthesized using MMA,BA and AA as main materials.The effects of the initiator content,dropping time of initiator,hydrophilic functional monomer AA content,soft monomer BA content and neutralization degree on the water-solubility and molecular weight of the r…
The two-dimensional motor model was analyzed by means of the finite element simulation software.The influence on the air-gap magnetic density of AC PM Servo motors by the magnetic steel eccentricity,pole embrace and air-gap length was studied and calculated.The reasonable design of the various parameters made it possi…
Sol-gel technology synthesized cordierite material has such positives as low thermal expansion coefficient,low dielectric properties and high chemical stability,so such material can be widely applied in electronic components and low-temperature thermal radiation materials.This paper surveys the influences of technolog…
The effects of heat treatment process on microstructure and mechanical properties of AZ91D and AZ71 magnesium alloy were studied.The results show that in AZ91D and AZ71 magnesium alloy,with the increase of heat treatment temperature,β-phase of the materials both increase first and then decrease,β-phase in the alloys d…
In this paper,elemental crystal furnace,FT-CZ2008 type,made in Ferro Tec group,is research object.The basic structure of CZ elemental crystal furnace is introduced,and the growth techniques of monocrystalline silicon are expounded.Influence factors of carbon and oxygen generating in this system is analyzed from 3 aspe…
The basic principle of negative refractive index in chiral metamaterial is introduced.The structure models of several chiral metamaterials are described.The research advances of the optical activity,circular dichroism and negative refractive index for the chiral metamaterials in microwave region,infrared and visible l…
The extraction of cellulose from beet pulp in Xinjiang beet sugar factory was studied with alkali solution.Various extracting factors influencing the yield of the cellulose product are discussed.The optimal conditions were obtained by orthogonal experiment as follows:10 % of the concentration of NaOH,65℃ of the extrac…
The structural properties of TiN in cubic and hcp phase are studied by first-principles calculation.The calculated E-V curves are used to predict the phase transition of cubic to hcp phase.Additionally,the elastic constants are calculated via the efficient stress-strain method.The present results agree well with exper…
The test methods and susceptibility of explosion composite plate compound layer 06Cr13R low-Cr ferritic stainless steel to intergranular corrosion were studied.The results show that the double-loop EPR method was appropriate for evaluating the susceptibility of 06Cr13R low-Cr ferritic stainless steel to intergranular…
In recent years,there are many bushing faults in the power grid,which have brought heavy loss to the national economy and raised great attention of the power operation and maintenance department's concern,so it is important and urgent to do some research on the inner insulation status of high voltage bushing.This pape…
The steel structures have developed quickly because of their superior advantage.Fire retardant paints attached to the steel structure are also spread widely.The current research situation of fire proofing coatings for steel structure was reviewed,and the development trend and prospect of ultra thin fire proofing coati…
Influence of current annealing on the giant magnetoimpedance(GMI) effect of Co68Fe4.5Si13.5B14 microwires was studied.The result showed that,for annealing current of 30mA,the GMI effect and its magnetic field sensitivity of metal wire increase with extending current annealing time.The maximum GMI ratio of 142.2% and r…