Materials Literature
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The continuous cooling transformation(CCT) curve of 25MnVC steel is determined with Formastor-F full-automatic phase transition instrument and the law of its structure transformation at different cooling rates is studied.Through comparing the CCT curve of 25MnVC steel with that of 25MnVK steel,it is found out that the…
Finite element analysis of the steel bar connecting sleeve by using DEFORM-3D,from the appearance 、the stress and damage of the three perspective,that compared the four rough pieces to achieve the goal to optimize the selection ultimately.The results show that the maximum stress of cold heading in the new process redu…
The effect of reactive polyethersulphone on the properties of 6421 bismaleimide resin for RTM were investigated by SEM and mechanical properties tests.The results showed that the impact toughness of the 6421 resin was significantly improved by rPESU.The rPESU formed a continuous phase in 6421BMI resin when rPESU conte…
PbS nanoparticles with different morphologies,such as spherical,cubical,spindle-shaped,shuttle-shaped and rod-like,were prepared in W/O microemulsion solutions containing P-Octyl polyethylene glycol phenylether(OP),n-pentanol,cyclohexane and water.Morphologies of PbS nanoparticles were characterized by transmission el…
Yttrium complex was synthesized with glucose as the organic ligand.Organosilicone hybrid sol containing yttrium complex was synthesized by a hydrolytic polycondensation among silica,methyltriethoxysilane and yttrium complex at room temperature.Organosilicone hybrid sol containing yttrium complex was carried out on com…
Polyolefin has been had an important position in synthetic materials and general polymer materials. The reasons why polyolefin is difficult to be bonded were introduced, and based on this,the pretreatment methods of polyolefin materials and the latest research development of all kinds of adhesive for polyolefin at hom…
The cyclic oxidation and the residual stress within the scale of Ti3AlC2 at 1000 ℃ were studied by XRD and SEM.The XRD results reveal that the scale is consisted by TiO2 and α-Al2O3.Surface morphology show that the flat compact and crack-free scale which are composed of an onuer and discontinuous layer of TiO2,an inne…
Exchange bias effects are widely used on many fields such as magnetic head and magnetic sensors.Study of the phenomena of exchange bias is also deeper.With the more and more in-depth study,many new and potentially applicable experimental phenomena related with exchange bias have been found,for example,the jump phenome…
Li2ZnTi3O8 microwave dielectric ceramics were synthesized by the traditional solid-state reaction method.The effects of main sintering parameters on the phase composition,microstructure and microwave dielectric properties of the prepared ceramics were investigated.The results show that the ceramic prepared by pre-sint…
ZnWO4 powders were synthesized by sol-gel method.Photovoltaic performance of ZnWO4 was studied in the dye-sensitized solar cells(DSSCs).The structure and morphology of the ZnWO4 powders were characterized by X-ray diffraction(XRD) and scanning electron microscope(SEM).The results showed that the crystallization of ZnW…
This paper describes the use of pressed powder pellet sample preparation method,selection of soil,rock,stream sediment and other 43 standard substances through various correction for linear regression.Japan Science production company ZSX Primus type X ray fluorescence spectrometer was used to determine the 6 elements…
Amino modified silicone was prepared by the hydrosilation using N,N-dimethylaminopropylacrylamide and hydrogen silicone oil as materials,chloroplatinic acid-isopropanol as catalyst,and toluene as solvent.The dosage of toluene was 1.5 times of the sum mass of hydrogen silicone oil and N,N-dimethylaminopropylacrylamide,…
The identification methods of tanned leather and fur are presented in this paper,including traditional sensory analysis,FT-IR method and molecular biology methods.Meanwhile,the advantages of various methods and existing problems are analysed.
The sizing is one of the key factors to keep the air-jet loom working with high efficiency.This paper expounds the historic necessity of PVA sizing option by the air jet loom from consideration of the requirement of the air-jet loom on sizing,the structure characteristics of PVA,and the excellent serosa properties.In…
Asymptotic solution is constructed on second-order nonlinear singularly perturbed Robin problem with phenomena of angular layer by the method of boundary functions.Under suitable conditions and by using the theory of differential inequalities to improve the existence of solution,and to obtain the uniform valid asympto…
With aniline and self-made vanadium-titanium acid as raw materials,ITO conductive glass as basal electrode,the vanadium-titanium acid-PANI films modified electrodes is prepared by one-step and two-step methods.The mechanism and electrochemical behavior of the composite films are investigated systematically.The results…
Tungsten carbide(WC) can be used as potential catalysts for various electrocatalyst and chemical reactions.A simply soft-template route to fabricate mesoporous tungsten carbide/carbon(WC/C) composites was prepared by W/O emulsion and triblock copolymer self-assembly strategies,followed by a high-temperature carbotherm…
Spray forming is an advanced metallurgical technology.Its characteristics include near net shape,with simple equipment,small segregation and fine grain.In recent years,scholars have been extensively studying in its application on aluminum alloy,iron-based alloys and composite materials.The technology theory of spray f…
In order to study the influence of alkaline lignin and degradation products of polyurethane foam(DPPUF) on structure and performance of polyurethane foam composites(PUF),the reticulated polyurethane foam composites were prepared by using alkaline lignin and DPPUF as raw materials.The FT-IR results showed that compatib…
The PANI/CNTs composite material was prepared through emulsion polymerization,and then the product had been modified by the induction-coupled oxygen plasma to get the electrode material for super-capacitor.The influences of the modification time on the electrode material surface property and its electrochemical proper…